./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem18_label36.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/Problem18_label36.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 ff7b66f39bf13c274f6666e6cfc3b11f3c040d17457aff74de240209d6835c4a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 12:49:17,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 12:49:17,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 12:49:17,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 12:49:17,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 12:49:17,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 12:49:17,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 12:49:17,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 12:49:17,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 12:49:17,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 12:49:17,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 12:49:17,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 12:49:17,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 12:49:17,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 12:49:17,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 12:49:17,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 12:49:17,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 12:49:17,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 12:49:17,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 12:49:17,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 12:49:17,666 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 12:49:17,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 12:49:17,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 12:49:17,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 12:49:17,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 12:49:17,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 12:49:17,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 12:49:17,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 12:49:17,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 12:49:17,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 12:49:17,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 12:49:17,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 12:49:17,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 12:49:17,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 12:49:17,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 12:49:17,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 12:49:17,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 12:49:17,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 12:49:17,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 12:49:17,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 12:49:17,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 12:49:17,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 12:49:17,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 12:49:17,715 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 12:49:17,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 12:49:17,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 12:49:17,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 12:49:17,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 12:49:17,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 12:49:17,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 12:49:17,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 12:49:17,718 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 12:49:17,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 12:49:17,719 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 12:49:17,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 12:49:17,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 12:49:17,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 12:49:17,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 12:49:17,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 12:49:17,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 12:49:17,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 12:49:17,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 12:49:17,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 12:49:17,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 12:49:17,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 12:49:17,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 12:49:17,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 12:49:17,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:49:17,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 12:49:17,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 12:49:17,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 12:49:17,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 12:49:17,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 12:49:17,723 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 12:49:17,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 12:49:17,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 12:49:17,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff7b66f39bf13c274f6666e6cfc3b11f3c040d17457aff74de240209d6835c4a [2022-07-19 12:49:17,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 12:49:17,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 12:49:17,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 12:49:17,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 12:49:17,973 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 12:49:17,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label36.c [2022-07-19 12:49:18,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d213452b7/38f9f91f1bb2479290553514720ce8b6/FLAG76360518c [2022-07-19 12:49:18,611 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 12:49:18,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label36.c [2022-07-19 12:49:18,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d213452b7/38f9f91f1bb2479290553514720ce8b6/FLAG76360518c [2022-07-19 12:49:18,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d213452b7/38f9f91f1bb2479290553514720ce8b6 [2022-07-19 12:49:18,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 12:49:18,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 12:49:18,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 12:49:18,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 12:49:18,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 12:49:18,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:49:18" (1/1) ... [2022-07-19 12:49:18,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116d7f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:18, skipping insertion in model container [2022-07-19 12:49:18,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:49:18" (1/1) ... [2022-07-19 12:49:18,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 12:49:18,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 12:49:19,064 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/Problem18_label36.c[3084,3097] [2022-07-19 12:49:19,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:49:19,680 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 12:49:19,707 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/Problem18_label36.c[3084,3097] [2022-07-19 12:49:20,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:49:20,066 INFO L208 MainTranslator]: Completed translation [2022-07-19 12:49:20,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20 WrapperNode [2022-07-19 12:49:20,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 12:49:20,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 12:49:20,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 12:49:20,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 12:49:20,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,275 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-07-19 12:49:20,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 12:49:20,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 12:49:20,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 12:49:20,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 12:49:20,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 12:49:20,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 12:49:20,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 12:49:20,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 12:49:20,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (1/1) ... [2022-07-19 12:49:20,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:49:20,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:49:20,540 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) [2022-07-19 12:49:20,564 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 [2022-07-19 12:49:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 12:49:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 12:49:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 12:49:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 12:49:20,647 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 12:49:20,649 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 12:49:23,235 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 12:49:23,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 12:49:23,249 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 12:49:23,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:49:23 BoogieIcfgContainer [2022-07-19 12:49:23,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 12:49:23,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 12:49:23,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 12:49:23,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 12:49:23,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 12:49:18" (1/3) ... [2022-07-19 12:49:23,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274ce98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:49:23, skipping insertion in model container [2022-07-19 12:49:23,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:49:20" (2/3) ... [2022-07-19 12:49:23,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274ce98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:49:23, skipping insertion in model container [2022-07-19 12:49:23,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:49:23" (3/3) ... [2022-07-19 12:49:23,259 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label36.c [2022-07-19 12:49:23,271 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 12:49:23,271 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 12:49:23,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 12:49:23,331 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@5d110101, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6ea7eaba [2022-07-19 12:49:23,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 12:49:23,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:23,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-19 12:49:23,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:23,345 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] [2022-07-19 12:49:23,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:23,350 INFO L85 PathProgramCache]: Analyzing trace with hash -438767135, now seen corresponding path program 1 times [2022-07-19 12:49:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016150217] [2022-07-19 12:49:23,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:23,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:49:23,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:23,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016150217] [2022-07-19 12:49:23,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016150217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:23,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:23,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:49:23,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113024816] [2022-07-19 12:49:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:23,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:49:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:23,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:49:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:49:23,586 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 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 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:26,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:26,576 INFO L93 Difference]: Finished difference Result 2221 states and 4282 transitions. [2022-07-19 12:49:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:49:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-07-19 12:49:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:26,595 INFO L225 Difference]: With dead ends: 2221 [2022-07-19 12:49:26,595 INFO L226 Difference]: Without dead ends: 1384 [2022-07-19 12:49:26,601 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 [2022-07-19 12:49:26,604 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 768 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:26,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 487 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 12:49:26,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-07-19 12:49:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-07-19 12:49:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.5994215473608098) internal successors, (2212), 1383 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2212 transitions. [2022-07-19 12:49:26,686 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2212 transitions. Word has length 27 [2022-07-19 12:49:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:26,687 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2212 transitions. [2022-07-19 12:49:26,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:26,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2212 transitions. [2022-07-19 12:49:26,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 12:49:26,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:26,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:49:26,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 12:49:26,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:26,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash 656826546, now seen corresponding path program 1 times [2022-07-19 12:49:26,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:26,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738617902] [2022-07-19 12:49:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:26,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:49:26,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:26,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738617902] [2022-07-19 12:49:26,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738617902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:26,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:26,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:49:26,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114570179] [2022-07-19 12:49:26,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:26,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:49:26,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:26,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:49:26,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:49:26,801 INFO L87 Difference]: Start difference. First operand 1384 states and 2212 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:29,262 INFO L93 Difference]: Finished difference Result 4146 states and 6631 transitions. [2022-07-19 12:49:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:49:29,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-07-19 12:49:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:29,273 INFO L225 Difference]: With dead ends: 4146 [2022-07-19 12:49:29,273 INFO L226 Difference]: Without dead ends: 2764 [2022-07-19 12:49:29,276 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 [2022-07-19 12:49:29,277 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 714 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:29,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 529 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:49:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-07-19 12:49:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-07-19 12:49:29,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.3503438291711907) internal successors, (3731), 2763 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3731 transitions. [2022-07-19 12:49:29,329 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3731 transitions. Word has length 92 [2022-07-19 12:49:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:29,330 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 3731 transitions. [2022-07-19 12:49:29,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3731 transitions. [2022-07-19 12:49:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-19 12:49:29,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:29,336 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:49:29,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 12:49:29,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:29,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash -48078534, now seen corresponding path program 1 times [2022-07-19 12:49:29,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:29,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531024957] [2022-07-19 12:49:29,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:29,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 12:49:29,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:29,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531024957] [2022-07-19 12:49:29,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531024957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:29,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:29,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:49:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501956825] [2022-07-19 12:49:29,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:29,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:49:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:49:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:49:29,535 INFO L87 Difference]: Start difference. First operand 2764 states and 3731 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:32,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:32,934 INFO L93 Difference]: Finished difference Result 7596 states and 9794 transitions. [2022-07-19 12:49:32,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:49:32,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 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 210 [2022-07-19 12:49:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:32,954 INFO L225 Difference]: With dead ends: 7596 [2022-07-19 12:49:32,955 INFO L226 Difference]: Without dead ends: 4834 [2022-07-19 12:49:32,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:49:32,964 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1872 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:32,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 641 Invalid, 4466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 12:49:32,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-07-19 12:49:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 4144. [2022-07-19 12:49:33,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 4143 states have (on average 1.2698527636978034) internal successors, (5261), 4143 states have internal predecessors, (5261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5261 transitions. [2022-07-19 12:49:33,041 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5261 transitions. Word has length 210 [2022-07-19 12:49:33,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:33,042 INFO L495 AbstractCegarLoop]: Abstraction has 4144 states and 5261 transitions. [2022-07-19 12:49:33,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5261 transitions. [2022-07-19 12:49:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-19 12:49:33,049 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:33,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:49:33,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 12:49:33,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1493708540, now seen corresponding path program 1 times [2022-07-19 12:49:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:33,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275631008] [2022-07-19 12:49:33,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:33,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 12:49:33,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:33,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275631008] [2022-07-19 12:49:33,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275631008] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:49:33,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962395466] [2022-07-19 12:49:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:33,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:49:33,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:49:33,367 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) [2022-07-19 12:49:33,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 12:49:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:33,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:49:33,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:49:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 12:49:33,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:49:33,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962395466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:33,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:49:33,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-19 12:49:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585221821] [2022-07-19 12:49:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:33,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:49:33,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:49:33,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:49:33,967 INFO L87 Difference]: Start difference. First operand 4144 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:36,188 INFO L93 Difference]: Finished difference Result 12426 states and 15778 transitions. [2022-07-19 12:49:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:49:36,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2022-07-19 12:49:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:36,214 INFO L225 Difference]: With dead ends: 12426 [2022-07-19 12:49:36,214 INFO L226 Difference]: Without dead ends: 8284 [2022-07-19 12:49:36,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:49:36,221 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 398 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 457 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:36,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 550 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [457 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:49:36,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-07-19 12:49:36,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 6904. [2022-07-19 12:49:36,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.2358394900767782) internal successors, (8531), 6903 states have internal predecessors, (8531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 8531 transitions. [2022-07-19 12:49:36,343 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 8531 transitions. Word has length 326 [2022-07-19 12:49:36,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:36,344 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 8531 transitions. [2022-07-19 12:49:36,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 2 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 8531 transitions. [2022-07-19 12:49:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-07-19 12:49:36,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:36,350 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:49:36,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 12:49:36,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:49:36,572 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash 970048492, now seen corresponding path program 1 times [2022-07-19 12:49:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:36,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978001737] [2022-07-19 12:49:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 12:49:36,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:36,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978001737] [2022-07-19 12:49:36,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978001737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:36,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:36,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:49:36,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139578293] [2022-07-19 12:49:36,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:36,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:49:36,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:36,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:49:36,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:49:36,759 INFO L87 Difference]: Start difference. First operand 6904 states and 8531 transitions. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:39,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:39,134 INFO L93 Difference]: Finished difference Result 15239 states and 18535 transitions. [2022-07-19 12:49:39,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:49:39,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 396 [2022-07-19 12:49:39,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:39,158 INFO L225 Difference]: With dead ends: 15239 [2022-07-19 12:49:39,159 INFO L226 Difference]: Without dead ends: 8284 [2022-07-19 12:49:39,168 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 [2022-07-19 12:49:39,169 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 515 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:39,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 640 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:49:39,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8284 states. [2022-07-19 12:49:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8284 to 8284. [2022-07-19 12:49:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8284 states, 8283 states have (on average 1.154291923216226) internal successors, (9561), 8283 states have internal predecessors, (9561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8284 states to 8284 states and 9561 transitions. [2022-07-19 12:49:39,300 INFO L78 Accepts]: Start accepts. Automaton has 8284 states and 9561 transitions. Word has length 396 [2022-07-19 12:49:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:39,301 INFO L495 AbstractCegarLoop]: Abstraction has 8284 states and 9561 transitions. [2022-07-19 12:49:39,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 8284 states and 9561 transitions. [2022-07-19 12:49:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-07-19 12:49:39,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:39,307 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:49:39,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 12:49:39,308 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:39,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash 668572265, now seen corresponding path program 1 times [2022-07-19 12:49:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:39,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575404329] [2022-07-19 12:49:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:39,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 12:49:39,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:39,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575404329] [2022-07-19 12:49:39,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575404329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:39,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:39,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:49:39,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345235006] [2022-07-19 12:49:39,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:39,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:49:39,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:49:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:49:39,517 INFO L87 Difference]: Start difference. First operand 8284 states and 9561 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:41,218 INFO L93 Difference]: Finished difference Result 20016 states and 22949 transitions. [2022-07-19 12:49:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:49:41,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 states have internal predecessors, (328), 0 states have call successors, (0), 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 411 [2022-07-19 12:49:41,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:41,247 INFO L225 Difference]: With dead ends: 20016 [2022-07-19 12:49:41,248 INFO L226 Difference]: Without dead ends: 11734 [2022-07-19 12:49:41,257 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 [2022-07-19 12:49:41,258 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 466 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:41,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 77 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1791 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:49:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11734 states. [2022-07-19 12:49:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11734 to 11734. [2022-07-19 12:49:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11734 states, 11733 states have (on average 1.119151112247507) internal successors, (13131), 11733 states have internal predecessors, (13131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11734 states to 11734 states and 13131 transitions. [2022-07-19 12:49:41,480 INFO L78 Accepts]: Start accepts. Automaton has 11734 states and 13131 transitions. Word has length 411 [2022-07-19 12:49:41,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:41,481 INFO L495 AbstractCegarLoop]: Abstraction has 11734 states and 13131 transitions. [2022-07-19 12:49:41,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 2 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 11734 states and 13131 transitions. [2022-07-19 12:49:41,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-07-19 12:49:41,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:41,488 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:49:41,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 12:49:41,489 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:41,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:41,489 INFO L85 PathProgramCache]: Analyzing trace with hash 955485949, now seen corresponding path program 1 times [2022-07-19 12:49:41,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:41,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832962533] [2022-07-19 12:49:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:49:41,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:41,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832962533] [2022-07-19 12:49:41,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832962533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:41,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:41,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:49:41,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943427305] [2022-07-19 12:49:41,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:41,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:49:41,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:49:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:49:41,706 INFO L87 Difference]: Start difference. First operand 11734 states and 13131 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:43,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:43,639 INFO L93 Difference]: Finished difference Result 32436 states and 36566 transitions. [2022-07-19 12:49:43,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:49:43,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 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 419 [2022-07-19 12:49:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:43,668 INFO L225 Difference]: With dead ends: 32436 [2022-07-19 12:49:43,668 INFO L226 Difference]: Without dead ends: 20704 [2022-07-19 12:49:43,677 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 [2022-07-19 12:49:43,678 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 601 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:43,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 978 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 12:49:43,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20704 states. [2022-07-19 12:49:43,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20704 to 20704. [2022-07-19 12:49:43,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20704 states, 20703 states have (on average 1.0932232043665169) internal successors, (22633), 20703 states have internal predecessors, (22633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20704 states to 20704 states and 22633 transitions. [2022-07-19 12:49:43,905 INFO L78 Accepts]: Start accepts. Automaton has 20704 states and 22633 transitions. Word has length 419 [2022-07-19 12:49:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:43,905 INFO L495 AbstractCegarLoop]: Abstraction has 20704 states and 22633 transitions. [2022-07-19 12:49:43,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 20704 states and 22633 transitions. [2022-07-19 12:49:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2022-07-19 12:49:43,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:43,909 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:49:43,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 12:49:43,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:43,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1102664492, now seen corresponding path program 1 times [2022-07-19 12:49:43,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:43,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831919318] [2022-07-19 12:49:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:44,051 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-19 12:49:44,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:44,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831919318] [2022-07-19 12:49:44,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831919318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:44,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:44,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:49:44,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101230249] [2022-07-19 12:49:44,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:44,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:49:44,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:44,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:49:44,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:49:44,054 INFO L87 Difference]: Start difference. First operand 20704 states and 22633 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:46,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:46,110 INFO L93 Difference]: Finished difference Result 48306 states and 53266 transitions. [2022-07-19 12:49:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:49:46,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 426 [2022-07-19 12:49:46,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:46,168 INFO L225 Difference]: With dead ends: 48306 [2022-07-19 12:49:46,168 INFO L226 Difference]: Without dead ends: 27604 [2022-07-19 12:49:46,189 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 [2022-07-19 12:49:46,190 INFO L413 NwaCegarLoop]: 1111 mSDtfsCounter, 673 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:46,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1118 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 12:49:46,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27604 states. [2022-07-19 12:49:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27604 to 26914. [2022-07-19 12:49:46,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26914 states, 26913 states have (on average 1.0879129045442724) internal successors, (29279), 26913 states have internal predecessors, (29279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26914 states to 26914 states and 29279 transitions. [2022-07-19 12:49:46,612 INFO L78 Accepts]: Start accepts. Automaton has 26914 states and 29279 transitions. Word has length 426 [2022-07-19 12:49:46,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:46,613 INFO L495 AbstractCegarLoop]: Abstraction has 26914 states and 29279 transitions. [2022-07-19 12:49:46,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 26914 states and 29279 transitions. [2022-07-19 12:49:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-07-19 12:49:46,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:46,617 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:49:46,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 12:49:46,618 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:46,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:46,618 INFO L85 PathProgramCache]: Analyzing trace with hash 583770597, now seen corresponding path program 1 times [2022-07-19 12:49:46,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:46,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830944450] [2022-07-19 12:49:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:46,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-19 12:49:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:46,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830944450] [2022-07-19 12:49:46,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830944450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:46,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:46,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:49:46,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720749707] [2022-07-19 12:49:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:46,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:49:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:49:46,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:49:46,824 INFO L87 Difference]: Start difference. First operand 26914 states and 29279 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:48,746 INFO L93 Difference]: Finished difference Result 53826 states and 58556 transitions. [2022-07-19 12:49:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:49:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 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 451 [2022-07-19 12:49:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:48,796 INFO L225 Difference]: With dead ends: 53826 [2022-07-19 12:49:48,796 INFO L226 Difference]: Without dead ends: 26914 [2022-07-19 12:49:48,820 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 [2022-07-19 12:49:48,821 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 770 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 2165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:48,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 780 Invalid, 2165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1974 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 12:49:48,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26914 states. [2022-07-19 12:49:49,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26914 to 26914. [2022-07-19 12:49:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26914 states, 26913 states have (on average 1.0729758852599116) internal successors, (28877), 26913 states have internal predecessors, (28877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26914 states to 26914 states and 28877 transitions. [2022-07-19 12:49:49,172 INFO L78 Accepts]: Start accepts. Automaton has 26914 states and 28877 transitions. Word has length 451 [2022-07-19 12:49:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:49,174 INFO L495 AbstractCegarLoop]: Abstraction has 26914 states and 28877 transitions. [2022-07-19 12:49:49,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 26914 states and 28877 transitions. [2022-07-19 12:49:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-07-19 12:49:49,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:49,183 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-19 12:49:49,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 12:49:49,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:49,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:49,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1920500006, now seen corresponding path program 1 times [2022-07-19 12:49:49,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:49,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870025797] [2022-07-19 12:49:49,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:49,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 559 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-07-19 12:49:49,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:49,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870025797] [2022-07-19 12:49:49,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870025797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:49,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:49,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:49:49,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646648674] [2022-07-19 12:49:49,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:49,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:49:49,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:49,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:49:49,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:49:49,551 INFO L87 Difference]: Start difference. First operand 26914 states and 28877 transitions. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:51,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:51,745 INFO L93 Difference]: Finished difference Result 60726 states and 65683 transitions. [2022-07-19 12:49:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:49:51,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 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 569 [2022-07-19 12:49:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:51,801 INFO L225 Difference]: With dead ends: 60726 [2022-07-19 12:49:51,801 INFO L226 Difference]: Without dead ends: 32434 [2022-07-19 12:49:51,812 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 [2022-07-19 12:49:51,813 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 610 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:51,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1096 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1870 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 12:49:51,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32434 states. [2022-07-19 12:49:52,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32434 to 31744. [2022-07-19 12:49:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31744 states, 31743 states have (on average 1.0704092240808998) internal successors, (33978), 31743 states have internal predecessors, (33978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31744 states to 31744 states and 33978 transitions. [2022-07-19 12:49:52,170 INFO L78 Accepts]: Start accepts. Automaton has 31744 states and 33978 transitions. Word has length 569 [2022-07-19 12:49:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:52,170 INFO L495 AbstractCegarLoop]: Abstraction has 31744 states and 33978 transitions. [2022-07-19 12:49:52,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 31744 states and 33978 transitions. [2022-07-19 12:49:52,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-07-19 12:49:52,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:52,195 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:49:52,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 12:49:52,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:52,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1427364680, now seen corresponding path program 1 times [2022-07-19 12:49:52,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:52,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027286109] [2022-07-19 12:49:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:52,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-19 12:49:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:52,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027286109] [2022-07-19 12:49:52,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027286109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:52,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:52,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 12:49:52,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031809210] [2022-07-19 12:49:52,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:52,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 12:49:52,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:52,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 12:49:52,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:49:52,467 INFO L87 Difference]: Start difference. First operand 31744 states and 33978 transitions. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:55,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:55,034 INFO L93 Difference]: Finished difference Result 71238 states and 76745 transitions. [2022-07-19 12:49:55,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:49:55,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 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 605 [2022-07-19 12:49:55,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:55,082 INFO L225 Difference]: With dead ends: 71238 [2022-07-19 12:49:55,082 INFO L226 Difference]: Without dead ends: 35356 [2022-07-19 12:49:55,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:49:55,106 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 2091 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 1190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1190 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:55,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 1074 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1190 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:49:55,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35356 states. [2022-07-19 12:49:55,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35356 to 32434. [2022-07-19 12:49:55,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32434 states, 32433 states have (on average 1.0441525606635218) internal successors, (33865), 32433 states have internal predecessors, (33865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32434 states to 32434 states and 33865 transitions. [2022-07-19 12:49:55,491 INFO L78 Accepts]: Start accepts. Automaton has 32434 states and 33865 transitions. Word has length 605 [2022-07-19 12:49:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:55,491 INFO L495 AbstractCegarLoop]: Abstraction has 32434 states and 33865 transitions. [2022-07-19 12:49:55,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 32434 states and 33865 transitions. [2022-07-19 12:49:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2022-07-19 12:49:55,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:55,504 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:49:55,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 12:49:55,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:55,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1730127117, now seen corresponding path program 1 times [2022-07-19 12:49:55,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:55,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945514988] [2022-07-19 12:49:55,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:55,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 631 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-19 12:49:55,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:55,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945514988] [2022-07-19 12:49:55,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945514988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:55,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:49:55,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:49:55,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217197656] [2022-07-19 12:49:55,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:55,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:49:55,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:55,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:49:55,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:49:55,772 INFO L87 Difference]: Start difference. First operand 32434 states and 33865 transitions. Second operand has 4 states, 4 states have (on average 152.25) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:49:58,167 INFO L93 Difference]: Finished difference Result 73146 states and 76603 transitions. [2022-07-19 12:49:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:49:58,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 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 716 [2022-07-19 12:49:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:49:58,206 INFO L225 Difference]: With dead ends: 73146 [2022-07-19 12:49:58,207 INFO L226 Difference]: Without dead ends: 40024 [2022-07-19 12:49:58,228 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 [2022-07-19 12:49:58,228 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 997 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:49:58,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [997 Valid, 99 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 12:49:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40024 states. [2022-07-19 12:49:58,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40024 to 38644. [2022-07-19 12:49:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38644 states, 38643 states have (on average 1.0427761819734493) internal successors, (40296), 38643 states have internal predecessors, (40296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:58,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38644 states to 38644 states and 40296 transitions. [2022-07-19 12:49:58,615 INFO L78 Accepts]: Start accepts. Automaton has 38644 states and 40296 transitions. Word has length 716 [2022-07-19 12:49:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:49:58,616 INFO L495 AbstractCegarLoop]: Abstraction has 38644 states and 40296 transitions. [2022-07-19 12:49:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.25) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:49:58,616 INFO L276 IsEmpty]: Start isEmpty. Operand 38644 states and 40296 transitions. [2022-07-19 12:49:58,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1260 [2022-07-19 12:49:58,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:49:58,635 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:49:58,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 12:49:58,635 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:49:58,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:49:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash 427401169, now seen corresponding path program 1 times [2022-07-19 12:49:58,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:49:58,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048531788] [2022-07-19 12:49:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:58,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:49:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1509 backedges. 485 proven. 938 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-19 12:49:59,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:49:59,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048531788] [2022-07-19 12:49:59,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048531788] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:49:59,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687122213] [2022-07-19 12:49:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:49:59,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:49:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:49:59,364 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) [2022-07-19 12:49:59,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 12:49:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:49:59,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:49:59,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:49:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1509 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2022-07-19 12:49:59,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:49:59,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687122213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:49:59,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:49:59,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 12:49:59,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35391356] [2022-07-19 12:49:59,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:49:59,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:49:59,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:49:59,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:49:59,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:49:59,853 INFO L87 Difference]: Start difference. First operand 38644 states and 40296 transitions. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:01,520 INFO L93 Difference]: Finished difference Result 78666 states and 81988 transitions. [2022-07-19 12:50:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:01,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 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 1259 [2022-07-19 12:50:01,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:01,560 INFO L225 Difference]: With dead ends: 78666 [2022-07-19 12:50:01,560 INFO L226 Difference]: Without dead ends: 38644 [2022-07-19 12:50:01,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1265 GetRequests, 1259 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:50:01,587 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 642 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1654 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:01,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 809 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1654 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 12:50:01,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38644 states. [2022-07-19 12:50:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38644 to 37954. [2022-07-19 12:50:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37954 states, 37953 states have (on average 1.0393381287381762) internal successors, (39446), 37953 states have internal predecessors, (39446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37954 states to 37954 states and 39446 transitions. [2022-07-19 12:50:01,997 INFO L78 Accepts]: Start accepts. Automaton has 37954 states and 39446 transitions. Word has length 1259 [2022-07-19 12:50:01,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:01,998 INFO L495 AbstractCegarLoop]: Abstraction has 37954 states and 39446 transitions. [2022-07-19 12:50:01,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:01,999 INFO L276 IsEmpty]: Start isEmpty. Operand 37954 states and 39446 transitions. [2022-07-19 12:50:02,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1311 [2022-07-19 12:50:02,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:02,025 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:50:02,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 12:50:02,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 12:50:02,228 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:02,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:02,229 INFO L85 PathProgramCache]: Analyzing trace with hash 515794031, now seen corresponding path program 1 times [2022-07-19 12:50:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:02,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834398175] [2022-07-19 12:50:02,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:02,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 714 proven. 1039 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-19 12:50:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:03,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834398175] [2022-07-19 12:50:03,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834398175] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:50:03,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385012598] [2022-07-19 12:50:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:03,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:50:03,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:50:03,034 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) [2022-07-19 12:50:03,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 12:50:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:03,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:50:03,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:50:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1923 backedges. 1049 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2022-07-19 12:50:03,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:50:03,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385012598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:03,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:50:03,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 12:50:03,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391686154] [2022-07-19 12:50:03,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:03,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:50:03,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:03,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:50:03,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:50:03,643 INFO L87 Difference]: Start difference. First operand 37954 states and 39446 transitions. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:05,255 INFO L93 Difference]: Finished difference Result 88326 states and 92200 transitions. [2022-07-19 12:50:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:05,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 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 1310 [2022-07-19 12:50:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:05,311 INFO L225 Difference]: With dead ends: 88326 [2022-07-19 12:50:05,311 INFO L226 Difference]: Without dead ends: 51064 [2022-07-19 12:50:05,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1316 GetRequests, 1310 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:50:05,336 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 553 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:05,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 148 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 12:50:05,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51064 states. [2022-07-19 12:50:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51064 to 50374. [2022-07-19 12:50:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50374 states, 50373 states have (on average 1.0370833581482144) internal successors, (52241), 50373 states have internal predecessors, (52241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50374 states to 50374 states and 52241 transitions. [2022-07-19 12:50:05,820 INFO L78 Accepts]: Start accepts. Automaton has 50374 states and 52241 transitions. Word has length 1310 [2022-07-19 12:50:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:05,821 INFO L495 AbstractCegarLoop]: Abstraction has 50374 states and 52241 transitions. [2022-07-19 12:50:05,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:05,821 INFO L276 IsEmpty]: Start isEmpty. Operand 50374 states and 52241 transitions. [2022-07-19 12:50:05,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1352 [2022-07-19 12:50:05,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:05,840 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:50:05,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 12:50:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:50:06,041 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:06,041 INFO L85 PathProgramCache]: Analyzing trace with hash 201792362, now seen corresponding path program 1 times [2022-07-19 12:50:06,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:06,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964317185] [2022-07-19 12:50:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:06,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2647 backedges. 1504 proven. 0 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2022-07-19 12:50:06,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:06,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964317185] [2022-07-19 12:50:06,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964317185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:06,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:50:06,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:50:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110945217] [2022-07-19 12:50:06,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:06,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:50:06,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:06,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:50:06,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:50:06,481 INFO L87 Difference]: Start difference. First operand 50374 states and 52241 transitions. Second operand has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:08,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:08,220 INFO L93 Difference]: Finished difference Result 100056 states and 103789 transitions. [2022-07-19 12:50:08,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:08,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 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 1351 [2022-07-19 12:50:08,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:08,281 INFO L225 Difference]: With dead ends: 100056 [2022-07-19 12:50:08,281 INFO L226 Difference]: Without dead ends: 50374 [2022-07-19 12:50:08,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:50:08,307 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 658 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:08,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 761 Invalid, 1893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 12:50:08,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50374 states. [2022-07-19 12:50:08,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50374 to 50374. [2022-07-19 12:50:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50374 states, 50373 states have (on average 1.035495205764993) internal successors, (52161), 50373 states have internal predecessors, (52161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:08,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50374 states to 50374 states and 52161 transitions. [2022-07-19 12:50:08,728 INFO L78 Accepts]: Start accepts. Automaton has 50374 states and 52161 transitions. Word has length 1351 [2022-07-19 12:50:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:08,728 INFO L495 AbstractCegarLoop]: Abstraction has 50374 states and 52161 transitions. [2022-07-19 12:50:08,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.66666666666666) internal successors, (704), 3 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 50374 states and 52161 transitions. [2022-07-19 12:50:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1363 [2022-07-19 12:50:08,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:08,749 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, 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, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:50:08,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 12:50:08,749 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:08,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:08,750 INFO L85 PathProgramCache]: Analyzing trace with hash -256962834, now seen corresponding path program 1 times [2022-07-19 12:50:08,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:08,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620563658] [2022-07-19 12:50:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:08,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2297 backedges. 661 proven. 0 refuted. 0 times theorem prover too weak. 1636 trivial. 0 not checked. [2022-07-19 12:50:09,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:09,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620563658] [2022-07-19 12:50:09,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620563658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:09,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:50:09,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:50:09,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864627811] [2022-07-19 12:50:09,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:09,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:50:09,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:09,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:50:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:50:09,523 INFO L87 Difference]: Start difference. First operand 50374 states and 52161 transitions. Second operand has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:11,439 INFO L93 Difference]: Finished difference Result 109716 states and 113991 transitions. [2022-07-19 12:50:11,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 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 1362 [2022-07-19 12:50:11,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:11,501 INFO L225 Difference]: With dead ends: 109716 [2022-07-19 12:50:11,501 INFO L226 Difference]: Without dead ends: 60034 [2022-07-19 12:50:11,529 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 [2022-07-19 12:50:11,530 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 612 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:11,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 276 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1748 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:50:11,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60034 states. [2022-07-19 12:50:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60034 to 51064. [2022-07-19 12:50:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51064 states, 51063 states have (on average 1.035211405518673) internal successors, (52861), 51063 states have internal predecessors, (52861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:12,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51064 states to 51064 states and 52861 transitions. [2022-07-19 12:50:12,337 INFO L78 Accepts]: Start accepts. Automaton has 51064 states and 52861 transitions. Word has length 1362 [2022-07-19 12:50:12,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:12,338 INFO L495 AbstractCegarLoop]: Abstraction has 51064 states and 52861 transitions. [2022-07-19 12:50:12,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:12,338 INFO L276 IsEmpty]: Start isEmpty. Operand 51064 states and 52861 transitions. [2022-07-19 12:50:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1394 [2022-07-19 12:50:12,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:12,362 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:50:12,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 12:50:12,362 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:12,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:12,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2026242383, now seen corresponding path program 1 times [2022-07-19 12:50:12,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:12,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983310335] [2022-07-19 12:50:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2105 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 1956 trivial. 0 not checked. [2022-07-19 12:50:12,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:12,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983310335] [2022-07-19 12:50:12,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983310335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:12,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:50:12,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:50:12,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424187113] [2022-07-19 12:50:12,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:12,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:50:12,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:12,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:50:12,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:50:12,946 INFO L87 Difference]: Start difference. First operand 51064 states and 52861 transitions. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:15,764 INFO L93 Difference]: Finished difference Result 122833 states and 127528 transitions. [2022-07-19 12:50:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:50:15,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 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 1393 [2022-07-19 12:50:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:15,844 INFO L225 Difference]: With dead ends: 122833 [2022-07-19 12:50:15,844 INFO L226 Difference]: Without dead ends: 71074 [2022-07-19 12:50:15,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:50:15,967 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 1401 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3372 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 3745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 3372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:15,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 111 Invalid, 3745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 3372 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:50:16,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71074 states. [2022-07-19 12:50:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71074 to 69694. [2022-07-19 12:50:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69694 states, 69693 states have (on average 1.037679537399739) internal successors, (72319), 69693 states have internal predecessors, (72319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69694 states to 69694 states and 72319 transitions. [2022-07-19 12:50:16,713 INFO L78 Accepts]: Start accepts. Automaton has 69694 states and 72319 transitions. Word has length 1393 [2022-07-19 12:50:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:16,714 INFO L495 AbstractCegarLoop]: Abstraction has 69694 states and 72319 transitions. [2022-07-19 12:50:16,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 69694 states and 72319 transitions. [2022-07-19 12:50:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2022-07-19 12:50:16,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:16,742 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, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:50:16,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 12:50:16,742 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:16,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:16,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1152186469, now seen corresponding path program 1 times [2022-07-19 12:50:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:16,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524421020] [2022-07-19 12:50:16,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:16,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2869 backedges. 1389 proven. 1199 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2022-07-19 12:50:17,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:17,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524421020] [2022-07-19 12:50:17,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524421020] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:50:17,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462285677] [2022-07-19 12:50:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:17,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:50:17,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:50:17,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:50:17,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 12:50:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:17,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1794 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:50:17,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:50:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2869 backedges. 1463 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-07-19 12:50:18,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:50:18,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462285677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:18,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:50:18,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-19 12:50:18,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146251460] [2022-07-19 12:50:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:18,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:50:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:18,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:50:18,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:50:18,148 INFO L87 Difference]: Start difference. First operand 69694 states and 72319 transitions. Second operand has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:19,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:19,832 INFO L93 Difference]: Finished difference Result 138696 states and 143945 transitions. [2022-07-19 12:50:19,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:19,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 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 1536 [2022-07-19 12:50:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:19,904 INFO L225 Difference]: With dead ends: 138696 [2022-07-19 12:50:19,904 INFO L226 Difference]: Without dead ends: 69694 [2022-07-19 12:50:19,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1536 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:50:19,945 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 623 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:19,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 885 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 12:50:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69694 states. [2022-07-19 12:50:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69694 to 68314. [2022-07-19 12:50:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68314 states, 68313 states have (on average 1.0262907499304672) internal successors, (70109), 68313 states have internal predecessors, (70109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68314 states to 68314 states and 70109 transitions. [2022-07-19 12:50:20,741 INFO L78 Accepts]: Start accepts. Automaton has 68314 states and 70109 transitions. Word has length 1536 [2022-07-19 12:50:20,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:20,742 INFO L495 AbstractCegarLoop]: Abstraction has 68314 states and 70109 transitions. [2022-07-19 12:50:20,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 68314 states and 70109 transitions. [2022-07-19 12:50:20,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1542 [2022-07-19 12:50:20,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:20,774 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:50:20,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 12:50:20,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 12:50:21,000 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:21,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:21,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1290877701, now seen corresponding path program 1 times [2022-07-19 12:50:21,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:21,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758530090] [2022-07-19 12:50:21,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:21,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3217 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 3018 trivial. 0 not checked. [2022-07-19 12:50:21,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:21,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758530090] [2022-07-19 12:50:21,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758530090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:21,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:50:21,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:50:21,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52585075] [2022-07-19 12:50:21,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:21,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:50:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:50:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:50:21,624 INFO L87 Difference]: Start difference. First operand 68314 states and 70109 transitions. Second operand has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 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) [2022-07-19 12:50:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:24,253 INFO L93 Difference]: Finished difference Result 71094 states and 72917 transitions. [2022-07-19 12:50:24,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:50:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 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 1541 [2022-07-19 12:50:24,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:24,318 INFO L225 Difference]: With dead ends: 71094 [2022-07-19 12:50:24,318 INFO L226 Difference]: Without dead ends: 70384 [2022-07-19 12:50:24,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:50:24,335 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 1398 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3394 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 3394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:24,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 116 Invalid, 3706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 3394 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:50:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70384 states. [2022-07-19 12:50:24,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70384 to 68314. [2022-07-19 12:50:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68314 states, 68313 states have (on average 1.0262321959217133) internal successors, (70105), 68313 states have internal predecessors, (70105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68314 states to 68314 states and 70105 transitions. [2022-07-19 12:50:24,992 INFO L78 Accepts]: Start accepts. Automaton has 68314 states and 70105 transitions. Word has length 1541 [2022-07-19 12:50:24,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:24,993 INFO L495 AbstractCegarLoop]: Abstraction has 68314 states and 70105 transitions. [2022-07-19 12:50:24,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 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) [2022-07-19 12:50:24,993 INFO L276 IsEmpty]: Start isEmpty. Operand 68314 states and 70105 transitions. [2022-07-19 12:50:25,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1643 [2022-07-19 12:50:25,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:25,047 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:50:25,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 12:50:25,047 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2039980666, now seen corresponding path program 1 times [2022-07-19 12:50:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:25,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684888491] [2022-07-19 12:50:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:25,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2653 backedges. 1518 proven. 1110 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 12:50:25,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:25,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684888491] [2022-07-19 12:50:25,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684888491] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:50:25,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797540538] [2022-07-19 12:50:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:25,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:50:25,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:50:25,910 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:50:25,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 12:50:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:26,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 1876 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 12:50:26,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:50:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2653 backedges. 1614 proven. 0 refuted. 0 times theorem prover too weak. 1039 trivial. 0 not checked. [2022-07-19 12:50:26,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:50:26,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797540538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:26,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:50:26,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 12:50:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728318300] [2022-07-19 12:50:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:26,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:50:26,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:26,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:50:26,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-19 12:50:26,612 INFO L87 Difference]: Start difference. First operand 68314 states and 70105 transitions. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:28,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:28,263 INFO L93 Difference]: Finished difference Result 135936 states and 139517 transitions. [2022-07-19 12:50:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:28,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 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 1642 [2022-07-19 12:50:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:28,337 INFO L225 Difference]: With dead ends: 135936 [2022-07-19 12:50:28,337 INFO L226 Difference]: Without dead ends: 68314 [2022-07-19 12:50:28,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1650 GetRequests, 1642 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-19 12:50:28,371 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 589 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:28,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 958 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1658 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 12:50:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68314 states. [2022-07-19 12:50:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68314 to 68314. [2022-07-19 12:50:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68314 states, 68313 states have (on average 1.025997979886698) internal successors, (70089), 68313 states have internal predecessors, (70089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68314 states to 68314 states and 70089 transitions. [2022-07-19 12:50:29,072 INFO L78 Accepts]: Start accepts. Automaton has 68314 states and 70089 transitions. Word has length 1642 [2022-07-19 12:50:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:29,073 INFO L495 AbstractCegarLoop]: Abstraction has 68314 states and 70089 transitions. [2022-07-19 12:50:29,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 68314 states and 70089 transitions. [2022-07-19 12:50:29,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1678 [2022-07-19 12:50:29,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:29,112 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:50:29,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 12:50:29,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:50:29,313 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:29,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1402093489, now seen corresponding path program 1 times [2022-07-19 12:50:29,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:29,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253913765] [2022-07-19 12:50:29,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:29,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:30,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2933 backedges. 1966 proven. 0 refuted. 0 times theorem prover too weak. 967 trivial. 0 not checked. [2022-07-19 12:50:30,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:30,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253913765] [2022-07-19 12:50:30,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253913765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:30,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:50:30,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:50:30,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063485861] [2022-07-19 12:50:30,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:30,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:50:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:30,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:50:30,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:50:30,051 INFO L87 Difference]: Start difference. First operand 68314 states and 70089 transitions. Second operand has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:32,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:32,057 INFO L93 Difference]: Finished difference Result 153186 states and 157277 transitions. [2022-07-19 12:50:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:32,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 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 1677 [2022-07-19 12:50:32,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:32,136 INFO L225 Difference]: With dead ends: 153186 [2022-07-19 12:50:32,136 INFO L226 Difference]: Without dead ends: 85564 [2022-07-19 12:50:32,153 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 [2022-07-19 12:50:32,153 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 617 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:32,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 202 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:50:32,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85564 states. [2022-07-19 12:50:32,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85564 to 85564. [2022-07-19 12:50:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85564 states, 85563 states have (on average 1.0249406869791848) internal successors, (87697), 85563 states have internal predecessors, (87697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85564 states to 85564 states and 87697 transitions. [2022-07-19 12:50:32,950 INFO L78 Accepts]: Start accepts. Automaton has 85564 states and 87697 transitions. Word has length 1677 [2022-07-19 12:50:32,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:32,951 INFO L495 AbstractCegarLoop]: Abstraction has 85564 states and 87697 transitions. [2022-07-19 12:50:32,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:32,951 INFO L276 IsEmpty]: Start isEmpty. Operand 85564 states and 87697 transitions. [2022-07-19 12:50:32,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1817 [2022-07-19 12:50:32,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:32,994 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:50:32,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 12:50:32,994 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:32,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:32,995 INFO L85 PathProgramCache]: Analyzing trace with hash 950761193, now seen corresponding path program 1 times [2022-07-19 12:50:32,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:32,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402673919] [2022-07-19 12:50:32,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:32,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 2269 proven. 0 refuted. 0 times theorem prover too weak. 1466 trivial. 0 not checked. [2022-07-19 12:50:33,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:33,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402673919] [2022-07-19 12:50:33,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402673919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:33,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:50:33,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:50:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895923645] [2022-07-19 12:50:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:33,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:50:33,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:33,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:50:33,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:50:33,840 INFO L87 Difference]: Start difference. First operand 85564 states and 87697 transitions. Second operand has 3 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:35,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:35,779 INFO L93 Difference]: Finished difference Result 177336 states and 181884 transitions. [2022-07-19 12:50:35,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:35,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 0 states have call successors, (0), 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 1816 [2022-07-19 12:50:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:35,890 INFO L225 Difference]: With dead ends: 177336 [2022-07-19 12:50:35,891 INFO L226 Difference]: Without dead ends: 92464 [2022-07-19 12:50:35,949 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 [2022-07-19 12:50:35,951 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 502 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1656 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 1656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:35,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 794 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 1656 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 12:50:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92464 states. [2022-07-19 12:50:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92464 to 89014. [2022-07-19 12:50:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89014 states, 89013 states have (on average 1.0219630840439038) internal successors, (90968), 89013 states have internal predecessors, (90968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:36,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89014 states to 89014 states and 90968 transitions. [2022-07-19 12:50:36,989 INFO L78 Accepts]: Start accepts. Automaton has 89014 states and 90968 transitions. Word has length 1816 [2022-07-19 12:50:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:36,990 INFO L495 AbstractCegarLoop]: Abstraction has 89014 states and 90968 transitions. [2022-07-19 12:50:36,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 379.3333333333333) internal successors, (1138), 3 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:36,990 INFO L276 IsEmpty]: Start isEmpty. Operand 89014 states and 90968 transitions. [2022-07-19 12:50:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1853 [2022-07-19 12:50:37,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:37,358 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:50:37,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 12:50:37,358 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:37,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1842779669, now seen corresponding path program 1 times [2022-07-19 12:50:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:37,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195788992] [2022-07-19 12:50:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:37,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3761 backedges. 2682 proven. 0 refuted. 0 times theorem prover too weak. 1079 trivial. 0 not checked. [2022-07-19 12:50:37,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:37,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195788992] [2022-07-19 12:50:37,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195788992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:37,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:50:37,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:50:37,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151787591] [2022-07-19 12:50:37,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:37,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:50:37,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:37,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:50:37,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:50:37,983 INFO L87 Difference]: Start difference. First operand 89014 states and 90968 transitions. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:39,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:39,901 INFO L93 Difference]: Finished difference Result 191136 states and 195436 transitions. [2022-07-19 12:50:39,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:39,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 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 1852 [2022-07-19 12:50:39,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:40,026 INFO L225 Difference]: With dead ends: 191136 [2022-07-19 12:50:40,027 INFO L226 Difference]: Without dead ends: 102814 [2022-07-19 12:50:40,081 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 [2022-07-19 12:50:40,081 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 444 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:40,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 937 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 12:50:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102814 states. [2022-07-19 12:50:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102814 to 99364. [2022-07-19 12:50:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99364 states, 99363 states have (on average 1.0197357165141954) internal successors, (101324), 99363 states have internal predecessors, (101324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99364 states to 99364 states and 101324 transitions. [2022-07-19 12:50:41,634 INFO L78 Accepts]: Start accepts. Automaton has 99364 states and 101324 transitions. Word has length 1852 [2022-07-19 12:50:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:41,636 INFO L495 AbstractCegarLoop]: Abstraction has 99364 states and 101324 transitions. [2022-07-19 12:50:41,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 99364 states and 101324 transitions. [2022-07-19 12:50:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1861 [2022-07-19 12:50:41,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:41,693 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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, 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, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:50:41,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 12:50:41,694 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:41,695 INFO L85 PathProgramCache]: Analyzing trace with hash -690609024, now seen corresponding path program 1 times [2022-07-19 12:50:41,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:41,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79939218] [2022-07-19 12:50:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:41,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4112 backedges. 2813 proven. 0 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2022-07-19 12:50:42,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:42,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79939218] [2022-07-19 12:50:42,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79939218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:42,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:50:42,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:50:42,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916039641] [2022-07-19 12:50:42,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:42,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:50:42,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:50:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:50:42,223 INFO L87 Difference]: Start difference. First operand 99364 states and 101324 transitions. Second operand has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:44,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:44,270 INFO L93 Difference]: Finished difference Result 198036 states and 201956 transitions. [2022-07-19 12:50:44,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:50:44,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1860 [2022-07-19 12:50:44,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:44,373 INFO L225 Difference]: With dead ends: 198036 [2022-07-19 12:50:44,373 INFO L226 Difference]: Without dead ends: 99364 [2022-07-19 12:50:44,425 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 [2022-07-19 12:50:44,426 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 577 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:44,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 938 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:50:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99364 states. [2022-07-19 12:50:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99364 to 96604. [2022-07-19 12:50:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96604 states, 96603 states have (on average 1.0158690723890562) internal successors, (98136), 96603 states have internal predecessors, (98136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:45,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96604 states to 96604 states and 98136 transitions. [2022-07-19 12:50:45,534 INFO L78 Accepts]: Start accepts. Automaton has 96604 states and 98136 transitions. Word has length 1860 [2022-07-19 12:50:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:45,535 INFO L495 AbstractCegarLoop]: Abstraction has 96604 states and 98136 transitions. [2022-07-19 12:50:45,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 96604 states and 98136 transitions. [2022-07-19 12:50:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1922 [2022-07-19 12:50:45,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:45,969 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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, 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, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:50:45,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 12:50:45,970 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:45,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:45,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1450458666, now seen corresponding path program 1 times [2022-07-19 12:50:45,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:45,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706003338] [2022-07-19 12:50:45,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:45,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4191 backedges. 3055 proven. 0 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2022-07-19 12:50:46,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:46,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706003338] [2022-07-19 12:50:46,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706003338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:46,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:50:46,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:50:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699854566] [2022-07-19 12:50:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:46,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:50:46,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:50:46,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:50:46,654 INFO L87 Difference]: Start difference. First operand 96604 states and 98136 transitions. Second operand has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:49,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:49,716 INFO L93 Difference]: Finished difference Result 216666 states and 220177 transitions. [2022-07-19 12:50:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:50:49,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 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 1921 [2022-07-19 12:50:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:49,850 INFO L225 Difference]: With dead ends: 216666 [2022-07-19 12:50:49,850 INFO L226 Difference]: Without dead ends: 120754 [2022-07-19 12:50:49,906 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 [2022-07-19 12:50:49,906 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 1245 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 3483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:49,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 938 Invalid, 3483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 3236 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:50:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120754 states. [2022-07-19 12:50:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120754 to 119374. [2022-07-19 12:50:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119374 states, 119373 states have (on average 1.0139143692459769) internal successors, (121034), 119373 states have internal predecessors, (121034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119374 states to 119374 states and 121034 transitions. [2022-07-19 12:50:51,748 INFO L78 Accepts]: Start accepts. Automaton has 119374 states and 121034 transitions. Word has length 1921 [2022-07-19 12:50:51,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:51,748 INFO L495 AbstractCegarLoop]: Abstraction has 119374 states and 121034 transitions. [2022-07-19 12:50:51,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:51,749 INFO L276 IsEmpty]: Start isEmpty. Operand 119374 states and 121034 transitions. [2022-07-19 12:50:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1995 [2022-07-19 12:50:51,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:51,811 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, 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, 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, 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, 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, 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] [2022-07-19 12:50:51,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 12:50:51,811 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:51,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1964983249, now seen corresponding path program 1 times [2022-07-19 12:50:51,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:51,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721344772] [2022-07-19 12:50:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:51,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2837 proven. 581 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2022-07-19 12:50:52,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:50:52,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721344772] [2022-07-19 12:50:52,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721344772] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:50:52,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279039052] [2022-07-19 12:50:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:52,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:50:52,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:50:52,599 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:50:52,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 12:50:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:50:53,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 2262 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 12:50:53,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:50:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4140 backedges. 2843 proven. 0 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2022-07-19 12:50:54,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:50:54,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279039052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:50:54,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:50:54,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-07-19 12:50:54,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291706171] [2022-07-19 12:50:54,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:50:54,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:50:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:50:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:50:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-19 12:50:54,604 INFO L87 Difference]: Start difference. First operand 119374 states and 121034 transitions. Second operand has 4 states, 4 states have (on average 256.0) internal successors, (1024), 3 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:50:57,516 INFO L93 Difference]: Finished difference Result 251856 states and 255408 transitions. [2022-07-19 12:50:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:50:57,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 256.0) internal successors, (1024), 3 states have internal predecessors, (1024), 0 states have call successors, (0), 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 1994 [2022-07-19 12:50:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:50:57,654 INFO L225 Difference]: With dead ends: 251856 [2022-07-19 12:50:57,654 INFO L226 Difference]: Without dead ends: 133174 [2022-07-19 12:50:57,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2001 GetRequests, 1992 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-19 12:50:57,703 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 984 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:50:57,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 65 Invalid, 2980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 12:50:57,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133174 states. [2022-07-19 12:50:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133174 to 117994. [2022-07-19 12:50:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117994 states, 117993 states have (on average 1.0139584551625944) internal successors, (119640), 117993 states have internal predecessors, (119640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117994 states to 117994 states and 119640 transitions. [2022-07-19 12:50:59,107 INFO L78 Accepts]: Start accepts. Automaton has 117994 states and 119640 transitions. Word has length 1994 [2022-07-19 12:50:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:50:59,108 INFO L495 AbstractCegarLoop]: Abstraction has 117994 states and 119640 transitions. [2022-07-19 12:50:59,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.0) internal successors, (1024), 3 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:50:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 117994 states and 119640 transitions. [2022-07-19 12:50:59,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2049 [2022-07-19 12:50:59,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:50:59,550 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 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, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-07-19 12:50:59,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 12:50:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-19 12:50:59,776 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:50:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:50:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2101039494, now seen corresponding path program 1 times [2022-07-19 12:50:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:50:59,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32219218] [2022-07-19 12:50:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:50:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:50:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:51:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 2191 proven. 1115 refuted. 0 times theorem prover too weak. 1339 trivial. 0 not checked. [2022-07-19 12:51:00,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:51:00,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32219218] [2022-07-19 12:51:00,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32219218] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:51:00,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481013898] [2022-07-19 12:51:00,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:51:00,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:51:00,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:51:00,555 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:51:00,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 12:51:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:51:00,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 12:51:01,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:51:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4645 backedges. 2292 proven. 0 refuted. 0 times theorem prover too weak. 2353 trivial. 0 not checked. [2022-07-19 12:51:01,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:51:01,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481013898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:51:01,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:51:01,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 12:51:01,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645894314] [2022-07-19 12:51:01,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:51:01,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:51:01,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:51:01,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:51:01,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:51:01,215 INFO L87 Difference]: Start difference. First operand 117994 states and 119640 transitions. Second operand has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:51:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:51:03,043 INFO L93 Difference]: Finished difference Result 233916 states and 237178 transitions. [2022-07-19 12:51:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:51:03,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 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 2048 [2022-07-19 12:51:03,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:51:03,181 INFO L225 Difference]: With dead ends: 233916 [2022-07-19 12:51:03,182 INFO L226 Difference]: Without dead ends: 116614 [2022-07-19 12:51:03,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2053 GetRequests, 2048 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:51:03,257 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 595 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:51:03,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 928 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 12:51:03,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116614 states.