./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/psyco/psyco_net_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/psyco/psyco_net_1.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 30408d7207b57838e2c50a4f8ea35b606de13b17 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 23:18:19,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 23:18:19,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 23:18:19,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 23:18:19,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 23:18:19,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 23:18:19,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 23:18:19,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 23:18:19,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 23:18:19,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 23:18:19,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 23:18:19,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 23:18:19,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 23:18:19,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 23:18:19,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 23:18:19,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 23:18:19,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 23:18:19,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 23:18:19,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 23:18:19,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 23:18:19,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 23:18:19,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 23:18:19,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 23:18:19,323 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 23:18:19,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 23:18:19,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 23:18:19,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 23:18:19,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 23:18:19,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 23:18:19,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 23:18:19,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:18:19,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:18:19,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:18:19,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:18:19,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:18:19,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:18:19,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:18:19,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:18:19,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:18:19,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:18:19,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:18:19,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 23:18:19,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:18:19,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:18:19,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:18:19,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:18:19,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:18:19,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:18:19,362 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:18:19,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:18:19,363 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:18:19,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 23:18:19,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:18:19,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:18:19,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:18:19,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:18:19,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:18:19,364 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:18:19,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:18:19,364 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:18:19,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:18:19,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:18:19,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:18:19,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:18:19,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:18:19,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:18:19,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:18:19,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:18:19,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 23:18:19,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 23:18:19,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:18:19,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:18:19,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30408d7207b57838e2c50a4f8ea35b606de13b17 [2021-08-25 23:18:19,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:18:19,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:18:19,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:18:19,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:18:19,706 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:18:19,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_net_1.c [2021-08-25 23:18:19,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6c7ac23d/8771670e03e540b49623e6735826ed10/FLAGea2a07852 [2021-08-25 23:18:21,138 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:18:21,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_net_1.c [2021-08-25 23:18:21,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6c7ac23d/8771670e03e540b49623e6735826ed10/FLAGea2a07852 [2021-08-25 23:18:21,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6c7ac23d/8771670e03e540b49623e6735826ed10 [2021-08-25 23:18:21,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:18:21,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:18:21,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:18:21,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:18:21,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:18:21,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:18:21" (1/1) ... [2021-08-25 23:18:21,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fe4bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:21, skipping insertion in model container [2021-08-25 23:18:21,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:18:21" (1/1) ... [2021-08-25 23:18:21,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:18:21,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:18:23,304 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_net_1.c[2349407,2349420] [2021-08-25 23:18:23,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:18:23,364 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:18:24,040 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_net_1.c[2349407,2349420] [2021-08-25 23:18:24,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:18:24,088 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:18:24,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24 WrapperNode [2021-08-25 23:18:24,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:18:24,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:18:24,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:18:24,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:18:24,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:24,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:25,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:18:25,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:18:25,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:18:25,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:18:25,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:25,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:25,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:25,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:25,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:25,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:25,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:25,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:18:25,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:18:25,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:18:25,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:18:25,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (1/1) ... [2021-08-25 23:18:25,982 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:18:25,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:18:26,002 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) [2021-08-25 23:18:26,031 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 [2021-08-25 23:18:26,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:18:26,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:18:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 23:18:26,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:18:49,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:18:49,718 INFO L299 CfgBuilder]: Removed 1134 assume(true) statements. [2021-08-25 23:18:49,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:18:49 BoogieIcfgContainer [2021-08-25 23:18:49,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:18:49,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:18:49,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:18:49,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:18:49,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:18:21" (1/3) ... [2021-08-25 23:18:49,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ddb001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:18:49, skipping insertion in model container [2021-08-25 23:18:49,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:18:24" (2/3) ... [2021-08-25 23:18:49,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ddb001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:18:49, skipping insertion in model container [2021-08-25 23:18:49,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:18:49" (3/3) ... [2021-08-25 23:18:49,736 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_net_1.c [2021-08-25 23:18:49,740 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:18:49,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:18:49,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:18:49,821 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-25 23:18:49,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:18:49,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 9211 states, 9209 states have (on average 1.999457052883049) internal successors, (18413), 9210 states have internal predecessors, (18413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-25 23:18:49,959 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:49,960 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:49,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:49,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:49,965 INFO L82 PathProgramCache]: Analyzing trace with hash 352619045, now seen corresponding path program 1 times [2021-08-25 23:18:49,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:49,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563918142] [2021-08-25 23:18:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:49,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:18:50,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:50,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563918142] [2021-08-25 23:18:50,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563918142] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:50,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:50,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 23:18:50,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534444457] [2021-08-25 23:18:50,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:18:50,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:50,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:18:50,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:18:50,244 INFO L87 Difference]: Start difference. First operand has 9211 states, 9209 states have (on average 1.999457052883049) internal successors, (18413), 9210 states have internal predecessors, (18413), 0 states have call successors, (0), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:50,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:50,462 INFO L93 Difference]: Finished difference Result 17698 states and 35380 transitions. [2021-08-25 23:18:50,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:18:50,463 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-08-25 23:18:50,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:50,519 INFO L225 Difference]: With dead ends: 17698 [2021-08-25 23:18:50,520 INFO L226 Difference]: Without dead ends: 8280 [2021-08-25 23:18:50,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:18:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2021-08-25 23:18:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8280. [2021-08-25 23:18:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8280 states, 8279 states have (on average 1.5698755888392317) internal successors, (12997), 8279 states have internal predecessors, (12997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:50,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8280 states to 8280 states and 12997 transitions. [2021-08-25 23:18:50,807 INFO L78 Accepts]: Start accepts. Automaton has 8280 states and 12997 transitions. Word has length 9 [2021-08-25 23:18:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:50,809 INFO L470 AbstractCegarLoop]: Abstraction has 8280 states and 12997 transitions. [2021-08-25 23:18:50,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8280 states and 12997 transitions. [2021-08-25 23:18:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-25 23:18:50,811 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:50,811 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:50,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 23:18:50,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:50,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:50,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1422650027, now seen corresponding path program 1 times [2021-08-25 23:18:50,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:50,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296363151] [2021-08-25 23:18:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:50,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:18:50,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:50,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296363151] [2021-08-25 23:18:50,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296363151] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:50,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:50,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:50,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120380148] [2021-08-25 23:18:50,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:50,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:50,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:50,993 INFO L87 Difference]: Start difference. First operand 8280 states and 12997 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:53,945 INFO L93 Difference]: Finished difference Result 16561 states and 25996 transitions. [2021-08-25 23:18:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:18:53,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-08-25 23:18:53,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:53,976 INFO L225 Difference]: With dead ends: 16561 [2021-08-25 23:18:53,976 INFO L226 Difference]: Without dead ends: 8283 [2021-08-25 23:18:53,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8283 states. [2021-08-25 23:18:54,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8283 to 8283. [2021-08-25 23:18:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8283 states, 8282 states have (on average 1.569669162038155) internal successors, (13000), 8282 states have internal predecessors, (13000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8283 states to 8283 states and 13000 transitions. [2021-08-25 23:18:54,164 INFO L78 Accepts]: Start accepts. Automaton has 8283 states and 13000 transitions. Word has length 10 [2021-08-25 23:18:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:54,165 INFO L470 AbstractCegarLoop]: Abstraction has 8283 states and 13000 transitions. [2021-08-25 23:18:54,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 8283 states and 13000 transitions. [2021-08-25 23:18:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-25 23:18:54,167 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:54,167 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:54,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 23:18:54,168 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:54,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:54,169 INFO L82 PathProgramCache]: Analyzing trace with hash 658080264, now seen corresponding path program 1 times [2021-08-25 23:18:54,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:54,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76873779] [2021-08-25 23:18:54,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:54,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:18:54,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:54,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76873779] [2021-08-25 23:18:54,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76873779] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:54,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:54,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:54,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849548980] [2021-08-25 23:18:54,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:54,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:54,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:54,316 INFO L87 Difference]: Start difference. First operand 8283 states and 13000 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:56,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:18:56,831 INFO L93 Difference]: Finished difference Result 16569 states and 26005 transitions. [2021-08-25 23:18:56,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:18:56,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-08-25 23:18:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:18:56,867 INFO L225 Difference]: With dead ends: 16569 [2021-08-25 23:18:56,868 INFO L226 Difference]: Without dead ends: 8289 [2021-08-25 23:18:56,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:56,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8289 states. [2021-08-25 23:18:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8289 to 8287. [2021-08-25 23:18:57,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8287 states, 8286 states have (on average 1.5693941588221096) internal successors, (13004), 8286 states have internal predecessors, (13004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8287 states to 8287 states and 13004 transitions. [2021-08-25 23:18:57,047 INFO L78 Accepts]: Start accepts. Automaton has 8287 states and 13004 transitions. Word has length 15 [2021-08-25 23:18:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:18:57,048 INFO L470 AbstractCegarLoop]: Abstraction has 8287 states and 13004 transitions. [2021-08-25 23:18:57,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:18:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 8287 states and 13004 transitions. [2021-08-25 23:18:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-25 23:18:57,049 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:18:57,049 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:18:57,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-25 23:18:57,050 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:18:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:18:57,051 INFO L82 PathProgramCache]: Analyzing trace with hash 505082677, now seen corresponding path program 1 times [2021-08-25 23:18:57,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:18:57,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145402931] [2021-08-25 23:18:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:18:57,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:18:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:18:57,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:18:57,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:18:57,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145402931] [2021-08-25 23:18:57,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145402931] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:18:57,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:18:57,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:18:57,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263484437] [2021-08-25 23:18:57,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:18:57,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:18:57,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:18:57,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:18:57,154 INFO L87 Difference]: Start difference. First operand 8287 states and 13004 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:02,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:19:02,229 INFO L93 Difference]: Finished difference Result 16491 states and 25885 transitions. [2021-08-25 23:19:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:19:02,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-08-25 23:19:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:19:02,245 INFO L225 Difference]: With dead ends: 16491 [2021-08-25 23:19:02,245 INFO L226 Difference]: Without dead ends: 8165 [2021-08-25 23:19:02,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8165 states. [2021-08-25 23:19:02,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8165 to 8165. [2021-08-25 23:19:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8165 states, 8164 states have (on average 1.5165360117589417) internal successors, (12381), 8164 states have internal predecessors, (12381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 12381 transitions. [2021-08-25 23:19:02,402 INFO L78 Accepts]: Start accepts. Automaton has 8165 states and 12381 transitions. Word has length 19 [2021-08-25 23:19:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:19:02,403 INFO L470 AbstractCegarLoop]: Abstraction has 8165 states and 12381 transitions. [2021-08-25 23:19:02,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 8165 states and 12381 transitions. [2021-08-25 23:19:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-25 23:19:02,404 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:19:02,404 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:19:02,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 23:19:02,404 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:19:02,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:19:02,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1597993323, now seen corresponding path program 1 times [2021-08-25 23:19:02,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:19:02,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860779435] [2021-08-25 23:19:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:19:02,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:19:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:19:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:19:02,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:19:02,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860779435] [2021-08-25 23:19:02,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860779435] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:19:02,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:19:02,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:19:02,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593994944] [2021-08-25 23:19:02,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:19:02,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:19:02,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:19:02,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:02,485 INFO L87 Difference]: Start difference. First operand 8165 states and 12381 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:19:07,640 INFO L93 Difference]: Finished difference Result 24489 states and 37137 transitions. [2021-08-25 23:19:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:19:07,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-08-25 23:19:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:19:07,670 INFO L225 Difference]: With dead ends: 24489 [2021-08-25 23:19:07,670 INFO L226 Difference]: Without dead ends: 16277 [2021-08-25 23:19:07,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16277 states. [2021-08-25 23:19:07,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16277 to 14963. [2021-08-25 23:19:07,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14963 states, 14962 states have (on average 1.5566100788664616) internal successors, (23290), 14962 states have internal predecessors, (23290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:07,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14963 states to 14963 states and 23290 transitions. [2021-08-25 23:19:07,946 INFO L78 Accepts]: Start accepts. Automaton has 14963 states and 23290 transitions. Word has length 23 [2021-08-25 23:19:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:19:07,948 INFO L470 AbstractCegarLoop]: Abstraction has 14963 states and 23290 transitions. [2021-08-25 23:19:07,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 14963 states and 23290 transitions. [2021-08-25 23:19:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-25 23:19:07,950 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:19:07,950 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:19:07,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-25 23:19:07,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:19:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:19:07,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2046252058, now seen corresponding path program 1 times [2021-08-25 23:19:07,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:19:07,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383091626] [2021-08-25 23:19:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:19:07,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:19:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:19:08,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:19:08,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:19:08,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383091626] [2021-08-25 23:19:08,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383091626] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:19:08,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:19:08,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:19:08,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087156396] [2021-08-25 23:19:08,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:19:08,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:19:08,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:19:08,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:08,062 INFO L87 Difference]: Start difference. First operand 14963 states and 23290 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:16,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:19:16,118 INFO L93 Difference]: Finished difference Result 37763 states and 58560 transitions. [2021-08-25 23:19:16,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:19:16,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-08-25 23:19:16,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:19:16,174 INFO L225 Difference]: With dead ends: 37763 [2021-08-25 23:19:16,175 INFO L226 Difference]: Without dead ends: 22521 [2021-08-25 23:19:16,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:16,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22521 states. [2021-08-25 23:19:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22521 to 21281. [2021-08-25 23:19:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21281 states, 21280 states have (on average 1.5518796992481203) internal successors, (33024), 21280 states have internal predecessors, (33024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21281 states to 21281 states and 33024 transitions. [2021-08-25 23:19:16,569 INFO L78 Accepts]: Start accepts. Automaton has 21281 states and 33024 transitions. Word has length 25 [2021-08-25 23:19:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:19:16,569 INFO L470 AbstractCegarLoop]: Abstraction has 21281 states and 33024 transitions. [2021-08-25 23:19:16,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 21281 states and 33024 transitions. [2021-08-25 23:19:16,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-25 23:19:16,570 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:19:16,571 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-25 23:19:16,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-25 23:19:16,571 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:19:16,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:19:16,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1701022621, now seen corresponding path program 1 times [2021-08-25 23:19:16,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:19:16,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981338301] [2021-08-25 23:19:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:19:16,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:19:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:19:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:19:16,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:19:16,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981338301] [2021-08-25 23:19:16,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981338301] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:19:16,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:19:16,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:19:16,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974619235] [2021-08-25 23:19:16,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:19:16,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:19:16,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:19:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:16,673 INFO L87 Difference]: Start difference. First operand 21281 states and 33024 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:25,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:19:25,537 INFO L93 Difference]: Finished difference Result 63807 states and 99006 transitions. [2021-08-25 23:19:25,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:19:25,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-08-25 23:19:25,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:19:25,617 INFO L225 Difference]: With dead ends: 63807 [2021-08-25 23:19:25,617 INFO L226 Difference]: Without dead ends: 42529 [2021-08-25 23:19:25,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42529 states. [2021-08-25 23:19:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42529 to 40445. [2021-08-25 23:19:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40445 states, 40444 states have (on average 1.5746464246859855) internal successors, (63685), 40444 states have internal predecessors, (63685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40445 states to 40445 states and 63685 transitions. [2021-08-25 23:19:26,263 INFO L78 Accepts]: Start accepts. Automaton has 40445 states and 63685 transitions. Word has length 30 [2021-08-25 23:19:26,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:19:26,263 INFO L470 AbstractCegarLoop]: Abstraction has 40445 states and 63685 transitions. [2021-08-25 23:19:26,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:26,264 INFO L276 IsEmpty]: Start isEmpty. Operand 40445 states and 63685 transitions. [2021-08-25 23:19:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-25 23:19:26,267 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:19:26,267 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:19:26,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-25 23:19:26,268 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:19:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:19:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash 561792454, now seen corresponding path program 1 times [2021-08-25 23:19:26,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:19:26,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792239786] [2021-08-25 23:19:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:19:26,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:19:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:19:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:19:26,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:19:26,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792239786] [2021-08-25 23:19:26,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792239786] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:19:26,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:19:26,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:19:26,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30422781] [2021-08-25 23:19:26,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:19:26,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:19:26,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:19:26,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:26,366 INFO L87 Difference]: Start difference. First operand 40445 states and 63685 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:28,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:19:28,569 INFO L93 Difference]: Finished difference Result 79526 states and 125194 transitions. [2021-08-25 23:19:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:19:28,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 36 [2021-08-25 23:19:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:19:28,626 INFO L225 Difference]: With dead ends: 79526 [2021-08-25 23:19:28,626 INFO L226 Difference]: Without dead ends: 39084 [2021-08-25 23:19:28,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:28,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39084 states. [2021-08-25 23:19:29,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39084 to 39082. [2021-08-25 23:19:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39082 states, 39081 states have (on average 1.573475601954914) internal successors, (61493), 39081 states have internal predecessors, (61493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39082 states to 39082 states and 61493 transitions. [2021-08-25 23:19:29,398 INFO L78 Accepts]: Start accepts. Automaton has 39082 states and 61493 transitions. Word has length 36 [2021-08-25 23:19:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:19:29,399 INFO L470 AbstractCegarLoop]: Abstraction has 39082 states and 61493 transitions. [2021-08-25 23:19:29,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 39082 states and 61493 transitions. [2021-08-25 23:19:29,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-25 23:19:29,400 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:19:29,400 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-25 23:19:29,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-25 23:19:29,401 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:19:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:19:29,401 INFO L82 PathProgramCache]: Analyzing trace with hash -421428809, now seen corresponding path program 1 times [2021-08-25 23:19:29,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:19:29,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153357511] [2021-08-25 23:19:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:19:29,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:19:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:19:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:19:29,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:19:29,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153357511] [2021-08-25 23:19:29,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153357511] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:19:29,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:19:29,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:19:29,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258049211] [2021-08-25 23:19:29,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:19:29,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:19:29,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:19:29,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:29,473 INFO L87 Difference]: Start difference. First operand 39082 states and 61493 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:34,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:19:34,780 INFO L93 Difference]: Finished difference Result 104907 states and 165289 transitions. [2021-08-25 23:19:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:19:34,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-08-25 23:19:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:19:34,874 INFO L225 Difference]: With dead ends: 104907 [2021-08-25 23:19:34,874 INFO L226 Difference]: Without dead ends: 65994 [2021-08-25 23:19:34,913 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:34,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65994 states. [2021-08-25 23:19:35,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65994 to 64334. [2021-08-25 23:19:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64334 states, 64333 states have (on average 1.5843501779801967) internal successors, (101926), 64333 states have internal predecessors, (101926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:35,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64334 states to 64334 states and 101926 transitions. [2021-08-25 23:19:35,891 INFO L78 Accepts]: Start accepts. Automaton has 64334 states and 101926 transitions. Word has length 39 [2021-08-25 23:19:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:19:35,892 INFO L470 AbstractCegarLoop]: Abstraction has 64334 states and 101926 transitions. [2021-08-25 23:19:35,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 64334 states and 101926 transitions. [2021-08-25 23:19:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-08-25 23:19:35,893 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:19:35,893 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-08-25 23:19:35,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-25 23:19:35,894 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:19:35,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:19:35,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1116669619, now seen corresponding path program 1 times [2021-08-25 23:19:35,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:19:35,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998765462] [2021-08-25 23:19:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:19:35,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:19:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:19:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:19:35,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:19:35,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998765462] [2021-08-25 23:19:35,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998765462] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:19:35,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:19:35,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:19:35,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202649219] [2021-08-25 23:19:35,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:19:35,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:19:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:19:35,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:35,962 INFO L87 Difference]: Start difference. First operand 64334 states and 101926 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:38,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:19:38,588 INFO L93 Difference]: Finished difference Result 128505 states and 203588 transitions. [2021-08-25 23:19:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:19:38,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 43 [2021-08-25 23:19:38,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:19:38,681 INFO L225 Difference]: With dead ends: 128505 [2021-08-25 23:19:38,681 INFO L226 Difference]: Without dead ends: 64386 [2021-08-25 23:19:38,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:38,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64386 states. [2021-08-25 23:19:39,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64386 to 64384. [2021-08-25 23:19:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64384 states, 64383 states have (on average 1.5838963701598248) internal successors, (101976), 64383 states have internal predecessors, (101976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64384 states to 64384 states and 101976 transitions. [2021-08-25 23:19:39,770 INFO L78 Accepts]: Start accepts. Automaton has 64384 states and 101976 transitions. Word has length 43 [2021-08-25 23:19:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:19:39,771 INFO L470 AbstractCegarLoop]: Abstraction has 64384 states and 101976 transitions. [2021-08-25 23:19:39,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 64384 states and 101976 transitions. [2021-08-25 23:19:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-25 23:19:39,773 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:19:39,773 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-08-25 23:19:39,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-25 23:19:39,774 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:19:39,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:19:39,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1299656225, now seen corresponding path program 1 times [2021-08-25 23:19:39,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:19:39,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966116357] [2021-08-25 23:19:39,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:19:39,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:19:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:19:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:19:39,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:19:39,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966116357] [2021-08-25 23:19:39,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966116357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:19:39,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:19:39,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 23:19:39,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894264043] [2021-08-25 23:19:39,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 23:19:39,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:19:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 23:19:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 23:19:39,949 INFO L87 Difference]: Start difference. First operand 64384 states and 101976 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:19:49,445 INFO L93 Difference]: Finished difference Result 123103 states and 194868 transitions. [2021-08-25 23:19:49,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 23:19:49,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-25 23:19:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:19:49,546 INFO L225 Difference]: With dead ends: 123103 [2021-08-25 23:19:49,546 INFO L226 Difference]: Without dead ends: 64644 [2021-08-25 23:19:49,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 23:19:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64644 states. [2021-08-25 23:19:50,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64644 to 62168. [2021-08-25 23:19:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62168 states, 62167 states have (on average 1.562420576833368) internal successors, (97131), 62167 states have internal predecessors, (97131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62168 states to 62168 states and 97131 transitions. [2021-08-25 23:19:50,546 INFO L78 Accepts]: Start accepts. Automaton has 62168 states and 97131 transitions. Word has length 52 [2021-08-25 23:19:50,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:19:50,546 INFO L470 AbstractCegarLoop]: Abstraction has 62168 states and 97131 transitions. [2021-08-25 23:19:50,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:50,546 INFO L276 IsEmpty]: Start isEmpty. Operand 62168 states and 97131 transitions. [2021-08-25 23:19:50,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-25 23:19:50,547 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:19:50,548 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-08-25 23:19:50,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-25 23:19:50,548 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:19:50,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:19:50,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1610447069, now seen corresponding path program 1 times [2021-08-25 23:19:50,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:19:50,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816877796] [2021-08-25 23:19:50,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:19:50,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:19:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:19:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:19:50,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:19:50,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816877796] [2021-08-25 23:19:50,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816877796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:19:50,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:19:50,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:19:50,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015580513] [2021-08-25 23:19:50,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:19:50,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:19:50,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:19:50,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:50,645 INFO L87 Difference]: Start difference. First operand 62168 states and 97131 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:53,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:19:53,063 INFO L93 Difference]: Finished difference Result 124183 states and 194018 transitions. [2021-08-25 23:19:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:19:53,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-08-25 23:19:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:19:53,154 INFO L225 Difference]: With dead ends: 124183 [2021-08-25 23:19:53,154 INFO L226 Difference]: Without dead ends: 62230 [2021-08-25 23:19:53,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:53,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62230 states. [2021-08-25 23:19:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62230 to 62228. [2021-08-25 23:19:54,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62228 states, 62227 states have (on average 1.5618782843460235) internal successors, (97191), 62227 states have internal predecessors, (97191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62228 states to 62228 states and 97191 transitions. [2021-08-25 23:19:54,176 INFO L78 Accepts]: Start accepts. Automaton has 62228 states and 97191 transitions. Word has length 53 [2021-08-25 23:19:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:19:54,176 INFO L470 AbstractCegarLoop]: Abstraction has 62228 states and 97191 transitions. [2021-08-25 23:19:54,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:19:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 62228 states and 97191 transitions. [2021-08-25 23:19:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-25 23:19:54,177 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:19:54,177 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-08-25 23:19:54,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-25 23:19:54,178 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:19:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:19:54,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2089054241, now seen corresponding path program 1 times [2021-08-25 23:19:54,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:19:54,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781098385] [2021-08-25 23:19:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:19:54,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:19:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:19:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:19:54,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:19:54,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781098385] [2021-08-25 23:19:54,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781098385] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:19:54,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:19:54,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:19:54,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916222051] [2021-08-25 23:19:54,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:19:54,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:19:54,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:19:54,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:19:54,260 INFO L87 Difference]: Start difference. First operand 62228 states and 97191 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:00,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:00,031 INFO L93 Difference]: Finished difference Result 113440 states and 176621 transitions. [2021-08-25 23:20:00,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:00,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 58 [2021-08-25 23:20:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:00,121 INFO L225 Difference]: With dead ends: 113440 [2021-08-25 23:20:00,121 INFO L226 Difference]: Without dead ends: 63214 [2021-08-25 23:20:00,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63214 states. [2021-08-25 23:20:00,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63214 to 61972. [2021-08-25 23:20:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61972 states, 61971 states have (on average 1.5518064901324813) internal successors, (96167), 61971 states have internal predecessors, (96167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61972 states to 61972 states and 96167 transitions. [2021-08-25 23:20:01,141 INFO L78 Accepts]: Start accepts. Automaton has 61972 states and 96167 transitions. Word has length 58 [2021-08-25 23:20:01,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:01,153 INFO L470 AbstractCegarLoop]: Abstraction has 61972 states and 96167 transitions. [2021-08-25 23:20:01,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand 61972 states and 96167 transitions. [2021-08-25 23:20:01,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-08-25 23:20:01,155 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:01,155 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-25 23:20:01,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-25 23:20:01,155 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:01,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1311774324, now seen corresponding path program 1 times [2021-08-25 23:20:01,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:01,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982182080] [2021-08-25 23:20:01,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:01,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:20:01,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:01,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982182080] [2021-08-25 23:20:01,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982182080] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:01,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:01,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:01,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523610451] [2021-08-25 23:20:01,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:01,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:01,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:01,266 INFO L87 Difference]: Start difference. First operand 61972 states and 96167 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:08,517 INFO L93 Difference]: Finished difference Result 126061 states and 194484 transitions. [2021-08-25 23:20:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:08,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-08-25 23:20:08,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:08,601 INFO L225 Difference]: With dead ends: 126061 [2021-08-25 23:20:08,601 INFO L226 Difference]: Without dead ends: 64264 [2021-08-25 23:20:08,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64264 states. [2021-08-25 23:20:09,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64264 to 61650. [2021-08-25 23:20:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61650 states, 61649 states have (on average 1.548265178672809) internal successors, (95449), 61649 states have internal predecessors, (95449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:09,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61650 states to 61650 states and 95449 transitions. [2021-08-25 23:20:09,455 INFO L78 Accepts]: Start accepts. Automaton has 61650 states and 95449 transitions. Word has length 64 [2021-08-25 23:20:09,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:09,455 INFO L470 AbstractCegarLoop]: Abstraction has 61650 states and 95449 transitions. [2021-08-25 23:20:09,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 61650 states and 95449 transitions. [2021-08-25 23:20:09,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-08-25 23:20:09,458 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:09,458 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-25 23:20:09,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-25 23:20:09,459 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:09,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1468274043, now seen corresponding path program 1 times [2021-08-25 23:20:09,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:09,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999987441] [2021-08-25 23:20:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:09,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:20:09,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:09,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999987441] [2021-08-25 23:20:09,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999987441] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:09,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:09,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:09,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679394453] [2021-08-25 23:20:09,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:09,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:09,563 INFO L87 Difference]: Start difference. First operand 61650 states and 95449 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:17,258 INFO L93 Difference]: Finished difference Result 88764 states and 136295 transitions. [2021-08-25 23:20:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:17,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-08-25 23:20:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:17,354 INFO L225 Difference]: With dead ends: 88764 [2021-08-25 23:20:17,354 INFO L226 Difference]: Without dead ends: 62932 [2021-08-25 23:20:17,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62932 states. [2021-08-25 23:20:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62932 to 61646. [2021-08-25 23:20:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61646 states, 61645 states have (on average 1.546970557222808) internal successors, (95363), 61645 states have internal predecessors, (95363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61646 states to 61646 states and 95363 transitions. [2021-08-25 23:20:18,141 INFO L78 Accepts]: Start accepts. Automaton has 61646 states and 95363 transitions. Word has length 74 [2021-08-25 23:20:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:18,142 INFO L470 AbstractCegarLoop]: Abstraction has 61646 states and 95363 transitions. [2021-08-25 23:20:18,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:18,142 INFO L276 IsEmpty]: Start isEmpty. Operand 61646 states and 95363 transitions. [2021-08-25 23:20:18,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-08-25 23:20:18,144 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:18,144 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-08-25 23:20:18,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-25 23:20:18,144 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:18,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:18,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1736777499, now seen corresponding path program 1 times [2021-08-25 23:20:18,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:18,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467323744] [2021-08-25 23:20:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:18,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:20:18,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:18,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467323744] [2021-08-25 23:20:18,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467323744] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:18,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:18,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:18,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297454039] [2021-08-25 23:20:18,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:18,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:18,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:18,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:18,237 INFO L87 Difference]: Start difference. First operand 61646 states and 95363 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:20,665 INFO L93 Difference]: Finished difference Result 119086 states and 184218 transitions. [2021-08-25 23:20:20,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:20,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 81 [2021-08-25 23:20:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:20,757 INFO L225 Difference]: With dead ends: 119086 [2021-08-25 23:20:20,757 INFO L226 Difference]: Without dead ends: 57643 [2021-08-25 23:20:20,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:20,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57643 states. [2021-08-25 23:20:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57643 to 57641. [2021-08-25 23:20:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57641 states, 57640 states have (on average 1.5460444136016656) internal successors, (89114), 57640 states have internal predecessors, (89114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:21,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57641 states to 57641 states and 89114 transitions. [2021-08-25 23:20:21,569 INFO L78 Accepts]: Start accepts. Automaton has 57641 states and 89114 transitions. Word has length 81 [2021-08-25 23:20:21,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:21,569 INFO L470 AbstractCegarLoop]: Abstraction has 57641 states and 89114 transitions. [2021-08-25 23:20:21,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:21,569 INFO L276 IsEmpty]: Start isEmpty. Operand 57641 states and 89114 transitions. [2021-08-25 23:20:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-08-25 23:20:21,571 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:21,571 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-08-25 23:20:21,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-25 23:20:21,571 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:21,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:21,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1749163296, now seen corresponding path program 1 times [2021-08-25 23:20:21,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:21,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512349910] [2021-08-25 23:20:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:21,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:20:21,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:21,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512349910] [2021-08-25 23:20:21,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512349910] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:21,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:21,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:21,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710045285] [2021-08-25 23:20:21,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:21,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:21,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:21,653 INFO L87 Difference]: Start difference. First operand 57641 states and 89114 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:23,915 INFO L93 Difference]: Finished difference Result 114966 states and 177748 transitions. [2021-08-25 23:20:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:23,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 84 [2021-08-25 23:20:23,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:23,994 INFO L225 Difference]: With dead ends: 114966 [2021-08-25 23:20:23,994 INFO L226 Difference]: Without dead ends: 57723 [2021-08-25 23:20:24,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57723 states. [2021-08-25 23:20:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57723 to 57721. [2021-08-25 23:20:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57721 states, 57720 states have (on average 1.5452875952875953) internal successors, (89194), 57720 states have internal predecessors, (89194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57721 states to 57721 states and 89194 transitions. [2021-08-25 23:20:24,798 INFO L78 Accepts]: Start accepts. Automaton has 57721 states and 89194 transitions. Word has length 84 [2021-08-25 23:20:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:24,799 INFO L470 AbstractCegarLoop]: Abstraction has 57721 states and 89194 transitions. [2021-08-25 23:20:24,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 57721 states and 89194 transitions. [2021-08-25 23:20:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-25 23:20:24,800 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:24,800 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-08-25 23:20:24,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-25 23:20:24,800 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:24,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:24,801 INFO L82 PathProgramCache]: Analyzing trace with hash 668432337, now seen corresponding path program 1 times [2021-08-25 23:20:24,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:24,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821401655] [2021-08-25 23:20:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:24,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:20:24,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:24,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821401655] [2021-08-25 23:20:24,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821401655] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:24,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:24,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 23:20:24,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242561822] [2021-08-25 23:20:24,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 23:20:24,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 23:20:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 23:20:24,938 INFO L87 Difference]: Start difference. First operand 57721 states and 89194 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:33,589 INFO L93 Difference]: Finished difference Result 82679 states and 126797 transitions. [2021-08-25 23:20:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 23:20:33,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-08-25 23:20:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:33,631 INFO L225 Difference]: With dead ends: 82679 [2021-08-25 23:20:33,631 INFO L226 Difference]: Without dead ends: 36250 [2021-08-25 23:20:33,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 23:20:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36250 states. [2021-08-25 23:20:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36250 to 35099. [2021-08-25 23:20:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35099 states, 35098 states have (on average 1.520969855832241) internal successors, (53383), 35098 states have internal predecessors, (53383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35099 states to 35099 states and 53383 transitions. [2021-08-25 23:20:34,118 INFO L78 Accepts]: Start accepts. Automaton has 35099 states and 53383 transitions. Word has length 88 [2021-08-25 23:20:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:34,118 INFO L470 AbstractCegarLoop]: Abstraction has 35099 states and 53383 transitions. [2021-08-25 23:20:34,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 35099 states and 53383 transitions. [2021-08-25 23:20:34,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-25 23:20:34,120 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:34,120 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-08-25 23:20:34,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-25 23:20:34,120 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:34,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:34,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1526878815, now seen corresponding path program 1 times [2021-08-25 23:20:34,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:34,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936232481] [2021-08-25 23:20:34,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:34,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:20:34,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:34,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936232481] [2021-08-25 23:20:34,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936232481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:34,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:34,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 23:20:34,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744698296] [2021-08-25 23:20:34,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 23:20:34,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 23:20:34,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 23:20:34,252 INFO L87 Difference]: Start difference. First operand 35099 states and 53383 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:42,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:42,657 INFO L93 Difference]: Finished difference Result 48617 states and 72988 transitions. [2021-08-25 23:20:42,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 23:20:42,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-08-25 23:20:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:42,682 INFO L225 Difference]: With dead ends: 48617 [2021-08-25 23:20:42,682 INFO L226 Difference]: Without dead ends: 24950 [2021-08-25 23:20:42,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 23:20:42,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24950 states. [2021-08-25 23:20:42,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24950 to 23799. [2021-08-25 23:20:42,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23799 states, 23798 states have (on average 1.5068913354063367) internal successors, (35861), 23798 states have internal predecessors, (35861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23799 states to 23799 states and 35861 transitions. [2021-08-25 23:20:42,902 INFO L78 Accepts]: Start accepts. Automaton has 23799 states and 35861 transitions. Word has length 90 [2021-08-25 23:20:42,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:42,903 INFO L470 AbstractCegarLoop]: Abstraction has 23799 states and 35861 transitions. [2021-08-25 23:20:42,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 23799 states and 35861 transitions. [2021-08-25 23:20:42,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-08-25 23:20:42,904 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:42,904 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-25 23:20:42,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-25 23:20:42,905 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:42,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:42,905 INFO L82 PathProgramCache]: Analyzing trace with hash -447066393, now seen corresponding path program 1 times [2021-08-25 23:20:42,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:42,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293288121] [2021-08-25 23:20:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:42,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:20:42,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:42,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293288121] [2021-08-25 23:20:42,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293288121] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:42,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:42,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:42,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123404474] [2021-08-25 23:20:42,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:42,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:42,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:42,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:42,977 INFO L87 Difference]: Start difference. First operand 23799 states and 35861 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:44,807 INFO L93 Difference]: Finished difference Result 24574 states and 36974 transitions. [2021-08-25 23:20:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:44,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-08-25 23:20:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:44,835 INFO L225 Difference]: With dead ends: 24574 [2021-08-25 23:20:44,835 INFO L226 Difference]: Without dead ends: 24572 [2021-08-25 23:20:44,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24572 states. [2021-08-25 23:20:45,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24572 to 24570. [2021-08-25 23:20:45,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24570 states, 24569 states have (on average 1.5044975375473157) internal successors, (36964), 24569 states have internal predecessors, (36964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24570 states to 24570 states and 36964 transitions. [2021-08-25 23:20:45,070 INFO L78 Accepts]: Start accepts. Automaton has 24570 states and 36964 transitions. Word has length 98 [2021-08-25 23:20:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:45,070 INFO L470 AbstractCegarLoop]: Abstraction has 24570 states and 36964 transitions. [2021-08-25 23:20:45,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:45,070 INFO L276 IsEmpty]: Start isEmpty. Operand 24570 states and 36964 transitions. [2021-08-25 23:20:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-08-25 23:20:45,072 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:45,072 INFO L512 BasicCegarLoop]: trace histogram [3, 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] [2021-08-25 23:20:45,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-25 23:20:45,072 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:45,073 INFO L82 PathProgramCache]: Analyzing trace with hash -930949646, now seen corresponding path program 1 times [2021-08-25 23:20:45,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:45,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882174858] [2021-08-25 23:20:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:45,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-25 23:20:45,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:45,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882174858] [2021-08-25 23:20:45,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882174858] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:45,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:45,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:45,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999022376] [2021-08-25 23:20:45,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:45,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:45,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:45,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:45,164 INFO L87 Difference]: Start difference. First operand 24570 states and 36964 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:46,852 INFO L93 Difference]: Finished difference Result 42966 states and 64448 transitions. [2021-08-25 23:20:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 114 [2021-08-25 23:20:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:46,875 INFO L225 Difference]: With dead ends: 42966 [2021-08-25 23:20:46,875 INFO L226 Difference]: Without dead ends: 19565 [2021-08-25 23:20:46,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:46,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19565 states. [2021-08-25 23:20:47,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19565 to 19563. [2021-08-25 23:20:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19563 states, 19562 states have (on average 1.4900828136182394) internal successors, (29149), 19562 states have internal predecessors, (29149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19563 states to 19563 states and 29149 transitions. [2021-08-25 23:20:47,084 INFO L78 Accepts]: Start accepts. Automaton has 19563 states and 29149 transitions. Word has length 114 [2021-08-25 23:20:47,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:47,084 INFO L470 AbstractCegarLoop]: Abstraction has 19563 states and 29149 transitions. [2021-08-25 23:20:47,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 19563 states and 29149 transitions. [2021-08-25 23:20:47,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-08-25 23:20:47,087 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:47,087 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:20:47,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-25 23:20:47,088 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:47,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1991972653, now seen corresponding path program 1 times [2021-08-25 23:20:47,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:47,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239868001] [2021-08-25 23:20:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:47,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:47,174 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-25 23:20:47,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:47,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239868001] [2021-08-25 23:20:47,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239868001] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:47,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:47,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:47,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973984735] [2021-08-25 23:20:47,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:47,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:47,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:47,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:47,177 INFO L87 Difference]: Start difference. First operand 19563 states and 29149 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:48,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:48,748 INFO L93 Difference]: Finished difference Result 36148 states and 53944 transitions. [2021-08-25 23:20:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:48,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 136 [2021-08-25 23:20:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:48,766 INFO L225 Difference]: With dead ends: 36148 [2021-08-25 23:20:48,767 INFO L226 Difference]: Without dead ends: 17944 [2021-08-25 23:20:48,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17944 states. [2021-08-25 23:20:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17944 to 17942. [2021-08-25 23:20:48,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17942 states, 17941 states have (on average 1.4900507218103785) internal successors, (26733), 17941 states have internal predecessors, (26733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:48,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17942 states to 17942 states and 26733 transitions. [2021-08-25 23:20:48,958 INFO L78 Accepts]: Start accepts. Automaton has 17942 states and 26733 transitions. Word has length 136 [2021-08-25 23:20:48,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:48,958 INFO L470 AbstractCegarLoop]: Abstraction has 17942 states and 26733 transitions. [2021-08-25 23:20:48,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:48,958 INFO L276 IsEmpty]: Start isEmpty. Operand 17942 states and 26733 transitions. [2021-08-25 23:20:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-08-25 23:20:48,961 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:48,961 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:20:48,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-25 23:20:48,961 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:48,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1587573456, now seen corresponding path program 1 times [2021-08-25 23:20:48,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:48,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829871263] [2021-08-25 23:20:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:48,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:49,042 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-25 23:20:49,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:49,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829871263] [2021-08-25 23:20:49,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829871263] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:49,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:49,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:49,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980661170] [2021-08-25 23:20:49,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:49,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:49,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:49,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:49,045 INFO L87 Difference]: Start difference. First operand 17942 states and 26733 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:50,428 INFO L93 Difference]: Finished difference Result 29250 states and 43528 transitions. [2021-08-25 23:20:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:50,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 138 [2021-08-25 23:20:50,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:50,448 INFO L225 Difference]: With dead ends: 29250 [2021-08-25 23:20:50,448 INFO L226 Difference]: Without dead ends: 13058 [2021-08-25 23:20:50,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13058 states. [2021-08-25 23:20:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13058 to 13056. [2021-08-25 23:20:50,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13056 states, 13055 states have (on average 1.478207583301417) internal successors, (19298), 13055 states have internal predecessors, (19298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13056 states to 13056 states and 19298 transitions. [2021-08-25 23:20:50,686 INFO L78 Accepts]: Start accepts. Automaton has 13056 states and 19298 transitions. Word has length 138 [2021-08-25 23:20:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:50,687 INFO L470 AbstractCegarLoop]: Abstraction has 13056 states and 19298 transitions. [2021-08-25 23:20:50,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 13056 states and 19298 transitions. [2021-08-25 23:20:50,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-08-25 23:20:50,691 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:50,691 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2021-08-25 23:20:50,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-25 23:20:50,691 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:50,693 INFO L82 PathProgramCache]: Analyzing trace with hash 119023117, now seen corresponding path program 1 times [2021-08-25 23:20:50,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:50,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767917112] [2021-08-25 23:20:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:50,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-25 23:20:50,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:50,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767917112] [2021-08-25 23:20:50,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767917112] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:50,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:50,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:50,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388141960] [2021-08-25 23:20:50,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:50,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:50,797 INFO L87 Difference]: Start difference. First operand 13056 states and 19298 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:52,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:52,358 INFO L93 Difference]: Finished difference Result 23526 states and 34853 transitions. [2021-08-25 23:20:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:52,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 144 [2021-08-25 23:20:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:52,375 INFO L225 Difference]: With dead ends: 23526 [2021-08-25 23:20:52,375 INFO L226 Difference]: Without dead ends: 12415 [2021-08-25 23:20:52,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:52,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12415 states. [2021-08-25 23:20:52,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12415 to 12413. [2021-08-25 23:20:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12413 states, 12412 states have (on average 1.4769577827908476) internal successors, (18332), 12412 states have internal predecessors, (18332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12413 states to 12413 states and 18332 transitions. [2021-08-25 23:20:52,527 INFO L78 Accepts]: Start accepts. Automaton has 12413 states and 18332 transitions. Word has length 144 [2021-08-25 23:20:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:52,528 INFO L470 AbstractCegarLoop]: Abstraction has 12413 states and 18332 transitions. [2021-08-25 23:20:52,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:52,528 INFO L276 IsEmpty]: Start isEmpty. Operand 12413 states and 18332 transitions. [2021-08-25 23:20:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-08-25 23:20:52,540 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:52,541 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2021-08-25 23:20:52,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-25 23:20:52,541 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:52,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:52,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1059270226, now seen corresponding path program 1 times [2021-08-25 23:20:52,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:52,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608019225] [2021-08-25 23:20:52,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:52,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-25 23:20:52,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:52,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608019225] [2021-08-25 23:20:52,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608019225] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:52,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:52,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:52,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436226730] [2021-08-25 23:20:52,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:52,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:52,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:52,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:52,624 INFO L87 Difference]: Start difference. First operand 12413 states and 18332 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:54,021 INFO L93 Difference]: Finished difference Result 22913 states and 33911 transitions. [2021-08-25 23:20:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:54,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 148 [2021-08-25 23:20:54,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:54,036 INFO L225 Difference]: With dead ends: 22913 [2021-08-25 23:20:54,036 INFO L226 Difference]: Without dead ends: 12445 [2021-08-25 23:20:54,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12445 states. [2021-08-25 23:20:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12445 to 12443. [2021-08-25 23:20:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12443 states, 12442 states have (on average 1.4758077479504903) internal successors, (18362), 12442 states have internal predecessors, (18362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12443 states to 12443 states and 18362 transitions. [2021-08-25 23:20:54,175 INFO L78 Accepts]: Start accepts. Automaton has 12443 states and 18362 transitions. Word has length 148 [2021-08-25 23:20:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:54,176 INFO L470 AbstractCegarLoop]: Abstraction has 12443 states and 18362 transitions. [2021-08-25 23:20:54,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 12443 states and 18362 transitions. [2021-08-25 23:20:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-08-25 23:20:54,178 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:54,178 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:20:54,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-25 23:20:54,178 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:54,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:54,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1097377653, now seen corresponding path program 1 times [2021-08-25 23:20:54,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:54,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497114735] [2021-08-25 23:20:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:54,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-25 23:20:54,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:54,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497114735] [2021-08-25 23:20:54,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497114735] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:54,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:54,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:54,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374716648] [2021-08-25 23:20:54,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:54,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:54,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:54,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:54,265 INFO L87 Difference]: Start difference. First operand 12443 states and 18362 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:55,408 INFO L93 Difference]: Finished difference Result 20615 states and 30499 transitions. [2021-08-25 23:20:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:55,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 178 [2021-08-25 23:20:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:55,424 INFO L225 Difference]: With dead ends: 20615 [2021-08-25 23:20:55,424 INFO L226 Difference]: Without dead ends: 10117 [2021-08-25 23:20:55,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:55,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10117 states. [2021-08-25 23:20:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10117 to 10115. [2021-08-25 23:20:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10115 states, 10114 states have (on average 1.4743919319754795) internal successors, (14912), 10114 states have internal predecessors, (14912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10115 states to 10115 states and 14912 transitions. [2021-08-25 23:20:55,536 INFO L78 Accepts]: Start accepts. Automaton has 10115 states and 14912 transitions. Word has length 178 [2021-08-25 23:20:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:55,536 INFO L470 AbstractCegarLoop]: Abstraction has 10115 states and 14912 transitions. [2021-08-25 23:20:55,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 10115 states and 14912 transitions. [2021-08-25 23:20:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-08-25 23:20:55,540 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:55,540 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:20:55,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-25 23:20:55,540 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:55,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:55,541 INFO L82 PathProgramCache]: Analyzing trace with hash -73762474, now seen corresponding path program 1 times [2021-08-25 23:20:55,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:55,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67393197] [2021-08-25 23:20:55,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:55,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:20:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-25 23:20:55,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:20:55,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67393197] [2021-08-25 23:20:55,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67393197] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:20:55,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:20:55,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 23:20:55,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65466862] [2021-08-25 23:20:55,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 23:20:55,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:20:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 23:20:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:55,636 INFO L87 Difference]: Start difference. First operand 10115 states and 14912 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:56,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:20:56,119 INFO L93 Difference]: Finished difference Result 10521 states and 15481 transitions. [2021-08-25 23:20:56,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 23:20:56,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 183 [2021-08-25 23:20:56,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:20:56,122 INFO L225 Difference]: With dead ends: 10521 [2021-08-25 23:20:56,122 INFO L226 Difference]: Without dead ends: 2357 [2021-08-25 23:20:56,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 23:20:56,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2021-08-25 23:20:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2355. [2021-08-25 23:20:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2354 states have (on average 1.4269328802039083) internal successors, (3359), 2354 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3359 transitions. [2021-08-25 23:20:56,144 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3359 transitions. Word has length 183 [2021-08-25 23:20:56,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:20:56,144 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 3359 transitions. [2021-08-25 23:20:56,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:20:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3359 transitions. [2021-08-25 23:20:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-08-25 23:20:56,146 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:20:56,146 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:20:56,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-25 23:20:56,147 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:20:56,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:20:56,147 INFO L82 PathProgramCache]: Analyzing trace with hash -621968245, now seen corresponding path program 1 times [2021-08-25 23:20:56,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:20:56,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373373912] [2021-08-25 23:20:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:20:56,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:20:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:20:56,250 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 23:20:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:20:56,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 23:20:56,485 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 23:20:56,485 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:20:56,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-25 23:20:56,492 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:20:56,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:20:56 BoogieIcfgContainer [2021-08-25 23:20:56,628 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:20:56,629 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:20:56,629 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:20:56,629 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:20:56,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:18:49" (3/4) ... [2021-08-25 23:20:56,631 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 23:20:56,754 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 23:20:56,754 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:20:56,756 INFO L168 Benchmark]: Toolchain (without parser) took 155116.05 ms. Allocated memory was 92.3 MB in the beginning and 9.3 GB in the end (delta: 9.2 GB). Free memory was 40.6 MB in the beginning and 6.1 GB in the end (delta: -6.1 GB). Peak memory consumption was 3.1 GB. Max. memory is 16.1 GB. [2021-08-25 23:20:56,756 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:20:56,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2451.11 ms. Allocated memory was 92.3 MB in the beginning and 601.9 MB in the end (delta: 509.6 MB). Free memory was 40.5 MB in the beginning and 430.2 MB in the end (delta: -389.7 MB). Peak memory consumption was 180.9 MB. Max. memory is 16.1 GB. [2021-08-25 23:20:56,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 931.80 ms. Allocated memory is still 601.9 MB. Free memory was 429.2 MB in the beginning and 352.6 MB in the end (delta: 76.5 MB). Peak memory consumption was 212.9 MB. Max. memory is 16.1 GB. [2021-08-25 23:20:56,757 INFO L168 Benchmark]: Boogie Preprocessor took 948.44 ms. Allocated memory is still 601.9 MB. Free memory was 352.6 MB in the beginning and 270.9 MB in the end (delta: 81.8 MB). Peak memory consumption was 129.0 MB. Max. memory is 16.1 GB. [2021-08-25 23:20:56,757 INFO L168 Benchmark]: RCFGBuilder took 23753.97 ms. Allocated memory was 601.9 MB in the beginning and 3.6 GB in the end (delta: 3.0 GB). Free memory was 270.9 MB in the beginning and 2.8 GB in the end (delta: -2.5 GB). Peak memory consumption was 850.4 MB. Max. memory is 16.1 GB. [2021-08-25 23:20:56,758 INFO L168 Benchmark]: TraceAbstraction took 126898.10 ms. Allocated memory was 3.6 GB in the beginning and 9.3 GB in the end (delta: 5.7 GB). Free memory was 2.8 GB in the beginning and 6.1 GB in the end (delta: -3.3 GB). Peak memory consumption was 2.3 GB. Max. memory is 16.1 GB. [2021-08-25 23:20:56,758 INFO L168 Benchmark]: Witness Printer took 125.40 ms. Allocated memory is still 9.3 GB. Free memory was 6.1 GB in the beginning and 6.1 GB in the end (delta: 38.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-08-25 23:20:56,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 85.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2451.11 ms. Allocated memory was 92.3 MB in the beginning and 601.9 MB in the end (delta: 509.6 MB). Free memory was 40.5 MB in the beginning and 430.2 MB in the end (delta: -389.7 MB). Peak memory consumption was 180.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 931.80 ms. Allocated memory is still 601.9 MB. Free memory was 429.2 MB in the beginning and 352.6 MB in the end (delta: 76.5 MB). Peak memory consumption was 212.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 948.44 ms. Allocated memory is still 601.9 MB. Free memory was 352.6 MB in the beginning and 270.9 MB in the end (delta: 81.8 MB). Peak memory consumption was 129.0 MB. Max. memory is 16.1 GB. * RCFGBuilder took 23753.97 ms. Allocated memory was 601.9 MB in the beginning and 3.6 GB in the end (delta: 3.0 GB). Free memory was 270.9 MB in the beginning and 2.8 GB in the end (delta: -2.5 GB). Peak memory consumption was 850.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 126898.10 ms. Allocated memory was 3.6 GB in the beginning and 9.3 GB in the end (delta: 5.7 GB). Free memory was 2.8 GB in the beginning and 6.1 GB in the end (delta: -3.3 GB). Peak memory consumption was 2.3 GB. Max. memory is 16.1 GB. * Witness Printer took 125.40 ms. Allocated memory is still 9.3 GB. Free memory was 6.1 GB in the beginning and 6.1 GB in the end (delta: 38.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 49140]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L7] int m_getInetAddress = 1; [L8] int m_getOOBInline = 2; [L9] int m_getLocalPort = 3; [L10] int m_isInputShutdown = 4; [L11] int m_setTcpNoDelay = 5; [L12] int m_isConnected = 6; [L13] int m_getKeepAlive = 7; [L14] int m_getLocalAddress = 8; [L15] int m_bind = 9; [L16] int m_getChannel = 10; [L17] int m_getSoLinger = 11; [L18] int m_getImpl = 12; [L19] int m_getTcpNoDelay = 13; [L20] int m_getSoTimeout = 14; [L21] int m_isOutputShutdown = 15; [L22] int m_postAccept = 16; [L23] int m_close = 17; [L24] int m_setOOBInline = 18; [L25] int m_getLocalSocketAddress = 19; [L26] int m_getReceiveBufferSize = 20; [L27] int m_setReuseAddress = 21; [L28] int m_getTrafficClass = 22; [L29] int m_getReuseAddress = 23; [L30] int m_createImpl = 24; [L31] int m_setCreated = 25; [L32] int m_setKeepAlive = 26; [L33] int m_getInputStream = 27; [L34] int m_shutdownOutput = 28; [L35] int m_shutdownInput = 29; [L36] int m_setPerformancePreferences = 30; [L37] int m_getPort = 31; [L38] int m_sendUrgentData = 32; [L39] int m_isClosed = 33; [L40] int m_isBound = 34; [L41] int m_setBound = 35; [L42] int m_getSendBufferSize = 36; [L43] int m_getOutputStream = 37; [L44] int m_setConnected = 38; [L45] int m_Socket = 39; [L46] int m_getRemoteSocketAddress = 40; [L47] int m_setReceiveBufferSize_1 = 41; [L48] int m_setReceiveBufferSize_2 = 42; [L49] int m_connect2_1 = 43; [L50] int m_connect2_2 = 44; [L51] int m_setSoLinger_1 = 45; [L52] int m_setSoLinger_2 = 46; [L53] int m_connect1_1 = 47; [L54] int m_connect1_2 = 48; [L55] int m_setTrafficClass_1 = 49; [L56] int m_setTrafficClass_2 = 50; [L57] int m_setSoTimeout_1 = 51; [L58] int m_setSoTimeout_2 = 52; [L59] int m_setSendBufferSize_1 = 53; [L60] int m_setSendBufferSize_2 = 54; [L61] int m_setSocketImplFactory_1 = 55; [L62] int m_setSocketImplFactory_2 = 56; VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L67] int q = 0; [L68] int method_id; [L71] int this_oldImpl = 0; [L72] int this_factory = 0; [L73] int this_shutOut = 0; [L74] int this_created = 0; [L75] int this_shutIn = 0; [L76] int this_closed = 0; [L77] int this_bound = 0; [L78] int this_impl = 1; [L79] int this_connected = 0; VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L82] COND TRUE 1 [L85] _Bool P1=__VERIFIER_nondet_int(); [L86] int P2=__VERIFIER_nondet_int(); [L87] _Bool P3=__VERIFIER_nondet_int(); [L88] _Bool P4=__VERIFIER_nondet_int(); [L89] _Bool P5=__VERIFIER_nondet_int(); [L90] _Bool P6=__VERIFIER_nondet_int(); [L91] int P7=__VERIFIER_nondet_int(); [L92] int P8=__VERIFIER_nondet_int(); [L93] int P9=__VERIFIER_nondet_int(); [L94] int P10=__VERIFIER_nondet_int(); [L95] int P11=__VERIFIER_nondet_int(); [L96] int P12=__VERIFIER_nondet_int(); [L97] int P13=__VERIFIER_nondet_int(); [L98] int P14=__VERIFIER_nondet_int(); [L99] int P15=__VERIFIER_nondet_int(); [L100] int P16=__VERIFIER_nondet_int(); [L101] _Bool P17=__VERIFIER_nondet_int(); [L102] int P18=__VERIFIER_nondet_int(); [L103] _Bool P19=__VERIFIER_nondet_int(); [L104] int P20=__VERIFIER_nondet_int(); [L105] int P21=__VERIFIER_nondet_int(); [L106] int P22=__VERIFIER_nondet_int(); [L107] int P23=__VERIFIER_nondet_int(); [L108] int P24=__VERIFIER_nondet_int(); [L109] int P25=__VERIFIER_nondet_int(); [L110] int P26=__VERIFIER_nondet_int(); [L111] int P27=__VERIFIER_nondet_int(); [L112] int P28=__VERIFIER_nondet_int(); [L113] int P29=__VERIFIER_nondet_int(); [L114] int P30=__VERIFIER_nondet_int(); [L118] COND TRUE q == 0 [L119] COND TRUE __VERIFIER_nondet_int() [L123] method_id = 39 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L125] COND FALSE !(0) [L129] q = 2 [L131] this_factory=0 [L131] this_shutIn=0 [L131] this_connected=0 [L131] this_closed=0 [L131] this_shutOut=0 [L131] this_created=0 [L131] this_impl=1 [L131] this_bound=0 [L131] this_oldImpl=0 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L82] COND TRUE 1 [L85] _Bool P1=__VERIFIER_nondet_int(); [L86] int P2=__VERIFIER_nondet_int(); [L87] _Bool P3=__VERIFIER_nondet_int(); [L88] _Bool P4=__VERIFIER_nondet_int(); [L89] _Bool P5=__VERIFIER_nondet_int(); [L90] _Bool P6=__VERIFIER_nondet_int(); [L91] int P7=__VERIFIER_nondet_int(); [L92] int P8=__VERIFIER_nondet_int(); [L93] int P9=__VERIFIER_nondet_int(); [L94] int P10=__VERIFIER_nondet_int(); [L95] int P11=__VERIFIER_nondet_int(); [L96] int P12=__VERIFIER_nondet_int(); [L97] int P13=__VERIFIER_nondet_int(); [L98] int P14=__VERIFIER_nondet_int(); [L99] int P15=__VERIFIER_nondet_int(); [L100] int P16=__VERIFIER_nondet_int(); [L101] _Bool P17=__VERIFIER_nondet_int(); [L102] int P18=__VERIFIER_nondet_int(); [L103] _Bool P19=__VERIFIER_nondet_int(); [L104] int P20=__VERIFIER_nondet_int(); [L105] int P21=__VERIFIER_nondet_int(); [L106] int P22=__VERIFIER_nondet_int(); [L107] int P23=__VERIFIER_nondet_int(); [L108] int P24=__VERIFIER_nondet_int(); [L109] int P25=__VERIFIER_nondet_int(); [L110] int P26=__VERIFIER_nondet_int(); [L111] int P27=__VERIFIER_nondet_int(); [L112] int P28=__VERIFIER_nondet_int(); [L113] int P29=__VERIFIER_nondet_int(); [L114] int P30=__VERIFIER_nondet_int(); [L118] COND FALSE !(q == 0) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L138] COND FALSE !(q == 1) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L750] COND TRUE q == 2 [L751] COND FALSE !(__VERIFIER_nondet_int()) [L767] COND FALSE !(__VERIFIER_nondet_int()) [L783] COND FALSE !(__VERIFIER_nondet_int()) [L799] COND FALSE !(__VERIFIER_nondet_int()) [L815] COND FALSE !(__VERIFIER_nondet_int()) [L831] COND FALSE !(__VERIFIER_nondet_int()) [L847] COND FALSE !(__VERIFIER_nondet_int()) [L863] COND FALSE !(__VERIFIER_nondet_int()) [L879] COND FALSE !(__VERIFIER_nondet_int()) [L895] COND FALSE !(__VERIFIER_nondet_int()) [L911] COND FALSE !(__VERIFIER_nondet_int()) [L927] COND FALSE !(__VERIFIER_nondet_int()) [L943] COND FALSE !(__VERIFIER_nondet_int()) [L959] COND FALSE !(__VERIFIER_nondet_int()) [L975] COND FALSE !(__VERIFIER_nondet_int()) [L991] COND FALSE !(__VERIFIER_nondet_int()) [L1007] COND FALSE !(__VERIFIER_nondet_int()) [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1039] COND FALSE !(__VERIFIER_nondet_int()) [L1055] COND FALSE !(__VERIFIER_nondet_int()) [L1071] COND FALSE !(__VERIFIER_nondet_int()) [L1087] COND FALSE !(__VERIFIER_nondet_int()) [L1103] COND FALSE !(__VERIFIER_nondet_int()) [L1119] COND FALSE !(__VERIFIER_nondet_int()) [L1135] COND FALSE !(__VERIFIER_nondet_int()) [L1151] COND FALSE !(__VERIFIER_nondet_int()) [L1167] COND FALSE !(__VERIFIER_nondet_int()) [L1183] COND FALSE !(__VERIFIER_nondet_int()) [L1199] COND FALSE !(__VERIFIER_nondet_int()) [L1215] COND FALSE !(__VERIFIER_nondet_int()) [L1231] COND FALSE !(__VERIFIER_nondet_int()) [L1247] COND FALSE !(__VERIFIER_nondet_int()) [L1263] COND FALSE !(__VERIFIER_nondet_int()) [L1279] COND FALSE !(__VERIFIER_nondet_int()) [L1295] COND FALSE !(__VERIFIER_nondet_int()) [L1311] COND FALSE !(__VERIFIER_nondet_int()) [L1327] COND FALSE !(__VERIFIER_nondet_int()) [L1343] COND FALSE !(__VERIFIER_nondet_int()) [L1359] COND FALSE !(__VERIFIER_nondet_int()) [L1375] COND FALSE !(__VERIFIER_nondet_int()) [L1391] COND FALSE !(__VERIFIER_nondet_int()) [L1407] COND FALSE !(__VERIFIER_nondet_int()) [L1423] COND FALSE !(__VERIFIER_nondet_int()) [L1439] COND FALSE !(__VERIFIER_nondet_int()) [L1455] COND FALSE !(__VERIFIER_nondet_int()) [L1471] COND FALSE !(__VERIFIER_nondet_int()) [L1487] COND FALSE !(__VERIFIER_nondet_int()) [L1503] COND FALSE !(__VERIFIER_nondet_int()) [L1519] COND FALSE !(__VERIFIER_nondet_int()) [L1535] COND FALSE !(__VERIFIER_nondet_int()) [L1551] COND FALSE !(__VERIFIER_nondet_int()) [L1567] COND FALSE !(__VERIFIER_nondet_int()) [L1583] COND FALSE !(__VERIFIER_nondet_int()) [L1599] COND FALSE !(__VERIFIER_nondet_int()) [L1615] COND FALSE !(__VERIFIER_nondet_int()) [L1631] COND FALSE !(__VERIFIER_nondet_int()) [L1647] COND FALSE !(__VERIFIER_nondet_int()) [L1663] COND FALSE !(__VERIFIER_nondet_int()) [L1679] COND FALSE !(__VERIFIER_nondet_int()) [L1695] COND FALSE !(__VERIFIER_nondet_int()) [L1711] COND FALSE !(__VERIFIER_nondet_int()) [L1727] COND FALSE !(__VERIFIER_nondet_int()) [L1743] COND FALSE !(__VERIFIER_nondet_int()) [L1759] COND FALSE !(__VERIFIER_nondet_int()) [L1775] COND FALSE !(__VERIFIER_nondet_int()) [L1791] COND FALSE !(__VERIFIER_nondet_int()) [L1807] COND FALSE !(__VERIFIER_nondet_int()) [L1823] COND FALSE !(__VERIFIER_nondet_int()) [L1839] COND FALSE !(__VERIFIER_nondet_int()) [L1855] COND FALSE !(__VERIFIER_nondet_int()) [L1871] COND FALSE !(__VERIFIER_nondet_int()) [L1887] COND FALSE !(__VERIFIER_nondet_int()) [L1903] COND FALSE !(__VERIFIER_nondet_int()) [L1919] COND FALSE !(__VERIFIER_nondet_int()) [L1935] COND FALSE !(__VERIFIER_nondet_int()) [L1951] COND FALSE !(__VERIFIER_nondet_int()) [L1967] COND FALSE !(__VERIFIER_nondet_int()) [L1983] COND FALSE !(__VERIFIER_nondet_int()) [L1999] COND FALSE !(__VERIFIER_nondet_int()) [L2015] COND FALSE !(__VERIFIER_nondet_int()) [L2031] COND FALSE !(__VERIFIER_nondet_int()) [L2047] COND FALSE !(__VERIFIER_nondet_int()) [L2063] COND FALSE !(__VERIFIER_nondet_int()) [L2079] COND TRUE __VERIFIER_nondet_int() [L2081] COND TRUE !(P1 != 0) [L2083] method_id = 56 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L2085] COND FALSE !(((this_factory != 0) && !(P30 != 0))) [L2089] q = 2 [L2091] this_factory=P30 [L2091] this_shutIn=this_shutIn [L2091] this_connected=this_connected [L2091] this_closed=this_closed [L2091] this_shutOut=this_shutOut [L2091] this_created=this_created [L2091] this_impl=this_impl [L2091] this_bound=this_bound [L2091] this_oldImpl=this_oldImpl VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L82] COND TRUE 1 [L85] _Bool P1=__VERIFIER_nondet_int(); [L86] int P2=__VERIFIER_nondet_int(); [L87] _Bool P3=__VERIFIER_nondet_int(); [L88] _Bool P4=__VERIFIER_nondet_int(); [L89] _Bool P5=__VERIFIER_nondet_int(); [L90] _Bool P6=__VERIFIER_nondet_int(); [L91] int P7=__VERIFIER_nondet_int(); [L92] int P8=__VERIFIER_nondet_int(); [L93] int P9=__VERIFIER_nondet_int(); [L94] int P10=__VERIFIER_nondet_int(); [L95] int P11=__VERIFIER_nondet_int(); [L96] int P12=__VERIFIER_nondet_int(); [L97] int P13=__VERIFIER_nondet_int(); [L98] int P14=__VERIFIER_nondet_int(); [L99] int P15=__VERIFIER_nondet_int(); [L100] int P16=__VERIFIER_nondet_int(); [L101] _Bool P17=__VERIFIER_nondet_int(); [L102] int P18=__VERIFIER_nondet_int(); [L103] _Bool P19=__VERIFIER_nondet_int(); [L104] int P20=__VERIFIER_nondet_int(); [L105] int P21=__VERIFIER_nondet_int(); [L106] int P22=__VERIFIER_nondet_int(); [L107] int P23=__VERIFIER_nondet_int(); [L108] int P24=__VERIFIER_nondet_int(); [L109] int P25=__VERIFIER_nondet_int(); [L110] int P26=__VERIFIER_nondet_int(); [L111] int P27=__VERIFIER_nondet_int(); [L112] int P28=__VERIFIER_nondet_int(); [L113] int P29=__VERIFIER_nondet_int(); [L114] int P30=__VERIFIER_nondet_int(); [L118] COND FALSE !(q == 0) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L138] COND FALSE !(q == 1) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L750] COND TRUE q == 2 [L751] COND FALSE !(__VERIFIER_nondet_int()) [L767] COND FALSE !(__VERIFIER_nondet_int()) [L783] COND FALSE !(__VERIFIER_nondet_int()) [L799] COND FALSE !(__VERIFIER_nondet_int()) [L815] COND FALSE !(__VERIFIER_nondet_int()) [L831] COND FALSE !(__VERIFIER_nondet_int()) [L847] COND FALSE !(__VERIFIER_nondet_int()) [L863] COND FALSE !(__VERIFIER_nondet_int()) [L879] COND FALSE !(__VERIFIER_nondet_int()) [L895] COND FALSE !(__VERIFIER_nondet_int()) [L911] COND FALSE !(__VERIFIER_nondet_int()) [L927] COND FALSE !(__VERIFIER_nondet_int()) [L943] COND FALSE !(__VERIFIER_nondet_int()) [L959] COND FALSE !(__VERIFIER_nondet_int()) [L975] COND FALSE !(__VERIFIER_nondet_int()) [L991] COND FALSE !(__VERIFIER_nondet_int()) [L1007] COND FALSE !(__VERIFIER_nondet_int()) [L1023] COND FALSE !(__VERIFIER_nondet_int()) [L1039] COND FALSE !(__VERIFIER_nondet_int()) [L1055] COND FALSE !(__VERIFIER_nondet_int()) [L1071] COND FALSE !(__VERIFIER_nondet_int()) [L1087] COND FALSE !(__VERIFIER_nondet_int()) [L1103] COND FALSE !(__VERIFIER_nondet_int()) [L1119] COND FALSE !(__VERIFIER_nondet_int()) [L1135] COND FALSE !(__VERIFIER_nondet_int()) [L1151] COND FALSE !(__VERIFIER_nondet_int()) [L1167] COND FALSE !(__VERIFIER_nondet_int()) [L1183] COND FALSE !(__VERIFIER_nondet_int()) [L1199] COND FALSE !(__VERIFIER_nondet_int()) [L1215] COND FALSE !(__VERIFIER_nondet_int()) [L1231] COND FALSE !(__VERIFIER_nondet_int()) [L1247] COND FALSE !(__VERIFIER_nondet_int()) [L1263] COND FALSE !(__VERIFIER_nondet_int()) [L1279] COND FALSE !(__VERIFIER_nondet_int()) [L1295] COND FALSE !(__VERIFIER_nondet_int()) [L1311] COND FALSE !(__VERIFIER_nondet_int()) [L1327] COND FALSE !(__VERIFIER_nondet_int()) [L1343] COND FALSE !(__VERIFIER_nondet_int()) [L1359] COND FALSE !(__VERIFIER_nondet_int()) [L1375] COND FALSE !(__VERIFIER_nondet_int()) [L1391] COND FALSE !(__VERIFIER_nondet_int()) [L1407] COND FALSE !(__VERIFIER_nondet_int()) [L1423] COND FALSE !(__VERIFIER_nondet_int()) [L1439] COND FALSE !(__VERIFIER_nondet_int()) [L1455] COND FALSE !(__VERIFIER_nondet_int()) [L1471] COND FALSE !(__VERIFIER_nondet_int()) [L1487] COND FALSE !(__VERIFIER_nondet_int()) [L1503] COND FALSE !(__VERIFIER_nondet_int()) [L1519] COND FALSE !(__VERIFIER_nondet_int()) [L1535] COND FALSE !(__VERIFIER_nondet_int()) [L1551] COND FALSE !(__VERIFIER_nondet_int()) [L1567] COND FALSE !(__VERIFIER_nondet_int()) [L1583] COND FALSE !(__VERIFIER_nondet_int()) [L1599] COND FALSE !(__VERIFIER_nondet_int()) [L1615] COND FALSE !(__VERIFIER_nondet_int()) [L1631] COND FALSE !(__VERIFIER_nondet_int()) [L1647] COND FALSE !(__VERIFIER_nondet_int()) [L1663] COND FALSE !(__VERIFIER_nondet_int()) [L1679] COND FALSE !(__VERIFIER_nondet_int()) [L1695] COND FALSE !(__VERIFIER_nondet_int()) [L1711] COND FALSE !(__VERIFIER_nondet_int()) [L1727] COND FALSE !(__VERIFIER_nondet_int()) [L1743] COND FALSE !(__VERIFIER_nondet_int()) [L1759] COND FALSE !(__VERIFIER_nondet_int()) [L1775] COND FALSE !(__VERIFIER_nondet_int()) [L1791] COND FALSE !(__VERIFIER_nondet_int()) [L1807] COND FALSE !(__VERIFIER_nondet_int()) [L1823] COND FALSE !(__VERIFIER_nondet_int()) [L1839] COND FALSE !(__VERIFIER_nondet_int()) [L1855] COND FALSE !(__VERIFIER_nondet_int()) [L1871] COND FALSE !(__VERIFIER_nondet_int()) [L1887] COND FALSE !(__VERIFIER_nondet_int()) [L1903] COND FALSE !(__VERIFIER_nondet_int()) [L1919] COND FALSE !(__VERIFIER_nondet_int()) [L1935] COND FALSE !(__VERIFIER_nondet_int()) [L1951] COND FALSE !(__VERIFIER_nondet_int()) [L1967] COND FALSE !(__VERIFIER_nondet_int()) [L1983] COND FALSE !(__VERIFIER_nondet_int()) [L1999] COND FALSE !(__VERIFIER_nondet_int()) [L2015] COND FALSE !(__VERIFIER_nondet_int()) [L2031] COND FALSE !(__VERIFIER_nondet_int()) [L2047] COND FALSE !(__VERIFIER_nondet_int()) [L2063] COND TRUE __VERIFIER_nondet_int() [L2065] COND TRUE (P1 != 0) [L2067] method_id = 55 VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L2069] COND TRUE ((this_factory != 0) && (P29 != 0)) VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] [L49140] reach_error() VAL [m_bind=9, m_close=17, m_connect1_1=47, m_connect1_2=48, m_connect2_1=43, m_connect2_2=44, m_createImpl=24, m_getChannel=10, m_getImpl=12, m_getInetAddress=1, m_getInputStream=27, m_getKeepAlive=7, m_getLocalAddress=8, m_getLocalPort=3, m_getLocalSocketAddress=19, m_getOOBInline=2, m_getOutputStream=37, m_getPort=31, m_getReceiveBufferSize=20, m_getRemoteSocketAddress=40, m_getReuseAddress=23, m_getSendBufferSize=36, m_getSoLinger=11, m_getSoTimeout=14, m_getTcpNoDelay=13, m_getTrafficClass=22, m_isBound=34, m_isClosed=33, m_isConnected=6, m_isInputShutdown=4, m_isOutputShutdown=15, m_postAccept=16, m_sendUrgentData=32, m_setBound=35, m_setConnected=38, m_setCreated=25, m_setKeepAlive=26, m_setOOBInline=18, m_setPerformancePreferences=30, m_setReceiveBufferSize_1=41, m_setReceiveBufferSize_2=42, m_setReuseAddress=21, m_setSendBufferSize_1=53, m_setSendBufferSize_2=54, m_setSocketImplFactory_1=55, m_setSocketImplFactory_2=56, m_setSoLinger_1=45, m_setSoLinger_2=46, m_setSoTimeout_1=51, m_setSoTimeout_2=52, m_setTcpNoDelay=5, m_setTrafficClass_1=49, m_setTrafficClass_2=50, m_shutdownInput=29, m_shutdownOutput=28, m_Socket=39] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9211 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 126680.1ms, OverallIterations: 28, TraceHistogramMax: 4, EmptinessCheckTime: 89.7ms, AutomataDifference: 110428.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 101.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 310337 SDtfs, 209697 SDslu, 193692 SDs, 0 SdLazy, 55300 SolverSat, 21811 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73401.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 183.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=64384occurred in iteration=10, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12720.5ms AutomataMinimizationTime, 27 MinimizatonAttempts, 16246 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 487.3ms SsaConstructionTime, 697.6ms SatisfiabilityAnalysisTime, 1447.1ms InterpolantComputationTime, 2220 NumberOfCodeBlocks, 2220 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 2005 ConstructedInterpolants, 0 QuantifiedInterpolants, 5604 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 219/219 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-25 23:20:56,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...