./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem06_label34.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem06_label34.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 5720b7b8988236e90efce736cf3593749047732c946eecc8fea6a291ed30b9c6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 08:55:50,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 08:55:50,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 08:55:50,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 08:55:50,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 08:55:50,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 08:55:50,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 08:55:50,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 08:55:50,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 08:55:50,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 08:55:50,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 08:55:50,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 08:55:50,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 08:55:50,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 08:55:50,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 08:55:50,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 08:55:50,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 08:55:50,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 08:55:50,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 08:55:50,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 08:55:50,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 08:55:50,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 08:55:50,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 08:55:50,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 08:55:50,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 08:55:50,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 08:55:50,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 08:55:50,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 08:55:50,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 08:55:50,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 08:55:50,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 08:55:50,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 08:55:50,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 08:55:50,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 08:55:50,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 08:55:50,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 08:55:50,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 08:55:50,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 08:55:50,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 08:55:50,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 08:55:50,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 08:55:50,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 08:55:50,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 08:55:50,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 08:55:50,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 08:55:50,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 08:55:50,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 08:55:50,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 08:55:50,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 08:55:50,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 08:55:50,439 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 08:55:50,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 08:55:50,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 08:55:50,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 08:55:50,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 08:55:50,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 08:55:50,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 08:55:50,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 08:55:50,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 08:55:50,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 08:55:50,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 08:55:50,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 08:55:50,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 08:55:50,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 08:55:50,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 08:55:50,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 08:55:50,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:55:50,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 08:55:50,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 08:55:50,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 08:55:50,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 08:55:50,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 08:55:50,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 08:55:50,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 08:55:50,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 08:55:50,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 08:55:50,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5720b7b8988236e90efce736cf3593749047732c946eecc8fea6a291ed30b9c6 [2021-12-22 08:55:50,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 08:55:50,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 08:55:50,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 08:55:50,694 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 08:55:50,694 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 08:55:50,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem06_label34.c [2021-12-22 08:55:50,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b1aab3f/5ddded4d48e04a2ba37742fdf395647f/FLAGec1216faf [2021-12-22 08:55:51,517 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 08:55:51,517 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem06_label34.c [2021-12-22 08:55:51,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b1aab3f/5ddded4d48e04a2ba37742fdf395647f/FLAGec1216faf [2021-12-22 08:55:51,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b1aab3f/5ddded4d48e04a2ba37742fdf395647f [2021-12-22 08:55:51,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 08:55:51,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 08:55:51,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 08:55:51,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 08:55:51,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 08:55:51,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:55:51" (1/1) ... [2021-12-22 08:55:51,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f679807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:51, skipping insertion in model container [2021-12-22 08:55:51,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:55:51" (1/1) ... [2021-12-22 08:55:51,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 08:55:51,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 08:55:53,341 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem06_label34.c[336423,336436] [2021-12-22 08:55:53,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:55:53,367 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 08:55:54,127 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem06_label34.c[336423,336436] [2021-12-22 08:55:54,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 08:55:54,168 INFO L208 MainTranslator]: Completed translation [2021-12-22 08:55:54,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54 WrapperNode [2021-12-22 08:55:54,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 08:55:54,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 08:55:54,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 08:55:54,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 08:55:54,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:54,269 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:54,575 INFO L137 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 10173 [2021-12-22 08:55:54,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 08:55:54,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 08:55:54,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 08:55:54,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 08:55:54,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:54,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:54,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:54,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:54,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:54,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:54,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:55,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 08:55:55,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 08:55:55,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 08:55:55,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 08:55:55,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (1/1) ... [2021-12-22 08:55:55,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 08:55:55,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 08:55:55,073 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) [2021-12-22 08:55:55,136 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 [2021-12-22 08:55:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 08:55:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 08:55:55,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 08:55:55,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 08:55:55,295 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 08:55:55,303 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 08:56:00,269 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 08:56:00,290 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 08:56:00,290 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 08:56:00,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:00 BoogieIcfgContainer [2021-12-22 08:56:00,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 08:56:00,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 08:56:00,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 08:56:00,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 08:56:00,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:55:51" (1/3) ... [2021-12-22 08:56:00,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244f70ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:00, skipping insertion in model container [2021-12-22 08:56:00,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:55:54" (2/3) ... [2021-12-22 08:56:00,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244f70ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:00, skipping insertion in model container [2021-12-22 08:56:00,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:00" (3/3) ... [2021-12-22 08:56:00,301 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label34.c [2021-12-22 08:56:00,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 08:56:00,305 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 08:56:00,352 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 08:56:00,359 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 08:56:00,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 08:56:00,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 1290 states, 1288 states have (on average 1.8571428571428572) internal successors, (2392), 1289 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:00,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2021-12-22 08:56:00,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:56:00,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:56:00,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:56:00,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:56:00,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1837145645, now seen corresponding path program 1 times [2021-12-22 08:56:00,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:56:00,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145847458] [2021-12-22 08:56:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:56:00,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:56:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:56:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:56:01,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:56:01,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145847458] [2021-12-22 08:56:01,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145847458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:56:01,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:56:01,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:56:01,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107105374] [2021-12-22 08:56:01,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:56:01,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:56:01,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:56:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:56:01,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:56:01,865 INFO L87 Difference]: Start difference. First operand has 1290 states, 1288 states have (on average 1.8571428571428572) internal successors, (2392), 1289 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 2 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:56:05,955 INFO L93 Difference]: Finished difference Result 3664 states and 6878 transitions. [2021-12-22 08:56:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:56:05,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 2 states have internal predecessors, (979), 0 states have call successors, (0), 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 979 [2021-12-22 08:56:05,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:56:05,983 INFO L225 Difference]: With dead ends: 3664 [2021-12-22 08:56:05,984 INFO L226 Difference]: Without dead ends: 2310 [2021-12-22 08:56:05,992 INFO L932 BasicCegarLoop]: 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 [2021-12-22 08:56:05,995 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 565 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 1120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 4087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1120 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-22 08:56:05,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 989 Invalid, 4087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1120 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-22 08:56:06,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-12-22 08:56:06,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2301. [2021-12-22 08:56:06,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2300 states have (on average 1.6908695652173913) internal successors, (3889), 2300 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:06,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3889 transitions. [2021-12-22 08:56:06,126 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3889 transitions. Word has length 979 [2021-12-22 08:56:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:56:06,129 INFO L470 AbstractCegarLoop]: Abstraction has 2301 states and 3889 transitions. [2021-12-22 08:56:06,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 2 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3889 transitions. [2021-12-22 08:56:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2021-12-22 08:56:06,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:56:06,155 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:56:06,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 08:56:06,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:56:06,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:56:06,159 INFO L85 PathProgramCache]: Analyzing trace with hash -69408144, now seen corresponding path program 1 times [2021-12-22 08:56:06,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:56:06,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469652687] [2021-12-22 08:56:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:56:06,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:56:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:56:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:56:06,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:56:06,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469652687] [2021-12-22 08:56:06,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469652687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:56:06,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:56:06,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:56:06,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508015664] [2021-12-22 08:56:06,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:56:06,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:56:06,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:56:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:56:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:56:06,661 INFO L87 Difference]: Start difference. First operand 2301 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 329.0) internal successors, (987), 2 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:10,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:56:10,138 INFO L93 Difference]: Finished difference Result 5632 states and 9380 transitions. [2021-12-22 08:56:10,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:56:10,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 329.0) internal successors, (987), 2 states have internal predecessors, (987), 0 states have call successors, (0), 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 987 [2021-12-22 08:56:10,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:56:10,153 INFO L225 Difference]: With dead ends: 5632 [2021-12-22 08:56:10,154 INFO L226 Difference]: Without dead ends: 3333 [2021-12-22 08:56:10,158 INFO L932 BasicCegarLoop]: 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 [2021-12-22 08:56:10,160 INFO L933 BasicCegarLoop]: 943 mSDtfsCounter, 1199 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 3007 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 3663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 3007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-22 08:56:10,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1199 Valid, 1131 Invalid, 3663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 3007 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-22 08:56:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2021-12-22 08:56:10,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 3324. [2021-12-22 08:56:10,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3323 states have (on average 1.5865182064399639) internal successors, (5272), 3323 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 5272 transitions. [2021-12-22 08:56:10,228 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 5272 transitions. Word has length 987 [2021-12-22 08:56:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:56:10,228 INFO L470 AbstractCegarLoop]: Abstraction has 3324 states and 5272 transitions. [2021-12-22 08:56:10,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.0) internal successors, (987), 2 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 5272 transitions. [2021-12-22 08:56:10,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2021-12-22 08:56:10,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:56:10,260 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:56:10,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 08:56:10,261 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:56:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:56:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1476255703, now seen corresponding path program 1 times [2021-12-22 08:56:10,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:56:10,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803234413] [2021-12-22 08:56:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:56:10,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:56:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:56:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 08:56:10,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:56:10,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803234413] [2021-12-22 08:56:10,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803234413] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:56:10,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:56:10,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:56:10,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244967483] [2021-12-22 08:56:10,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:56:10,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:56:10,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:56:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:56:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:56:10,642 INFO L87 Difference]: Start difference. First operand 3324 states and 5272 transitions. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 2 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:56:11,877 INFO L93 Difference]: Finished difference Result 9949 states and 15793 transitions. [2021-12-22 08:56:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:56:11,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 2 states have internal predecessors, (984), 0 states have call successors, (0), 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 991 [2021-12-22 08:56:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:56:11,903 INFO L225 Difference]: With dead ends: 9949 [2021-12-22 08:56:11,904 INFO L226 Difference]: Without dead ends: 6627 [2021-12-22 08:56:11,911 INFO L932 BasicCegarLoop]: 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 [2021-12-22 08:56:11,912 INFO L933 BasicCegarLoop]: 1736 mSDtfsCounter, 2096 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2096 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:56:11,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2096 Valid, 3346 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 08:56:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6627 states. [2021-12-22 08:56:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6627 to 6623. [2021-12-22 08:56:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 6622 states have (on average 1.5850196315312595) internal successors, (10496), 6622 states have internal predecessors, (10496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 10496 transitions. [2021-12-22 08:56:12,067 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 10496 transitions. Word has length 991 [2021-12-22 08:56:12,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:56:12,068 INFO L470 AbstractCegarLoop]: Abstraction has 6623 states and 10496 transitions. [2021-12-22 08:56:12,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 2 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 10496 transitions. [2021-12-22 08:56:12,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2021-12-22 08:56:12,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:56:12,094 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:56:12,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 08:56:12,095 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:56:12,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:56:12,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1020794425, now seen corresponding path program 1 times [2021-12-22 08:56:12,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:56:12,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665539241] [2021-12-22 08:56:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:56:12,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:56:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:56:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 08:56:12,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:56:12,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665539241] [2021-12-22 08:56:12,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665539241] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:56:12,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:56:12,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:56:12,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432155942] [2021-12-22 08:56:12,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:56:12,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:56:12,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:56:12,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:56:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:56:12,460 INFO L87 Difference]: Start difference. First operand 6623 states and 10496 transitions. Second operand has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 2 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:16,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:56:16,132 INFO L93 Difference]: Finished difference Result 19385 states and 30869 transitions. [2021-12-22 08:56:16,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:56:16,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 2 states have internal predecessors, (991), 0 states have call successors, (0), 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 991 [2021-12-22 08:56:16,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:56:16,173 INFO L225 Difference]: With dead ends: 19385 [2021-12-22 08:56:16,173 INFO L226 Difference]: Without dead ends: 12764 [2021-12-22 08:56:16,186 INFO L932 BasicCegarLoop]: 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 [2021-12-22 08:56:16,187 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1213 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 3325 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 4369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 3325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-22 08:56:16,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 907 Invalid, 4369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 3325 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-22 08:56:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12764 states. [2021-12-22 08:56:16,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12764 to 12634. [2021-12-22 08:56:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12634 states, 12633 states have (on average 1.5773767117865907) internal successors, (19927), 12633 states have internal predecessors, (19927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12634 states to 12634 states and 19927 transitions. [2021-12-22 08:56:16,434 INFO L78 Accepts]: Start accepts. Automaton has 12634 states and 19927 transitions. Word has length 991 [2021-12-22 08:56:16,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:56:16,435 INFO L470 AbstractCegarLoop]: Abstraction has 12634 states and 19927 transitions. [2021-12-22 08:56:16,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.3333333333333) internal successors, (991), 2 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 12634 states and 19927 transitions. [2021-12-22 08:56:16,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2021-12-22 08:56:16,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:56:16,472 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:56:16,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 08:56:16,472 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:56:16,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:56:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1558926994, now seen corresponding path program 1 times [2021-12-22 08:56:16,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:56:16,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253643560] [2021-12-22 08:56:16,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:56:16,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:56:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:56:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-22 08:56:16,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:56:16,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253643560] [2021-12-22 08:56:16,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253643560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:56:16,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:56:16,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:56:16,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76797128] [2021-12-22 08:56:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:56:16,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:56:16,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:56:16,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:56:16,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:56:16,816 INFO L87 Difference]: Start difference. First operand 12634 states and 19927 transitions. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 2 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:56:20,254 INFO L93 Difference]: Finished difference Result 37352 states and 59058 transitions. [2021-12-22 08:56:20,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:56:20,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 2 states have internal predecessors, (996), 0 states have call successors, (0), 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 1003 [2021-12-22 08:56:20,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:56:20,301 INFO L225 Difference]: With dead ends: 37352 [2021-12-22 08:56:20,301 INFO L226 Difference]: Without dead ends: 24720 [2021-12-22 08:56:20,313 INFO L932 BasicCegarLoop]: 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 [2021-12-22 08:56:20,314 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 1258 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 4021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-22 08:56:20,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 1050 Invalid, 4021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-22 08:56:20,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24720 states. [2021-12-22 08:56:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24720 to 24654. [2021-12-22 08:56:20,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24654 states, 24653 states have (on average 1.4454630268121527) internal successors, (35635), 24653 states have internal predecessors, (35635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24654 states to 24654 states and 35635 transitions. [2021-12-22 08:56:20,681 INFO L78 Accepts]: Start accepts. Automaton has 24654 states and 35635 transitions. Word has length 1003 [2021-12-22 08:56:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:56:20,682 INFO L470 AbstractCegarLoop]: Abstraction has 24654 states and 35635 transitions. [2021-12-22 08:56:20,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 2 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:20,683 INFO L276 IsEmpty]: Start isEmpty. Operand 24654 states and 35635 transitions. [2021-12-22 08:56:20,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1054 [2021-12-22 08:56:20,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:56:20,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:56:20,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 08:56:20,727 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:56:20,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:56:20,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1628660114, now seen corresponding path program 1 times [2021-12-22 08:56:20,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:56:20,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670624397] [2021-12-22 08:56:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:56:20,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:56:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:56:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-22 08:56:21,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:56:21,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670624397] [2021-12-22 08:56:21,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670624397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:56:21,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:56:21,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:56:21,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172800335] [2021-12-22 08:56:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:56:21,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:56:21,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:56:21,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:56:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:56:21,091 INFO L87 Difference]: Start difference. First operand 24654 states and 35635 transitions. Second operand has 3 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 2 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:56:24,557 INFO L93 Difference]: Finished difference Result 73230 states and 105928 transitions. [2021-12-22 08:56:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:56:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 2 states have internal predecessors, (1034), 0 states have call successors, (0), 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 1053 [2021-12-22 08:56:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:56:24,643 INFO L225 Difference]: With dead ends: 73230 [2021-12-22 08:56:24,644 INFO L226 Difference]: Without dead ends: 48578 [2021-12-22 08:56:24,664 INFO L932 BasicCegarLoop]: 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 [2021-12-22 08:56:24,665 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 1203 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 3216 mSolverCounterSat, 815 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 4031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 3216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:56:24,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1203 Valid, 1089 Invalid, 4031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 3216 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-22 08:56:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48578 states. [2021-12-22 08:56:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48578 to 48524. [2021-12-22 08:56:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48524 states, 48523 states have (on average 1.3476083506790595) internal successors, (65390), 48523 states have internal predecessors, (65390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48524 states to 48524 states and 65390 transitions. [2021-12-22 08:56:25,279 INFO L78 Accepts]: Start accepts. Automaton has 48524 states and 65390 transitions. Word has length 1053 [2021-12-22 08:56:25,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:56:25,279 INFO L470 AbstractCegarLoop]: Abstraction has 48524 states and 65390 transitions. [2021-12-22 08:56:25,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 2 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:25,280 INFO L276 IsEmpty]: Start isEmpty. Operand 48524 states and 65390 transitions. [2021-12-22 08:56:25,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1058 [2021-12-22 08:56:25,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:56:25,351 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:56:25,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 08:56:25,352 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:56:25,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:56:25,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1737295922, now seen corresponding path program 1 times [2021-12-22 08:56:25,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:56:25,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178152277] [2021-12-22 08:56:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:56:25,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:56:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:56:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-22 08:56:25,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:56:25,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178152277] [2021-12-22 08:56:25,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178152277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:56:25,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:56:25,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:56:25,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328314800] [2021-12-22 08:56:25,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:56:25,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:56:25,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:56:25,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:56:25,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:56:25,709 INFO L87 Difference]: Start difference. First operand 48524 states and 65390 transitions. Second operand has 3 states, 3 states have (on average 330.0) internal successors, (990), 2 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:29,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:56:29,416 INFO L93 Difference]: Finished difference Result 129093 states and 171261 transitions. [2021-12-22 08:56:29,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:56:29,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 330.0) internal successors, (990), 2 states have internal predecessors, (990), 0 states have call successors, (0), 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 1057 [2021-12-22 08:56:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:56:29,561 INFO L225 Difference]: With dead ends: 129093 [2021-12-22 08:56:29,562 INFO L226 Difference]: Without dead ends: 80571 [2021-12-22 08:56:29,608 INFO L932 BasicCegarLoop]: 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 [2021-12-22 08:56:29,609 INFO L933 BasicCegarLoop]: 1130 mSDtfsCounter, 1323 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 3631 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 3842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 3631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-22 08:56:29,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 1348 Invalid, 3842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 3631 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-22 08:56:29,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80571 states. [2021-12-22 08:56:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80571 to 80536. [2021-12-22 08:56:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80536 states, 80535 states have (on average 1.3104861240454462) internal successors, (105540), 80535 states have internal predecessors, (105540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:30,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80536 states to 80536 states and 105540 transitions. [2021-12-22 08:56:30,780 INFO L78 Accepts]: Start accepts. Automaton has 80536 states and 105540 transitions. Word has length 1057 [2021-12-22 08:56:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:56:30,780 INFO L470 AbstractCegarLoop]: Abstraction has 80536 states and 105540 transitions. [2021-12-22 08:56:30,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.0) internal successors, (990), 2 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 80536 states and 105540 transitions. [2021-12-22 08:56:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1062 [2021-12-22 08:56:30,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:56:30,884 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:56:30,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 08:56:30,885 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:56:30,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:56:30,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2089342417, now seen corresponding path program 1 times [2021-12-22 08:56:30,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:56:30,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115796088] [2021-12-22 08:56:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:56:30,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:56:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:56:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-22 08:56:31,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:56:31,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115796088] [2021-12-22 08:56:31,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115796088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:56:31,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:56:31,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:56:31,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411430113] [2021-12-22 08:56:31,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:56:31,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:56:31,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:56:31,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:56:31,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:56:31,651 INFO L87 Difference]: Start difference. First operand 80536 states and 105540 transitions. Second operand has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:35,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 08:56:35,887 INFO L93 Difference]: Finished difference Result 239706 states and 314124 transitions. [2021-12-22 08:56:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 08:56:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 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 1061 [2021-12-22 08:56:35,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 08:56:36,293 INFO L225 Difference]: With dead ends: 239706 [2021-12-22 08:56:36,293 INFO L226 Difference]: Without dead ends: 159172 [2021-12-22 08:56:36,393 INFO L932 BasicCegarLoop]: 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 [2021-12-22 08:56:36,394 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 1453 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 1307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 4029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1307 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-22 08:56:36,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 970 Invalid, 4029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1307 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-22 08:56:36,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159172 states. [2021-12-22 08:56:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159172 to 159119. [2021-12-22 08:56:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159119 states, 159118 states have (on average 1.243284857778504) internal successors, (197829), 159118 states have internal predecessors, (197829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159119 states to 159119 states and 197829 transitions. [2021-12-22 08:56:38,855 INFO L78 Accepts]: Start accepts. Automaton has 159119 states and 197829 transitions. Word has length 1061 [2021-12-22 08:56:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 08:56:38,855 INFO L470 AbstractCegarLoop]: Abstraction has 159119 states and 197829 transitions. [2021-12-22 08:56:38,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 2 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 08:56:38,856 INFO L276 IsEmpty]: Start isEmpty. Operand 159119 states and 197829 transitions. [2021-12-22 08:56:39,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2021-12-22 08:56:39,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 08:56:39,244 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 08:56:39,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 08:56:39,244 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 08:56:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 08:56:39,245 INFO L85 PathProgramCache]: Analyzing trace with hash 936219933, now seen corresponding path program 1 times [2021-12-22 08:56:39,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 08:56:39,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739106722] [2021-12-22 08:56:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 08:56:39,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 08:56:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 08:56:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-22 08:56:39,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 08:56:39,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739106722] [2021-12-22 08:56:39,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739106722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 08:56:39,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 08:56:39,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 08:56:39,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233368542] [2021-12-22 08:56:39,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 08:56:39,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 08:56:39,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 08:56:39,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 08:56:39,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 08:56:39,634 INFO L87 Difference]: Start difference. First operand 159119 states and 197829 transitions. Second operand has 3 states, 3 states have (on average 342.0) internal successors, (1026), 2 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)