./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label38.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem17_label38.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 e22f4e480e00059ce3613278d58ea2e0a6d73a8e3bda2e3d0eda9cb576504b9d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 01:32:54,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 01:32:54,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 01:32:54,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 01:32:54,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 01:32:54,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 01:32:54,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 01:32:54,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 01:32:54,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 01:32:54,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 01:32:54,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 01:32:54,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 01:32:54,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 01:32:54,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 01:32:54,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 01:32:54,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 01:32:54,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 01:32:54,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 01:32:54,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 01:32:54,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 01:32:54,942 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 01:32:54,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 01:32:54,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 01:32:54,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 01:32:54,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 01:32:54,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 01:32:54,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 01:32:54,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 01:32:54,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 01:32:54,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 01:32:54,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 01:32:54,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 01:32:54,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 01:32:54,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 01:32:54,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 01:32:54,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 01:32:54,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 01:32:54,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 01:32:54,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 01:32:54,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 01:32:54,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 01:32:54,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 01:32:54,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 01:32:55,000 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 01:32:55,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 01:32:55,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 01:32:55,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 01:32:55,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 01:32:55,002 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 01:32:55,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 01:32:55,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 01:32:55,003 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 01:32:55,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 01:32:55,004 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 01:32:55,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 01:32:55,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 01:32:55,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 01:32:55,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 01:32:55,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 01:32:55,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 01:32:55,004 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 01:32:55,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 01:32:55,005 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 01:32:55,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 01:32:55,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 01:32:55,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 01:32:55,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 01:32:55,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:32:55,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 01:32:55,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 01:32:55,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 01:32:55,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 01:32:55,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 01:32:55,006 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 01:32:55,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 01:32:55,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 01:32:55,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e22f4e480e00059ce3613278d58ea2e0a6d73a8e3bda2e3d0eda9cb576504b9d [2022-07-12 01:32:55,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 01:32:55,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 01:32:55,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 01:32:55,227 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 01:32:55,228 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 01:32:55,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label38.c [2022-07-12 01:32:55,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32e4fbc2/049b12711aef4d5e986610944de4e1f2/FLAG825c68d07 [2022-07-12 01:32:55,801 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 01:32:55,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c [2022-07-12 01:32:55,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32e4fbc2/049b12711aef4d5e986610944de4e1f2/FLAG825c68d07 [2022-07-12 01:32:56,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e32e4fbc2/049b12711aef4d5e986610944de4e1f2 [2022-07-12 01:32:56,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 01:32:56,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 01:32:56,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 01:32:56,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 01:32:56,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 01:32:56,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:32:56" (1/1) ... [2022-07-12 01:32:56,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1989867c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:56, skipping insertion in model container [2022-07-12 01:32:56,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 01:32:56" (1/1) ... [2022-07-12 01:32:56,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 01:32:56,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 01:32:56,594 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label38.c[7744,7757] [2022-07-12 01:32:56,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:32:56,959 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 01:32:56,982 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/Problem17_label38.c[7744,7757] [2022-07-12 01:32:57,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 01:32:57,167 INFO L208 MainTranslator]: Completed translation [2022-07-12 01:32:57,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57 WrapperNode [2022-07-12 01:32:57,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 01:32:57,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 01:32:57,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 01:32:57,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 01:32:57,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,418 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-07-12 01:32:57,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 01:32:57,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 01:32:57,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 01:32:57,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 01:32:57,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 01:32:57,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 01:32:57,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 01:32:57,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 01:32:57,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (1/1) ... [2022-07-12 01:32:57,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 01:32:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:32:57,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 01:32:57,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 01:32:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 01:32:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 01:32:57,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 01:32:57,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 01:32:57,956 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 01:32:57,958 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 01:33:00,337 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 01:33:00,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 01:33:00,345 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 01:33:00,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:33:00 BoogieIcfgContainer [2022-07-12 01:33:00,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 01:33:00,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 01:33:00,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 01:33:00,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 01:33:00,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 01:32:56" (1/3) ... [2022-07-12 01:33:00,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed682c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:33:00, skipping insertion in model container [2022-07-12 01:33:00,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 01:32:57" (2/3) ... [2022-07-12 01:33:00,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed682c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 01:33:00, skipping insertion in model container [2022-07-12 01:33:00,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 01:33:00" (3/3) ... [2022-07-12 01:33:00,352 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label38.c [2022-07-12 01:33:00,361 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 01:33:00,361 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 01:33:00,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 01:33:00,414 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@6fa6521c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@46792b88 [2022-07-12 01:33:00,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 01:33:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:00,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-12 01:33:00,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:00,429 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] [2022-07-12 01:33:00,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:00,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:00,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1382487458, now seen corresponding path program 1 times [2022-07-12 01:33:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:00,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151843116] [2022-07-12 01:33:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:00,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:00,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:00,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151843116] [2022-07-12 01:33:00,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151843116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:00,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:00,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:00,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581951706] [2022-07-12 01:33:00,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:00,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:00,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:00,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:00,715 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:03,063 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-07-12 01:33:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:03,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-12 01:33:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:03,086 INFO L225 Difference]: With dead ends: 1644 [2022-07-12 01:33:03,086 INFO L226 Difference]: Without dead ends: 977 [2022-07-12 01:33:03,096 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 [2022-07-12 01:33:03,099 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 436 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:03,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 01:33:03,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-07-12 01:33:03,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-07-12 01:33:03,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-07-12 01:33:03,195 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 52 [2022-07-12 01:33:03,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:03,196 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-07-12 01:33:03,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-07-12 01:33:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 01:33:03,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:03,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:33:03,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 01:33:03,205 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:03,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1909224454, now seen corresponding path program 1 times [2022-07-12 01:33:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:03,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693156461] [2022-07-12 01:33:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:03,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:03,341 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:03,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:03,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693156461] [2022-07-12 01:33:03,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693156461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:03,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:03,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:03,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66270221] [2022-07-12 01:33:03,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:03,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:03,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:03,345 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:05,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:05,196 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2022-07-12 01:33:05,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:05,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-07-12 01:33:05,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:05,202 INFO L225 Difference]: With dead ends: 2813 [2022-07-12 01:33:05,202 INFO L226 Difference]: Without dead ends: 1844 [2022-07-12 01:33:05,204 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 [2022-07-12 01:33:05,205 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:05,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 01:33:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-12 01:33:05,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2022-07-12 01:33:05,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:05,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2022-07-12 01:33:05,262 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 119 [2022-07-12 01:33:05,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:05,263 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2022-07-12 01:33:05,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:05,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2022-07-12 01:33:05,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 01:33:05,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:05,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:33:05,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 01:33:05,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:05,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:05,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1054868238, now seen corresponding path program 1 times [2022-07-12 01:33:05,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:05,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163228085] [2022-07-12 01:33:05,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:05,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:05,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:05,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163228085] [2022-07-12 01:33:05,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163228085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:05,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:05,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:05,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303869711] [2022-07-12 01:33:05,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:05,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:05,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:05,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:05,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:05,383 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:07,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:07,170 INFO L93 Difference]: Finished difference Result 4552 states and 6282 transitions. [2022-07-12 01:33:07,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:07,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-07-12 01:33:07,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:07,180 INFO L225 Difference]: With dead ends: 4552 [2022-07-12 01:33:07,181 INFO L226 Difference]: Without dead ends: 2713 [2022-07-12 01:33:07,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:07,187 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 455 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:07,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 01:33:07,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-07-12 01:33:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2022-07-12 01:33:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3003690036900368) internal successors, (3524), 2710 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3524 transitions. [2022-07-12 01:33:07,227 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3524 transitions. Word has length 122 [2022-07-12 01:33:07,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:07,227 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3524 transitions. [2022-07-12 01:33:07,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3524 transitions. [2022-07-12 01:33:07,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-12 01:33:07,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:07,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:07,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 01:33:07,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:07,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:07,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1602165495, now seen corresponding path program 1 times [2022-07-12 01:33:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:07,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000571624] [2022-07-12 01:33:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:07,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-12 01:33:07,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:07,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000571624] [2022-07-12 01:33:07,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000571624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:07,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:07,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:07,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869080412] [2022-07-12 01:33:07,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:07,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:07,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:07,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:07,342 INFO L87 Difference]: Start difference. First operand 2711 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:09,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:09,080 INFO L93 Difference]: Finished difference Result 7984 states and 10361 transitions. [2022-07-12 01:33:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:09,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 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 191 [2022-07-12 01:33:09,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:09,093 INFO L225 Difference]: With dead ends: 7984 [2022-07-12 01:33:09,094 INFO L226 Difference]: Without dead ends: 4421 [2022-07-12 01:33:09,115 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 [2022-07-12 01:33:09,116 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:09,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 01:33:09,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2022-07-12 01:33:09,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3571. [2022-07-12 01:33:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3570 states have (on average 1.1775910364145659) internal successors, (4204), 3570 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4204 transitions. [2022-07-12 01:33:09,189 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4204 transitions. Word has length 191 [2022-07-12 01:33:09,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:09,190 INFO L495 AbstractCegarLoop]: Abstraction has 3571 states and 4204 transitions. [2022-07-12 01:33:09,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:09,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4204 transitions. [2022-07-12 01:33:09,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-12 01:33:09,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:09,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 01:33:09,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:09,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1773567419, now seen corresponding path program 1 times [2022-07-12 01:33:09,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:09,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299630155] [2022-07-12 01:33:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:09,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:09,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:09,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299630155] [2022-07-12 01:33:09,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299630155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:09,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:09,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:09,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257421356] [2022-07-12 01:33:09,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:09,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:09,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:09,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:09,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:09,311 INFO L87 Difference]: Start difference. First operand 3571 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:10,606 INFO L93 Difference]: Finished difference Result 9273 states and 11087 transitions. [2022-07-12 01:33:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:10,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2022-07-12 01:33:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:10,619 INFO L225 Difference]: With dead ends: 9273 [2022-07-12 01:33:10,620 INFO L226 Difference]: Without dead ends: 5704 [2022-07-12 01:33:10,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:10,623 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:10,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 01:33:10,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2022-07-12 01:33:10,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5704. [2022-07-12 01:33:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 1.1595651411537786) internal successors, (6613), 5703 states have internal predecessors, (6613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 6613 transitions. [2022-07-12 01:33:10,696 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 6613 transitions. Word has length 204 [2022-07-12 01:33:10,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:10,697 INFO L495 AbstractCegarLoop]: Abstraction has 5704 states and 6613 transitions. [2022-07-12 01:33:10,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 6613 transitions. [2022-07-12 01:33:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 01:33:10,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:10,699 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 01:33:10,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:10,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1290832576, now seen corresponding path program 1 times [2022-07-12 01:33:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:10,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718890998] [2022-07-12 01:33:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:10,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 01:33:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718890998] [2022-07-12 01:33:10,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718890998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:10,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:10,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:10,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026874974] [2022-07-12 01:33:10,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:10,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:10,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:10,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:10,775 INFO L87 Difference]: Start difference. First operand 5704 states and 6613 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:12,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:12,381 INFO L93 Difference]: Finished difference Result 14376 states and 16776 transitions. [2022-07-12 01:33:12,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:12,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 206 [2022-07-12 01:33:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:12,402 INFO L225 Difference]: With dead ends: 14376 [2022-07-12 01:33:12,403 INFO L226 Difference]: Without dead ends: 8673 [2022-07-12 01:33:12,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:12,410 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 399 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:12,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:33:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2022-07-12 01:33:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 5677. [2022-07-12 01:33:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 1.1578576462297392) internal successors, (6572), 5676 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:12,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 6572 transitions. [2022-07-12 01:33:12,496 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 6572 transitions. Word has length 206 [2022-07-12 01:33:12,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:12,497 INFO L495 AbstractCegarLoop]: Abstraction has 5677 states and 6572 transitions. [2022-07-12 01:33:12,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:12,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 6572 transitions. [2022-07-12 01:33:12,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-07-12 01:33:12,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:12,500 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:12,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 01:33:12,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:12,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:12,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1757001565, now seen corresponding path program 1 times [2022-07-12 01:33:12,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:12,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385180527] [2022-07-12 01:33:12,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:12,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-12 01:33:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:12,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385180527] [2022-07-12 01:33:12,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385180527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:12,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:12,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:12,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080862494] [2022-07-12 01:33:12,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:12,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:12,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:12,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:12,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:12,645 INFO L87 Difference]: Start difference. First operand 5677 states and 6572 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:14,161 INFO L93 Difference]: Finished difference Result 14315 states and 16680 transitions. [2022-07-12 01:33:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:14,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 284 [2022-07-12 01:33:14,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:14,177 INFO L225 Difference]: With dead ends: 14315 [2022-07-12 01:33:14,178 INFO L226 Difference]: Without dead ends: 7790 [2022-07-12 01:33:14,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:14,184 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:14,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 847 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:33:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7790 states. [2022-07-12 01:33:14,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7790 to 7790. [2022-07-12 01:33:14,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7790 states, 7789 states have (on average 1.1186288355372962) internal successors, (8713), 7789 states have internal predecessors, (8713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7790 states to 7790 states and 8713 transitions. [2022-07-12 01:33:14,261 INFO L78 Accepts]: Start accepts. Automaton has 7790 states and 8713 transitions. Word has length 284 [2022-07-12 01:33:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:14,262 INFO L495 AbstractCegarLoop]: Abstraction has 7790 states and 8713 transitions. [2022-07-12 01:33:14,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 7790 states and 8713 transitions. [2022-07-12 01:33:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2022-07-12 01:33:14,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:14,266 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 01:33:14,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 01:33:14,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:14,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash 830822918, now seen corresponding path program 1 times [2022-07-12 01:33:14,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:14,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994710843] [2022-07-12 01:33:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-12 01:33:14,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:14,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994710843] [2022-07-12 01:33:14,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994710843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:14,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:14,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:14,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147219936] [2022-07-12 01:33:14,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:14,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:14,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:14,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:14,401 INFO L87 Difference]: Start difference. First operand 7790 states and 8713 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:15,982 INFO L93 Difference]: Finished difference Result 18559 states and 20913 transitions. [2022-07-12 01:33:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:15,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 324 [2022-07-12 01:33:15,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:16,007 INFO L225 Difference]: With dead ends: 18559 [2022-07-12 01:33:16,007 INFO L226 Difference]: Without dead ends: 10771 [2022-07-12 01:33:16,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:16,012 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 420 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:16,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 402 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:33:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2022-07-12 01:33:16,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9916. [2022-07-12 01:33:16,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9916 states, 9915 states have (on average 1.119415027735754) internal successors, (11099), 9915 states have internal predecessors, (11099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9916 states to 9916 states and 11099 transitions. [2022-07-12 01:33:16,101 INFO L78 Accepts]: Start accepts. Automaton has 9916 states and 11099 transitions. Word has length 324 [2022-07-12 01:33:16,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:16,101 INFO L495 AbstractCegarLoop]: Abstraction has 9916 states and 11099 transitions. [2022-07-12 01:33:16,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:16,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9916 states and 11099 transitions. [2022-07-12 01:33:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-07-12 01:33:16,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:16,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:33:16,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 01:33:16,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:16,109 INFO L85 PathProgramCache]: Analyzing trace with hash -706258024, now seen corresponding path program 1 times [2022-07-12 01:33:16,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:16,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572165661] [2022-07-12 01:33:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:16,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:16,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:16,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572165661] [2022-07-12 01:33:16,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572165661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:16,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:16,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:16,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416857605] [2022-07-12 01:33:16,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:16,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:33:16,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:16,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:33:16,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:33:16,263 INFO L87 Difference]: Start difference. First operand 9916 states and 11099 transitions. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:18,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:18,474 INFO L93 Difference]: Finished difference Result 26239 states and 29414 transitions. [2022-07-12 01:33:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:33:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 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 391 [2022-07-12 01:33:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:18,516 INFO L225 Difference]: With dead ends: 26239 [2022-07-12 01:33:18,516 INFO L226 Difference]: Without dead ends: 15900 [2022-07-12 01:33:18,528 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 [2022-07-12 01:33:18,528 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 624 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 2769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:18,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 209 Invalid, 2769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 01:33:18,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15900 states. [2022-07-12 01:33:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15900 to 15898. [2022-07-12 01:33:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15898 states, 15897 states have (on average 1.1247405170786942) internal successors, (17880), 15897 states have internal predecessors, (17880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15898 states to 15898 states and 17880 transitions. [2022-07-12 01:33:18,729 INFO L78 Accepts]: Start accepts. Automaton has 15898 states and 17880 transitions. Word has length 391 [2022-07-12 01:33:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:18,732 INFO L495 AbstractCegarLoop]: Abstraction has 15898 states and 17880 transitions. [2022-07-12 01:33:18,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 15898 states and 17880 transitions. [2022-07-12 01:33:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2022-07-12 01:33:18,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:18,742 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:33:18,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 01:33:18,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:18,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:18,750 INFO L85 PathProgramCache]: Analyzing trace with hash -244612345, now seen corresponding path program 1 times [2022-07-12 01:33:18,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:18,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202001534] [2022-07-12 01:33:18,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:18,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-12 01:33:18,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:18,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202001534] [2022-07-12 01:33:18,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202001534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:18,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:18,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334284897] [2022-07-12 01:33:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:18,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:18,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:18,869 INFO L87 Difference]: Start difference. First operand 15898 states and 17880 transitions. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:20,283 INFO L93 Difference]: Finished difference Result 44148 states and 49784 transitions. [2022-07-12 01:33:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:20,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 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 425 [2022-07-12 01:33:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:20,322 INFO L225 Difference]: With dead ends: 44148 [2022-07-12 01:33:20,322 INFO L226 Difference]: Without dead ends: 28252 [2022-07-12 01:33:20,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:20,340 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 495 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:20,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 289 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 01:33:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28252 states. [2022-07-12 01:33:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28252 to 26958. [2022-07-12 01:33:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26958 states, 26957 states have (on average 1.120525281003079) internal successors, (30206), 26957 states have internal predecessors, (30206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:20,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26958 states to 26958 states and 30206 transitions. [2022-07-12 01:33:20,702 INFO L78 Accepts]: Start accepts. Automaton has 26958 states and 30206 transitions. Word has length 425 [2022-07-12 01:33:20,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:20,703 INFO L495 AbstractCegarLoop]: Abstraction has 26958 states and 30206 transitions. [2022-07-12 01:33:20,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:20,703 INFO L276 IsEmpty]: Start isEmpty. Operand 26958 states and 30206 transitions. [2022-07-12 01:33:20,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-07-12 01:33:20,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:20,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 01:33:20,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 01:33:20,720 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:20,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash -382818199, now seen corresponding path program 1 times [2022-07-12 01:33:20,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:20,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306299918] [2022-07-12 01:33:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:20,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-12 01:33:20,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:20,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306299918] [2022-07-12 01:33:20,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306299918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:20,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:20,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:20,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172914117] [2022-07-12 01:33:20,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:20,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:20,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:20,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:20,895 INFO L87 Difference]: Start difference. First operand 26958 states and 30206 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:22,488 INFO L93 Difference]: Finished difference Result 64137 states and 71882 transitions. [2022-07-12 01:33:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:22,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 487 [2022-07-12 01:33:22,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:22,530 INFO L225 Difference]: With dead ends: 64137 [2022-07-12 01:33:22,530 INFO L226 Difference]: Without dead ends: 37181 [2022-07-12 01:33:22,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:22,552 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 472 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:22,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 184 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:33:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37181 states. [2022-07-12 01:33:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37181 to 34187. [2022-07-12 01:33:22,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34187 states, 34186 states have (on average 1.1263675188673725) internal successors, (38506), 34186 states have internal predecessors, (38506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34187 states to 34187 states and 38506 transitions. [2022-07-12 01:33:22,958 INFO L78 Accepts]: Start accepts. Automaton has 34187 states and 38506 transitions. Word has length 487 [2022-07-12 01:33:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:22,959 INFO L495 AbstractCegarLoop]: Abstraction has 34187 states and 38506 transitions. [2022-07-12 01:33:22,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 34187 states and 38506 transitions. [2022-07-12 01:33:22,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2022-07-12 01:33:22,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:22,979 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:33:22,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 01:33:22,980 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:22,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:22,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2099809724, now seen corresponding path program 1 times [2022-07-12 01:33:22,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:22,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926921727] [2022-07-12 01:33:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:22,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 367 proven. 82 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-12 01:33:23,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:23,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926921727] [2022-07-12 01:33:23,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926921727] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:23,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390533002] [2022-07-12 01:33:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:23,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:33:23,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:33:23,243 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) [2022-07-12 01:33:23,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 01:33:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:23,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 01:33:23,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:33:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 335 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:24,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:33:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 01:33:24,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390533002] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:24,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 01:33:24,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2022-07-12 01:33:24,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758635148] [2022-07-12 01:33:24,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:24,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 01:33:24,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:24,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 01:33:24,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-12 01:33:24,553 INFO L87 Difference]: Start difference. First operand 34187 states and 38506 transitions. Second operand has 5 states, 5 states have (on average 115.2) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:28,348 INFO L93 Difference]: Finished difference Result 109697 states and 123429 transitions. [2022-07-12 01:33:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 01:33:28,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 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 576 [2022-07-12 01:33:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:28,424 INFO L225 Difference]: With dead ends: 109697 [2022-07-12 01:33:28,424 INFO L226 Difference]: Without dead ends: 72524 [2022-07-12 01:33:28,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1153 GetRequests, 1145 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-12 01:33:28,453 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 1507 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 2772 mSolverCounterSat, 1137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 3909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1137 IncrementalHoareTripleChecker+Valid, 2772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:28,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 198 Invalid, 3909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1137 Valid, 2772 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 01:33:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72524 states. [2022-07-12 01:33:29,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72524 to 59313. [2022-07-12 01:33:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59313 states, 59312 states have (on average 1.1094213649851632) internal successors, (65802), 59312 states have internal predecessors, (65802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59313 states to 59313 states and 65802 transitions. [2022-07-12 01:33:29,347 INFO L78 Accepts]: Start accepts. Automaton has 59313 states and 65802 transitions. Word has length 576 [2022-07-12 01:33:29,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:29,348 INFO L495 AbstractCegarLoop]: Abstraction has 59313 states and 65802 transitions. [2022-07-12 01:33:29,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.2) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 59313 states and 65802 transitions. [2022-07-12 01:33:29,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2022-07-12 01:33:29,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:29,366 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:29,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 01:33:29,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 01:33:29,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:29,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1817960429, now seen corresponding path program 1 times [2022-07-12 01:33:29,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:29,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218043921] [2022-07-12 01:33:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:29,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-07-12 01:33:29,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:29,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218043921] [2022-07-12 01:33:29,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218043921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:29,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:29,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:29,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326637737] [2022-07-12 01:33:29,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:29,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:29,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:29,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:29,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:29,867 INFO L87 Difference]: Start difference. First operand 59313 states and 65802 transitions. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:31,611 INFO L93 Difference]: Finished difference Result 127549 states and 141248 transitions. [2022-07-12 01:33:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:31,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 595 [2022-07-12 01:33:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:31,681 INFO L225 Difference]: With dead ends: 127549 [2022-07-12 01:33:31,682 INFO L226 Difference]: Without dead ends: 63120 [2022-07-12 01:33:31,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:31,722 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 496 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:31,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 713 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:33:31,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63120 states. [2022-07-12 01:33:32,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63120 to 61836. [2022-07-12 01:33:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61836 states, 61835 states have (on average 1.0959165521144982) internal successors, (67766), 61835 states have internal predecessors, (67766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61836 states to 61836 states and 67766 transitions. [2022-07-12 01:33:32,792 INFO L78 Accepts]: Start accepts. Automaton has 61836 states and 67766 transitions. Word has length 595 [2022-07-12 01:33:32,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:32,793 INFO L495 AbstractCegarLoop]: Abstraction has 61836 states and 67766 transitions. [2022-07-12 01:33:32,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand 61836 states and 67766 transitions. [2022-07-12 01:33:32,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2022-07-12 01:33:32,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:32,812 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 01:33:32,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 01:33:32,813 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:32,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1902944485, now seen corresponding path program 1 times [2022-07-12 01:33:32,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:32,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392739049] [2022-07-12 01:33:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:32,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-12 01:33:33,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:33,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392739049] [2022-07-12 01:33:33,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392739049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:33,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:33,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:33,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046960258] [2022-07-12 01:33:33,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:33,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:33,110 INFO L87 Difference]: Start difference. First operand 61836 states and 67766 transitions. Second operand has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:34,565 INFO L93 Difference]: Finished difference Result 123668 states and 135528 transitions. [2022-07-12 01:33:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:34,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 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 619 [2022-07-12 01:33:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:34,634 INFO L225 Difference]: With dead ends: 123668 [2022-07-12 01:33:34,634 INFO L226 Difference]: Without dead ends: 61834 [2022-07-12 01:33:34,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:34,673 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 574 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:34,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 556 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 01:33:34,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61834 states. [2022-07-12 01:33:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61834 to 61834. [2022-07-12 01:33:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61834 states, 61833 states have (on average 1.095741756020248) internal successors, (67753), 61833 states have internal predecessors, (67753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:35,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61834 states to 61834 states and 67753 transitions. [2022-07-12 01:33:35,571 INFO L78 Accepts]: Start accepts. Automaton has 61834 states and 67753 transitions. Word has length 619 [2022-07-12 01:33:35,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:35,572 INFO L495 AbstractCegarLoop]: Abstraction has 61834 states and 67753 transitions. [2022-07-12 01:33:35,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 61834 states and 67753 transitions. [2022-07-12 01:33:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 710 [2022-07-12 01:33:35,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:35,594 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:35,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 01:33:35,594 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:35,595 INFO L85 PathProgramCache]: Analyzing trace with hash 916045869, now seen corresponding path program 1 times [2022-07-12 01:33:35,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:35,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255751014] [2022-07-12 01:33:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:35,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-07-12 01:33:35,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:35,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255751014] [2022-07-12 01:33:35,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255751014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:35,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:35,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964462546] [2022-07-12 01:33:35,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:35,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:35,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:35,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:35,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:35,787 INFO L87 Difference]: Start difference. First operand 61834 states and 67753 transitions. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:37,608 INFO L93 Difference]: Finished difference Result 128772 states and 140948 transitions. [2022-07-12 01:33:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:37,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 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 709 [2022-07-12 01:33:37,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:37,683 INFO L225 Difference]: With dead ends: 128772 [2022-07-12 01:33:37,683 INFO L226 Difference]: Without dead ends: 66940 [2022-07-12 01:33:37,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:37,722 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 443 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:37,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 387 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:33:37,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66940 states. [2022-07-12 01:33:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66940 to 61829. [2022-07-12 01:33:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61829 states, 61828 states have (on average 1.0950054991266094) internal successors, (67702), 61828 states have internal predecessors, (67702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:38,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61829 states to 61829 states and 67702 transitions. [2022-07-12 01:33:38,626 INFO L78 Accepts]: Start accepts. Automaton has 61829 states and 67702 transitions. Word has length 709 [2022-07-12 01:33:38,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:38,626 INFO L495 AbstractCegarLoop]: Abstraction has 61829 states and 67702 transitions. [2022-07-12 01:33:38,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 61829 states and 67702 transitions. [2022-07-12 01:33:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 736 [2022-07-12 01:33:38,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:38,654 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:38,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 01:33:38,655 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:38,656 INFO L85 PathProgramCache]: Analyzing trace with hash -614147379, now seen corresponding path program 1 times [2022-07-12 01:33:38,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:38,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723924823] [2022-07-12 01:33:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 863 backedges. 618 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-12 01:33:39,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:39,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723924823] [2022-07-12 01:33:39,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723924823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:39,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:39,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:33:39,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656908603] [2022-07-12 01:33:39,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:39,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:33:39,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:33:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:33:39,203 INFO L87 Difference]: Start difference. First operand 61829 states and 67702 transitions. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:42,633 INFO L93 Difference]: Finished difference Result 149204 states and 162811 transitions. [2022-07-12 01:33:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:33:42,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 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 735 [2022-07-12 01:33:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:42,758 INFO L225 Difference]: With dead ends: 149204 [2022-07-12 01:33:42,758 INFO L226 Difference]: Without dead ends: 83551 [2022-07-12 01:33:42,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:33:42,821 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 649 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:42,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 207 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 01:33:42,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83551 states. [2022-07-12 01:33:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83551 to 61811. [2022-07-12 01:33:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61811 states, 61810 states have (on average 1.095049344766219) internal successors, (67685), 61810 states have internal predecessors, (67685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61811 states to 61811 states and 67685 transitions. [2022-07-12 01:33:44,026 INFO L78 Accepts]: Start accepts. Automaton has 61811 states and 67685 transitions. Word has length 735 [2022-07-12 01:33:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:44,026 INFO L495 AbstractCegarLoop]: Abstraction has 61811 states and 67685 transitions. [2022-07-12 01:33:44,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 61811 states and 67685 transitions. [2022-07-12 01:33:44,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2022-07-12 01:33:44,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:44,066 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-07-12 01:33:44,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 01:33:44,067 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash -568181373, now seen corresponding path program 1 times [2022-07-12 01:33:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:44,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963780704] [2022-07-12 01:33:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:44,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 912 trivial. 0 not checked. [2022-07-12 01:33:44,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:44,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963780704] [2022-07-12 01:33:44,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963780704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:44,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:44,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:33:44,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810653796] [2022-07-12 01:33:44,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:44,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:44,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:44,338 INFO L87 Difference]: Start difference. First operand 61811 states and 67685 transitions. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:46,228 INFO L93 Difference]: Finished difference Result 124458 states and 135975 transitions. [2022-07-12 01:33:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:46,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 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 786 [2022-07-12 01:33:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:46,310 INFO L225 Difference]: With dead ends: 124458 [2022-07-12 01:33:46,311 INFO L226 Difference]: Without dead ends: 60944 [2022-07-12 01:33:46,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:46,364 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 455 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:46,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 734 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:33:46,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60944 states. [2022-07-12 01:33:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60944 to 59241. [2022-07-12 01:33:47,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59241 states, 59240 states have (on average 1.0825455773126267) internal successors, (64130), 59240 states have internal predecessors, (64130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:47,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59241 states to 59241 states and 64130 transitions. [2022-07-12 01:33:47,376 INFO L78 Accepts]: Start accepts. Automaton has 59241 states and 64130 transitions. Word has length 786 [2022-07-12 01:33:47,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:47,377 INFO L495 AbstractCegarLoop]: Abstraction has 59241 states and 64130 transitions. [2022-07-12 01:33:47,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 59241 states and 64130 transitions. [2022-07-12 01:33:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2022-07-12 01:33:47,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:47,429 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 01:33:47,429 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:47,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1008494551, now seen corresponding path program 1 times [2022-07-12 01:33:47,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:47,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974690845] [2022-07-12 01:33:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:47,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1328 backedges. 1028 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-12 01:33:47,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:47,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974690845] [2022-07-12 01:33:47,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974690845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:47,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:47,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:33:47,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856435142] [2022-07-12 01:33:47,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:47,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:33:47,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:47,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:33:47,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:33:47,783 INFO L87 Difference]: Start difference. First operand 59241 states and 64130 transitions. Second operand has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:49,987 INFO L93 Difference]: Finished difference Result 139797 states and 151339 transitions. [2022-07-12 01:33:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:33:49,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 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 865 [2022-07-12 01:33:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:50,077 INFO L225 Difference]: With dead ends: 139797 [2022-07-12 01:33:50,077 INFO L226 Difference]: Without dead ends: 80558 [2022-07-12 01:33:50,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:33:50,110 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 755 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:50,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 162 Invalid, 2611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 01:33:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80558 states. [2022-07-12 01:33:50,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80558 to 75017. [2022-07-12 01:33:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75017 states, 75016 states have (on average 1.0833688813053215) internal successors, (81270), 75016 states have internal predecessors, (81270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:51,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75017 states to 75017 states and 81270 transitions. [2022-07-12 01:33:51,210 INFO L78 Accepts]: Start accepts. Automaton has 75017 states and 81270 transitions. Word has length 865 [2022-07-12 01:33:51,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:51,210 INFO L495 AbstractCegarLoop]: Abstraction has 75017 states and 81270 transitions. [2022-07-12 01:33:51,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:51,211 INFO L276 IsEmpty]: Start isEmpty. Operand 75017 states and 81270 transitions. [2022-07-12 01:33:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 910 [2022-07-12 01:33:51,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:51,250 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 01:33:51,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 01:33:51,251 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:51,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1743396571, now seen corresponding path program 1 times [2022-07-12 01:33:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:51,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924240834] [2022-07-12 01:33:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:51,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 478 proven. 694 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-12 01:33:51,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:51,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924240834] [2022-07-12 01:33:51,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924240834] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:33:51,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824070940] [2022-07-12 01:33:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:51,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:33:51,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:33:51,553 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) [2022-07-12 01:33:51,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 01:33:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:51,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 01:33:51,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:33:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1299 backedges. 943 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-07-12 01:33:52,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 01:33:52,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824070940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:52,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 01:33:52,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-12 01:33:52,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401416545] [2022-07-12 01:33:52,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:52,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:52,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-12 01:33:52,282 INFO L87 Difference]: Start difference. First operand 75017 states and 81270 transitions. Second operand has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:53,842 INFO L93 Difference]: Finished difference Result 150031 states and 162537 transitions. [2022-07-12 01:33:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 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 909 [2022-07-12 01:33:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:53,924 INFO L225 Difference]: With dead ends: 150031 [2022-07-12 01:33:53,924 INFO L226 Difference]: Without dead ends: 75016 [2022-07-12 01:33:53,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 909 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-12 01:33:53,968 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 218 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:53,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 671 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 01:33:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75016 states. [2022-07-12 01:33:54,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75016 to 72887. [2022-07-12 01:33:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72887 states, 72886 states have (on average 1.0700546058227918) internal successors, (77992), 72886 states have internal predecessors, (77992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:55,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72887 states to 72887 states and 77992 transitions. [2022-07-12 01:33:55,025 INFO L78 Accepts]: Start accepts. Automaton has 72887 states and 77992 transitions. Word has length 909 [2022-07-12 01:33:55,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:55,026 INFO L495 AbstractCegarLoop]: Abstraction has 72887 states and 77992 transitions. [2022-07-12 01:33:55,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:55,026 INFO L276 IsEmpty]: Start isEmpty. Operand 72887 states and 77992 transitions. [2022-07-12 01:33:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2022-07-12 01:33:55,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:55,078 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:55,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 01:33:55,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:33:55,299 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1742905758, now seen corresponding path program 1 times [2022-07-12 01:33:55,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:55,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573130263] [2022-07-12 01:33:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:55,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:55,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1828 backedges. 996 proven. 0 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2022-07-12 01:33:55,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:55,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573130263] [2022-07-12 01:33:55,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573130263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:55,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:55,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 01:33:55,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184245813] [2022-07-12 01:33:55,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:55,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:33:55,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:55,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:33:55,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:33:55,585 INFO L87 Difference]: Start difference. First operand 72887 states and 77992 transitions. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 2 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:33:56,752 INFO L93 Difference]: Finished difference Result 129985 states and 139013 transitions. [2022-07-12 01:33:56,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:33:56,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 2 states have internal predecessors, (442), 0 states have call successors, (0), 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 970 [2022-07-12 01:33:56,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:33:56,817 INFO L225 Difference]: With dead ends: 129985 [2022-07-12 01:33:56,817 INFO L226 Difference]: Without dead ends: 57099 [2022-07-12 01:33:56,846 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 [2022-07-12 01:33:56,848 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 557 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 01:33:56,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 71 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 01:33:56,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57099 states. [2022-07-12 01:33:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57099 to 56246. [2022-07-12 01:33:57,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56246 states, 56245 states have (on average 1.0683260734287492) internal successors, (60088), 56245 states have internal predecessors, (60088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56246 states to 56246 states and 60088 transitions. [2022-07-12 01:33:57,574 INFO L78 Accepts]: Start accepts. Automaton has 56246 states and 60088 transitions. Word has length 970 [2022-07-12 01:33:57,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:33:57,575 INFO L495 AbstractCegarLoop]: Abstraction has 56246 states and 60088 transitions. [2022-07-12 01:33:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 2 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:33:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand 56246 states and 60088 transitions. [2022-07-12 01:33:57,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2022-07-12 01:33:57,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:33:57,628 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:33:57,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 01:33:57,637 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:33:57,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:33:57,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1682092445, now seen corresponding path program 1 times [2022-07-12 01:33:57,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:33:57,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596850031] [2022-07-12 01:33:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:33:57,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:33:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:33:57,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1904 backedges. 1327 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2022-07-12 01:33:57,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:33:57,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596850031] [2022-07-12 01:33:57,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596850031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:33:57,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:33:57,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:33:57,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944928573] [2022-07-12 01:33:57,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:33:57,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:33:57,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:33:57,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:33:57,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:33:57,942 INFO L87 Difference]: Start difference. First operand 56246 states and 60088 transitions. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:00,672 INFO L93 Difference]: Finished difference Result 123552 states and 131989 transitions. [2022-07-12 01:34:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:00,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 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 999 [2022-07-12 01:34:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:00,750 INFO L225 Difference]: With dead ends: 123552 [2022-07-12 01:34:00,750 INFO L226 Difference]: Without dead ends: 67308 [2022-07-12 01:34:00,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:00,786 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 611 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:00,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 288 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 01:34:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67308 states. [2022-07-12 01:34:01,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67308 to 62625. [2022-07-12 01:34:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62625 states, 62624 states have (on average 1.0612864077669903) internal successors, (66462), 62624 states have internal predecessors, (66462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62625 states to 62625 states and 66462 transitions. [2022-07-12 01:34:01,698 INFO L78 Accepts]: Start accepts. Automaton has 62625 states and 66462 transitions. Word has length 999 [2022-07-12 01:34:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:01,699 INFO L495 AbstractCegarLoop]: Abstraction has 62625 states and 66462 transitions. [2022-07-12 01:34:01,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand 62625 states and 66462 transitions. [2022-07-12 01:34:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2022-07-12 01:34:01,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:01,746 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:01,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 01:34:01,747 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1317435272, now seen corresponding path program 1 times [2022-07-12 01:34:01,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:01,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381262962] [2022-07-12 01:34:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:01,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 1278 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-07-12 01:34:02,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:02,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381262962] [2022-07-12 01:34:02,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381262962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:02,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:02,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:34:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101003800] [2022-07-12 01:34:02,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:02,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:02,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:02,243 INFO L87 Difference]: Start difference. First operand 62625 states and 66462 transitions. Second operand has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:04,401 INFO L93 Difference]: Finished difference Result 143959 states and 152424 transitions. [2022-07-12 01:34:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:04,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 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 1072 [2022-07-12 01:34:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:04,481 INFO L225 Difference]: With dead ends: 143959 [2022-07-12 01:34:04,482 INFO L226 Difference]: Without dead ends: 80484 [2022-07-12 01:34:04,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:04,510 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 624 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 2475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:04,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 637 Invalid, 2475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-12 01:34:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80484 states. [2022-07-12 01:34:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80484 to 63472. [2022-07-12 01:34:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63472 states, 63471 states have (on average 1.0570339210032929) internal successors, (67091), 63471 states have internal predecessors, (67091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63472 states to 63472 states and 67091 transitions. [2022-07-12 01:34:05,309 INFO L78 Accepts]: Start accepts. Automaton has 63472 states and 67091 transitions. Word has length 1072 [2022-07-12 01:34:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:05,310 INFO L495 AbstractCegarLoop]: Abstraction has 63472 states and 67091 transitions. [2022-07-12 01:34:05,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:05,310 INFO L276 IsEmpty]: Start isEmpty. Operand 63472 states and 67091 transitions. [2022-07-12 01:34:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1080 [2022-07-12 01:34:05,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:05,348 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 01:34:05,349 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:05,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash -868002975, now seen corresponding path program 1 times [2022-07-12 01:34:05,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:05,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832482821] [2022-07-12 01:34:05,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:05,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 1170 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-07-12 01:34:05,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:05,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832482821] [2022-07-12 01:34:05,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832482821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:05,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:05,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:05,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179357794] [2022-07-12 01:34:05,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:05,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:05,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:05,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:05,646 INFO L87 Difference]: Start difference. First operand 63472 states and 67091 transitions. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:07,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:07,268 INFO L93 Difference]: Finished difference Result 128646 states and 135940 transitions. [2022-07-12 01:34:07,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:07,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 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 1079 [2022-07-12 01:34:07,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:07,341 INFO L225 Difference]: With dead ends: 128646 [2022-07-12 01:34:07,341 INFO L226 Difference]: Without dead ends: 65176 [2022-07-12 01:34:07,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:07,382 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 113 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:07,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 713 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 01:34:07,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65176 states. [2022-07-12 01:34:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65176 to 60921. [2022-07-12 01:34:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60921 states, 60920 states have (on average 1.0572390019697964) internal successors, (64407), 60920 states have internal predecessors, (64407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:08,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60921 states to 60921 states and 64407 transitions. [2022-07-12 01:34:08,224 INFO L78 Accepts]: Start accepts. Automaton has 60921 states and 64407 transitions. Word has length 1079 [2022-07-12 01:34:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:08,224 INFO L495 AbstractCegarLoop]: Abstraction has 60921 states and 64407 transitions. [2022-07-12 01:34:08,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:08,225 INFO L276 IsEmpty]: Start isEmpty. Operand 60921 states and 64407 transitions. [2022-07-12 01:34:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1233 [2022-07-12 01:34:08,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:08,265 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:08,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 01:34:08,266 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:08,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:08,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1536166241, now seen corresponding path program 1 times [2022-07-12 01:34:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:08,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879724021] [2022-07-12 01:34:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:08,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2274 backedges. 1233 proven. 0 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked. [2022-07-12 01:34:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:08,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879724021] [2022-07-12 01:34:08,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879724021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:08,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:08,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666968828] [2022-07-12 01:34:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:08,569 INFO L87 Difference]: Start difference. First operand 60921 states and 64407 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:10,372 INFO L93 Difference]: Finished difference Result 129515 states and 136895 transitions. [2022-07-12 01:34:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 1232 [2022-07-12 01:34:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:10,445 INFO L225 Difference]: With dead ends: 129515 [2022-07-12 01:34:10,445 INFO L226 Difference]: Without dead ends: 68596 [2022-07-12 01:34:10,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:10,489 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 403 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:10,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 224 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 01:34:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68596 states. [2022-07-12 01:34:11,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68596 to 65179. [2022-07-12 01:34:11,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65179 states, 65178 states have (on average 1.056092546564792) internal successors, (68834), 65178 states have internal predecessors, (68834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65179 states to 65179 states and 68834 transitions. [2022-07-12 01:34:11,299 INFO L78 Accepts]: Start accepts. Automaton has 65179 states and 68834 transitions. Word has length 1232 [2022-07-12 01:34:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:11,299 INFO L495 AbstractCegarLoop]: Abstraction has 65179 states and 68834 transitions. [2022-07-12 01:34:11,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:11,299 INFO L276 IsEmpty]: Start isEmpty. Operand 65179 states and 68834 transitions. [2022-07-12 01:34:11,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1297 [2022-07-12 01:34:11,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:11,360 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:11,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 01:34:11,360 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:11,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:11,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2065285073, now seen corresponding path program 1 times [2022-07-12 01:34:11,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:11,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239525179] [2022-07-12 01:34:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:11,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2526 backedges. 2171 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2022-07-12 01:34:11,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:11,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239525179] [2022-07-12 01:34:11,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239525179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:11,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:11,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 01:34:11,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584708089] [2022-07-12 01:34:11,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:11,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 01:34:11,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 01:34:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:34:11,958 INFO L87 Difference]: Start difference. First operand 65179 states and 68834 transitions. Second operand has 5 states, 5 states have (on average 205.2) internal successors, (1026), 5 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:14,527 INFO L93 Difference]: Finished difference Result 157608 states and 166237 transitions. [2022-07-12 01:34:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 01:34:14,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 205.2) internal successors, (1026), 5 states have internal predecessors, (1026), 0 states have call successors, (0), 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 1296 [2022-07-12 01:34:14,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:14,634 INFO L225 Difference]: With dead ends: 157608 [2022-07-12 01:34:14,634 INFO L226 Difference]: Without dead ends: 92431 [2022-07-12 01:34:14,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-12 01:34:14,666 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 1289 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:14,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 134 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 01:34:14,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92431 states. [2022-07-12 01:34:15,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92431 to 84769. [2022-07-12 01:34:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84769 states, 84768 states have (on average 1.0523546621366553) internal successors, (89206), 84768 states have internal predecessors, (89206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84769 states to 84769 states and 89206 transitions. [2022-07-12 01:34:15,637 INFO L78 Accepts]: Start accepts. Automaton has 84769 states and 89206 transitions. Word has length 1296 [2022-07-12 01:34:15,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:15,637 INFO L495 AbstractCegarLoop]: Abstraction has 84769 states and 89206 transitions. [2022-07-12 01:34:15,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 205.2) internal successors, (1026), 5 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 84769 states and 89206 transitions. [2022-07-12 01:34:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1484 [2022-07-12 01:34:15,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:15,704 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:15,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 01:34:15,704 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:15,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1379251184, now seen corresponding path program 1 times [2022-07-12 01:34:15,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:15,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580656089] [2022-07-12 01:34:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 2115 proven. 0 refuted. 0 times theorem prover too weak. 1264 trivial. 0 not checked. [2022-07-12 01:34:16,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:16,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580656089] [2022-07-12 01:34:16,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580656089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:16,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:16,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:34:16,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160118023] [2022-07-12 01:34:16,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:16,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:16,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:16,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:16,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:16,364 INFO L87 Difference]: Start difference. First operand 84769 states and 89206 transitions. Second operand has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:18,365 INFO L93 Difference]: Finished difference Result 176367 states and 185531 transitions. [2022-07-12 01:34:18,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:18,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 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 1483 [2022-07-12 01:34:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:18,460 INFO L225 Difference]: With dead ends: 176367 [2022-07-12 01:34:18,460 INFO L226 Difference]: Without dead ends: 91600 [2022-07-12 01:34:18,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:18,480 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 796 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:18,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 197 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 01:34:18,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91600 states. [2022-07-12 01:34:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91600 to 83065. [2022-07-12 01:34:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83065 states, 83064 states have (on average 1.0495882692863334) internal successors, (87183), 83064 states have internal predecessors, (87183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:19,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83065 states to 83065 states and 87183 transitions. [2022-07-12 01:34:19,601 INFO L78 Accepts]: Start accepts. Automaton has 83065 states and 87183 transitions. Word has length 1483 [2022-07-12 01:34:19,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:19,601 INFO L495 AbstractCegarLoop]: Abstraction has 83065 states and 87183 transitions. [2022-07-12 01:34:19,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:19,602 INFO L276 IsEmpty]: Start isEmpty. Operand 83065 states and 87183 transitions. [2022-07-12 01:34:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1490 [2022-07-12 01:34:19,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:19,668 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:19,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 01:34:19,669 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:19,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash -671001683, now seen corresponding path program 1 times [2022-07-12 01:34:19,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:19,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104141032] [2022-07-12 01:34:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:19,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:20,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3407 backedges. 2137 proven. 0 refuted. 0 times theorem prover too weak. 1270 trivial. 0 not checked. [2022-07-12 01:34:20,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:20,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104141032] [2022-07-12 01:34:20,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104141032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:20,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:20,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 01:34:20,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559914685] [2022-07-12 01:34:20,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:20,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 01:34:20,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:20,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 01:34:20,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:20,051 INFO L87 Difference]: Start difference. First operand 83065 states and 87183 transitions. Second operand has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:22,405 INFO L93 Difference]: Finished difference Result 171250 states and 179646 transitions. [2022-07-12 01:34:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 01:34:22,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 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 1489 [2022-07-12 01:34:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:22,497 INFO L225 Difference]: With dead ends: 171250 [2022-07-12 01:34:22,498 INFO L226 Difference]: Without dead ends: 88187 [2022-07-12 01:34:22,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 01:34:22,546 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 793 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:22,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 622 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 01:34:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88187 states. [2022-07-12 01:34:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88187 to 83065. [2022-07-12 01:34:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83065 states, 83064 states have (on average 1.0494076856399885) internal successors, (87168), 83064 states have internal predecessors, (87168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83065 states to 83065 states and 87168 transitions. [2022-07-12 01:34:23,648 INFO L78 Accepts]: Start accepts. Automaton has 83065 states and 87168 transitions. Word has length 1489 [2022-07-12 01:34:23,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:23,649 INFO L495 AbstractCegarLoop]: Abstraction has 83065 states and 87168 transitions. [2022-07-12 01:34:23,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:23,649 INFO L276 IsEmpty]: Start isEmpty. Operand 83065 states and 87168 transitions. [2022-07-12 01:34:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1492 [2022-07-12 01:34:23,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:23,985 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 01:34:23,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 01:34:23,985 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash 959944597, now seen corresponding path program 1 times [2022-07-12 01:34:23,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:23,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092188058] [2022-07-12 01:34:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:23,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3247 backedges. 1917 proven. 300 refuted. 0 times theorem prover too weak. 1030 trivial. 0 not checked. [2022-07-12 01:34:24,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:24,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092188058] [2022-07-12 01:34:24,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092188058] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 01:34:24,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853165426] [2022-07-12 01:34:24,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:24,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:34:24,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 01:34:24,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 01:34:24,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 01:34:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:25,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 01:34:25,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 01:34:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3247 backedges. 976 proven. 82 refuted. 0 times theorem prover too weak. 2189 trivial. 0 not checked. [2022-07-12 01:34:25,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 01:34:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3247 backedges. 976 proven. 82 refuted. 0 times theorem prover too weak. 2189 trivial. 0 not checked. [2022-07-12 01:34:26,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853165426] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 01:34:26,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 01:34:26,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-07-12 01:34:26,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299487364] [2022-07-12 01:34:26,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 01:34:26,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 01:34:26,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 01:34:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-12 01:34:26,209 INFO L87 Difference]: Start difference. First operand 83065 states and 87168 transitions. Second operand has 10 states, 10 states have (on average 157.6) internal successors, (1576), 9 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:32,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:32,801 INFO L93 Difference]: Finished difference Result 184974 states and 193849 transitions. [2022-07-12 01:34:32,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 01:34:32,801 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 157.6) internal successors, (1576), 9 states have internal predecessors, (1576), 0 states have call successors, (0), 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 1491 [2022-07-12 01:34:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:32,925 INFO L225 Difference]: With dead ends: 184974 [2022-07-12 01:34:32,925 INFO L226 Difference]: Without dead ends: 101911 [2022-07-12 01:34:32,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3002 GetRequests, 2977 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2022-07-12 01:34:32,979 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 6382 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 7655 mSolverCounterSat, 2326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6382 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 9981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2326 IncrementalHoareTripleChecker+Valid, 7655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:32,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6382 Valid, 270 Invalid, 9981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2326 Valid, 7655 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-12 01:34:33,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101911 states. [2022-07-12 01:34:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101911 to 88184. [2022-07-12 01:34:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88184 states, 88183 states have (on average 1.046437521971355) internal successors, (92278), 88183 states have internal predecessors, (92278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:33,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88184 states to 88184 states and 92278 transitions. [2022-07-12 01:34:33,965 INFO L78 Accepts]: Start accepts. Automaton has 88184 states and 92278 transitions. Word has length 1491 [2022-07-12 01:34:33,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 01:34:33,965 INFO L495 AbstractCegarLoop]: Abstraction has 88184 states and 92278 transitions. [2022-07-12 01:34:33,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 157.6) internal successors, (1576), 9 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:33,965 INFO L276 IsEmpty]: Start isEmpty. Operand 88184 states and 92278 transitions. [2022-07-12 01:34:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1825 [2022-07-12 01:34:34,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 01:34:34,046 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 01:34:34,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 01:34:34,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 01:34:34,266 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 01:34:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 01:34:34,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1674165229, now seen corresponding path program 1 times [2022-07-12 01:34:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 01:34:34,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369691403] [2022-07-12 01:34:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 01:34:34,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 01:34:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 01:34:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5207 backedges. 2927 proven. 0 refuted. 0 times theorem prover too weak. 2280 trivial. 0 not checked. [2022-07-12 01:34:34,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 01:34:34,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369691403] [2022-07-12 01:34:34,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369691403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 01:34:34,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 01:34:34,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 01:34:34,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299755989] [2022-07-12 01:34:34,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 01:34:34,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 01:34:34,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 01:34:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 01:34:34,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:34,750 INFO L87 Difference]: Start difference. First operand 88184 states and 92278 transitions. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 01:34:36,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 01:34:36,425 INFO L93 Difference]: Finished difference Result 178923 states and 187238 transitions. [2022-07-12 01:34:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 01:34:36,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 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 1824 [2022-07-12 01:34:36,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 01:34:36,517 INFO L225 Difference]: With dead ends: 178923 [2022-07-12 01:34:36,517 INFO L226 Difference]: Without dead ends: 90741 [2022-07-12 01:34:36,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 01:34:36,568 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 426 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 01:34:36,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 158 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 01:34:36,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90741 states.