./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0 --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 6ff1cedc7411bab7c4dff496b498f1be2a7af9e572a1448d390780005c75fec3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:23:15,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:23:15,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:23:15,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:23:15,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:23:15,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:23:15,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:23:15,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:23:15,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:23:15,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:23:15,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:23:15,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:23:15,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:23:15,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:23:15,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:23:15,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:23:15,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:23:15,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:23:15,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:23:15,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:23:15,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:23:15,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:23:15,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:23:15,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:23:15,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:23:15,393 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:23:15,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:23:15,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:23:15,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:23:15,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:23:15,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:23:15,399 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:23:15,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:23:15,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:23:15,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:23:15,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:23:15,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:23:15,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:23:15,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:23:15,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:23:15,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:23:15,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:23:15,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:23:15,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:23:15,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:23:15,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:23:15,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:23:15,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:23:15,432 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:23:15,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:23:15,433 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:23:15,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:23:15,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:23:15,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:23:15,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:23:15,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:23:15,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:23:15,434 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:23:15,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:23:15,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:23:15,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:23:15,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:23:15,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:23:15,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:23:15,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:23:15,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:23:15,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:23:15,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:23:15,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:23:15,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:23:15,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:23:15,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:23:15,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:23:15,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:23:15,438 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ff1cedc7411bab7c4dff496b498f1be2a7af9e572a1448d390780005c75fec3 [2021-11-22 16:23:15,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:23:15,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:23:15,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:23:15,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:23:15,782 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:23:15,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c [2021-11-22 16:23:15,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/data/3b2e6a6a5/2dd521746f02426196ad8159e1cbe51b/FLAG0ac03c397 [2021-11-22 16:23:16,374 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:23:16,375 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c [2021-11-22 16:23:16,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/data/3b2e6a6a5/2dd521746f02426196ad8159e1cbe51b/FLAG0ac03c397 [2021-11-22 16:23:16,713 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/data/3b2e6a6a5/2dd521746f02426196ad8159e1cbe51b [2021-11-22 16:23:16,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:23:16,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:23:16,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:23:16,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:23:16,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:23:16,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:23:16" (1/1) ... [2021-11-22 16:23:16,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9645eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:16, skipping insertion in model container [2021-11-22 16:23:16,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:23:16" (1/1) ... [2021-11-22 16:23:16,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:23:16,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:23:17,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c[12106,12119] [2021-11-22 16:23:17,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:23:17,064 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:23:17,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c[12106,12119] [2021-11-22 16:23:17,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:23:17,142 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:23:17,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17 WrapperNode [2021-11-22 16:23:17,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:23:17,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:23:17,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:23:17,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:23:17,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,268 INFO L137 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 46, calls inlined = 89, statements flattened = 1609 [2021-11-22 16:23:17,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:23:17,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:23:17,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:23:17,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:23:17,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:23:17,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:23:17,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:23:17,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:23:17,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (1/1) ... [2021-11-22 16:23:17,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:23:17,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:17,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:23:17,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:23:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:23:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:23:17,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:23:17,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:23:17,590 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:23:17,592 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:23:18,870 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:23:18,893 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:23:18,893 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-22 16:23:18,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:23:18 BoogieIcfgContainer [2021-11-22 16:23:18,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:23:18,901 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:23:18,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:23:18,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:23:18,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:23:16" (1/3) ... [2021-11-22 16:23:18,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e4a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:23:18, skipping insertion in model container [2021-11-22 16:23:18,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:23:17" (2/3) ... [2021-11-22 16:23:18,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e4a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:23:18, skipping insertion in model container [2021-11-22 16:23:18,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:23:18" (3/3) ... [2021-11-22 16:23:18,911 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.UNBOUNDED.pals.c [2021-11-22 16:23:18,920 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:23:18,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-11-22 16:23:18,981 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:23:18,988 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 16:23:18,988 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-11-22 16:23:19,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 535 states, 497 states have (on average 1.7766599597585513) internal successors, (883), 534 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 16:23:19,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:19,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:19,026 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash 595705480, now seen corresponding path program 1 times [2021-11-22 16:23:19,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:19,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647594989] [2021-11-22 16:23:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:19,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:19,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:19,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647594989] [2021-11-22 16:23:19,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647594989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:19,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:19,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:19,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870415270] [2021-11-22 16:23:19,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:19,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:19,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:19,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:19,378 INFO L87 Difference]: Start difference. First operand has 535 states, 497 states have (on average 1.7766599597585513) internal successors, (883), 534 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-11-22 16:23:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:19,777 INFO L93 Difference]: Finished difference Result 1287 states and 2105 transitions. [2021-11-22 16:23:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:19,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2021-11-22 16:23:19,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:19,814 INFO L225 Difference]: With dead ends: 1287 [2021-11-22 16:23:19,815 INFO L226 Difference]: Without dead ends: 754 [2021-11-22 16:23:19,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:19,831 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 491 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:19,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1504 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:23:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-22 16:23:19,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 471. [2021-11-22 16:23:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 440 states have (on average 1.6522727272727273) internal successors, (727), 470 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 727 transitions. [2021-11-22 16:23:19,921 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 727 transitions. Word has length 9 [2021-11-22 16:23:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:19,921 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 727 transitions. [2021-11-22 16:23:19,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-11-22 16:23:19,922 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 727 transitions. [2021-11-22 16:23:19,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 16:23:19,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:19,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:19,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:23:19,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:19,925 INFO L85 PathProgramCache]: Analyzing trace with hash -503954138, now seen corresponding path program 1 times [2021-11-22 16:23:19,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:19,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674688191] [2021-11-22 16:23:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:19,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:19,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:19,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674688191] [2021-11-22 16:23:19,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674688191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:19,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:19,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:19,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622622777] [2021-11-22 16:23:19,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:19,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:19,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:19,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:19,975 INFO L87 Difference]: Start difference. First operand 471 states and 727 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) [2021-11-22 16:23:20,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:20,048 INFO L93 Difference]: Finished difference Result 1173 states and 1791 transitions. [2021-11-22 16:23:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:20,049 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 [2021-11-22 16:23:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:20,054 INFO L225 Difference]: With dead ends: 1173 [2021-11-22 16:23:20,055 INFO L226 Difference]: Without dead ends: 704 [2021-11-22 16:23:20,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:20,058 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 438 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:20,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1267 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:20,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-22 16:23:20,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 438. [2021-11-22 16:23:20,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 410 states have (on average 1.6317073170731706) internal successors, (669), 437 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:20,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 669 transitions. [2021-11-22 16:23:20,088 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 669 transitions. Word has length 10 [2021-11-22 16:23:20,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:20,089 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 669 transitions. [2021-11-22 16:23:20,089 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) [2021-11-22 16:23:20,089 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 669 transitions. [2021-11-22 16:23:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 16:23:20,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:20,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:20,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:23:20,093 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash -248055967, now seen corresponding path program 1 times [2021-11-22 16:23:20,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:20,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94265917] [2021-11-22 16:23:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:20,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:20,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:20,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94265917] [2021-11-22 16:23:20,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94265917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:20,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:20,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:20,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966307692] [2021-11-22 16:23:20,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:20,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:20,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:20,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:20,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:20,138 INFO L87 Difference]: Start difference. First operand 438 states and 669 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:20,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:20,207 INFO L93 Difference]: Finished difference Result 1292 states and 1978 transitions. [2021-11-22 16:23:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:20,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-11-22 16:23:20,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:20,214 INFO L225 Difference]: With dead ends: 1292 [2021-11-22 16:23:20,214 INFO L226 Difference]: Without dead ends: 864 [2021-11-22 16:23:20,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:20,217 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 640 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:20,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 1290 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-11-22 16:23:20,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 442. [2021-11-22 16:23:20,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 414 states have (on average 1.6256038647342994) internal successors, (673), 441 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 673 transitions. [2021-11-22 16:23:20,238 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 673 transitions. Word has length 14 [2021-11-22 16:23:20,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:20,239 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 673 transitions. [2021-11-22 16:23:20,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:20,239 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 673 transitions. [2021-11-22 16:23:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 16:23:20,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:20,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:20,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:23:20,241 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:20,242 INFO L85 PathProgramCache]: Analyzing trace with hash -35486156, now seen corresponding path program 1 times [2021-11-22 16:23:20,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:20,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026043877] [2021-11-22 16:23:20,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:20,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:20,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:20,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:20,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026043877] [2021-11-22 16:23:20,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026043877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:20,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:20,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:23:20,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171017778] [2021-11-22 16:23:20,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:20,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:20,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:20,315 INFO L87 Difference]: Start difference. First operand 442 states and 673 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:20,409 INFO L93 Difference]: Finished difference Result 1649 states and 2482 transitions. [2021-11-22 16:23:20,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:23:20,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-11-22 16:23:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:20,420 INFO L225 Difference]: With dead ends: 1649 [2021-11-22 16:23:20,420 INFO L226 Difference]: Without dead ends: 1221 [2021-11-22 16:23:20,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:20,435 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1534 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:20,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1934 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2021-11-22 16:23:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 444. [2021-11-22 16:23:20,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 416 states have (on average 1.6225961538461537) internal successors, (675), 443 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 675 transitions. [2021-11-22 16:23:20,460 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 675 transitions. Word has length 18 [2021-11-22 16:23:20,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:20,460 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 675 transitions. [2021-11-22 16:23:20,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:20,461 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 675 transitions. [2021-11-22 16:23:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 16:23:20,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:20,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:20,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:23:20,463 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:20,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:20,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1707916525, now seen corresponding path program 1 times [2021-11-22 16:23:20,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:20,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408022984] [2021-11-22 16:23:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:20,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:20,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408022984] [2021-11-22 16:23:20,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408022984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:20,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:20,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:23:20,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68732595] [2021-11-22 16:23:20,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:20,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:20,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:20,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:20,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:20,518 INFO L87 Difference]: Start difference. First operand 444 states and 675 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-11-22 16:23:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:20,558 INFO L93 Difference]: Finished difference Result 701 states and 1056 transitions. [2021-11-22 16:23:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:20,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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 [2021-11-22 16:23:20,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:20,562 INFO L225 Difference]: With dead ends: 701 [2021-11-22 16:23:20,562 INFO L226 Difference]: Without dead ends: 442 [2021-11-22 16:23:20,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:20,564 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 1 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:20,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1953 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:20,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-22 16:23:20,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-11-22 16:23:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 414 states have (on average 1.6135265700483092) internal successors, (668), 441 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:20,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 668 transitions. [2021-11-22 16:23:20,596 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 668 transitions. Word has length 19 [2021-11-22 16:23:20,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:20,596 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 668 transitions. [2021-11-22 16:23:20,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 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) [2021-11-22 16:23:20,597 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 668 transitions. [2021-11-22 16:23:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 16:23:20,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:20,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:20,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:23:20,606 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1967275947, now seen corresponding path program 1 times [2021-11-22 16:23:20,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:20,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712346120] [2021-11-22 16:23:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:20,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:20,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:20,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712346120] [2021-11-22 16:23:20,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712346120] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:23:20,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157921232] [2021-11-22 16:23:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:20,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:20,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:20,710 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:23:20,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 16:23:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:20,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:23:20,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:20,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:23:21,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157921232] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:23:21,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:23:21,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-22 16:23:21,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429686463] [2021-11-22 16:23:21,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:23:21,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:23:21,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:23:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:23:21,005 INFO L87 Difference]: Start difference. First operand 442 states and 668 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:21,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:21,244 INFO L93 Difference]: Finished difference Result 1993 states and 3018 transitions. [2021-11-22 16:23:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:23:21,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 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 21 [2021-11-22 16:23:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:21,257 INFO L225 Difference]: With dead ends: 1993 [2021-11-22 16:23:21,257 INFO L226 Difference]: Without dead ends: 1562 [2021-11-22 16:23:21,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:23:21,259 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 4414 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4414 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:21,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4414 Valid, 2295 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-11-22 16:23:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 737. [2021-11-22 16:23:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 709 states have (on average 1.6516220028208746) internal successors, (1171), 736 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1171 transitions. [2021-11-22 16:23:21,294 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1171 transitions. Word has length 21 [2021-11-22 16:23:21,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:21,294 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1171 transitions. [2021-11-22 16:23:21,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1171 transitions. [2021-11-22 16:23:21,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 16:23:21,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:21,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:21,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:21,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 16:23:21,511 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:21,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:21,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2124869355, now seen corresponding path program 2 times [2021-11-22 16:23:21,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:21,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228017768] [2021-11-22 16:23:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:21,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 16:23:21,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:21,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228017768] [2021-11-22 16:23:21,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228017768] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:21,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:21,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:21,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281402160] [2021-11-22 16:23:21,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:21,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:21,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:21,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:21,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:21,586 INFO L87 Difference]: Start difference. First operand 737 states and 1171 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:21,693 INFO L93 Difference]: Finished difference Result 1652 states and 2586 transitions. [2021-11-22 16:23:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:21,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 35 [2021-11-22 16:23:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:21,701 INFO L225 Difference]: With dead ends: 1652 [2021-11-22 16:23:21,701 INFO L226 Difference]: Without dead ends: 982 [2021-11-22 16:23:21,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:21,717 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 412 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:21,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1380 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2021-11-22 16:23:21,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 650. [2021-11-22 16:23:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 627 states have (on average 1.5964912280701755) internal successors, (1001), 649 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:21,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1001 transitions. [2021-11-22 16:23:21,747 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1001 transitions. Word has length 35 [2021-11-22 16:23:21,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:21,748 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 1001 transitions. [2021-11-22 16:23:21,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1001 transitions. [2021-11-22 16:23:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 16:23:21,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:21,751 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:21,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 16:23:21,752 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:21,752 INFO L85 PathProgramCache]: Analyzing trace with hash -227502305, now seen corresponding path program 1 times [2021-11-22 16:23:21,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:21,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363061322] [2021-11-22 16:23:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:21,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 16:23:21,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:21,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363061322] [2021-11-22 16:23:21,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363061322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:21,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:21,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:21,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354149747] [2021-11-22 16:23:21,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:21,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:21,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:21,808 INFO L87 Difference]: Start difference. First operand 650 states and 1001 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:21,862 INFO L93 Difference]: Finished difference Result 1433 states and 2181 transitions. [2021-11-22 16:23:21,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:21,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 35 [2021-11-22 16:23:21,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:21,873 INFO L225 Difference]: With dead ends: 1433 [2021-11-22 16:23:21,873 INFO L226 Difference]: Without dead ends: 822 [2021-11-22 16:23:21,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:21,875 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 394 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:21,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 1344 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:21,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2021-11-22 16:23:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 577. [2021-11-22 16:23:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 556 states have (on average 1.5503597122302157) internal successors, (862), 576 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:21,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 862 transitions. [2021-11-22 16:23:21,901 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 862 transitions. Word has length 35 [2021-11-22 16:23:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:21,903 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 862 transitions. [2021-11-22 16:23:21,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 862 transitions. [2021-11-22 16:23:21,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 16:23:21,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:21,906 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:21,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 16:23:21,906 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:21,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1528107588, now seen corresponding path program 1 times [2021-11-22 16:23:21,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:21,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318918148] [2021-11-22 16:23:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:21,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 16:23:21,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:21,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318918148] [2021-11-22 16:23:21,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318918148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:21,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:21,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:23:21,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031772649] [2021-11-22 16:23:21,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:21,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:21,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:21,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:21,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:21,989 INFO L87 Difference]: Start difference. First operand 577 states and 862 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:22,056 INFO L93 Difference]: Finished difference Result 1335 states and 1998 transitions. [2021-11-22 16:23:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:22,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 45 [2021-11-22 16:23:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:22,062 INFO L225 Difference]: With dead ends: 1335 [2021-11-22 16:23:22,062 INFO L226 Difference]: Without dead ends: 820 [2021-11-22 16:23:22,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:22,066 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 353 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:22,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 1531 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:22,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2021-11-22 16:23:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 577. [2021-11-22 16:23:22,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 556 states have (on average 1.5449640287769784) internal successors, (859), 576 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 859 transitions. [2021-11-22 16:23:22,092 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 859 transitions. Word has length 45 [2021-11-22 16:23:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:22,093 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 859 transitions. [2021-11-22 16:23:22,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 859 transitions. [2021-11-22 16:23:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 16:23:22,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:22,095 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:22,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 16:23:22,096 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:22,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1026162927, now seen corresponding path program 1 times [2021-11-22 16:23:22,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:22,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640218438] [2021-11-22 16:23:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:22,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-22 16:23:22,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:22,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640218438] [2021-11-22 16:23:22,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640218438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:22,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:22,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:22,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578938224] [2021-11-22 16:23:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:22,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:22,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:22,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:22,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:22,195 INFO L87 Difference]: Start difference. First operand 577 states and 859 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:22,239 INFO L93 Difference]: Finished difference Result 1250 states and 1866 transitions. [2021-11-22 16:23:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:22,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 66 [2021-11-22 16:23:22,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:22,246 INFO L225 Difference]: With dead ends: 1250 [2021-11-22 16:23:22,246 INFO L226 Difference]: Without dead ends: 754 [2021-11-22 16:23:22,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:22,248 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 412 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:22,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1247 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-22 16:23:22,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 512. [2021-11-22 16:23:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 492 states have (on average 1.5223577235772359) internal successors, (749), 511 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 749 transitions. [2021-11-22 16:23:22,269 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 749 transitions. Word has length 66 [2021-11-22 16:23:22,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:22,270 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 749 transitions. [2021-11-22 16:23:22,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,270 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 749 transitions. [2021-11-22 16:23:22,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 16:23:22,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:22,271 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:22,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 16:23:22,272 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:22,273 INFO L85 PathProgramCache]: Analyzing trace with hash -135597154, now seen corresponding path program 1 times [2021-11-22 16:23:22,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:22,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293771110] [2021-11-22 16:23:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:22,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-22 16:23:22,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:22,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293771110] [2021-11-22 16:23:22,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293771110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:22,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:22,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:22,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256985013] [2021-11-22 16:23:22,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:22,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:22,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:22,347 INFO L87 Difference]: Start difference. First operand 512 states and 749 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) [2021-11-22 16:23:22,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:22,420 INFO L93 Difference]: Finished difference Result 1051 states and 1531 transitions. [2021-11-22 16:23:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:22,421 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 67 [2021-11-22 16:23:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:22,425 INFO L225 Difference]: With dead ends: 1051 [2021-11-22 16:23:22,426 INFO L226 Difference]: Without dead ends: 612 [2021-11-22 16:23:22,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:22,428 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 333 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:22,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 919 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:22,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-11-22 16:23:22,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 456. [2021-11-22 16:23:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 440 states have (on average 1.4386363636363637) internal successors, (633), 455 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 633 transitions. [2021-11-22 16:23:22,446 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 633 transitions. Word has length 67 [2021-11-22 16:23:22,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:22,447 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 633 transitions. [2021-11-22 16:23:22,447 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) [2021-11-22 16:23:22,448 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 633 transitions. [2021-11-22 16:23:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 16:23:22,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:22,449 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:22,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 16:23:22,450 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:22,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash 274359631, now seen corresponding path program 1 times [2021-11-22 16:23:22,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:22,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344790049] [2021-11-22 16:23:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:22,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-22 16:23:22,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:22,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344790049] [2021-11-22 16:23:22,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344790049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:22,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:22,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:23:22,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232304847] [2021-11-22 16:23:22,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:22,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:22,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:22,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:22,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:22,522 INFO L87 Difference]: Start difference. First operand 456 states and 633 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:22,567 INFO L93 Difference]: Finished difference Result 1035 states and 1461 transitions. [2021-11-22 16:23:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:22,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 78 [2021-11-22 16:23:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:22,572 INFO L225 Difference]: With dead ends: 1035 [2021-11-22 16:23:22,572 INFO L226 Difference]: Without dead ends: 681 [2021-11-22 16:23:22,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:22,575 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 322 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:22,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 1249 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2021-11-22 16:23:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 456. [2021-11-22 16:23:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 440 states have (on average 1.4318181818181819) internal successors, (630), 455 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 630 transitions. [2021-11-22 16:23:22,593 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 630 transitions. Word has length 78 [2021-11-22 16:23:22,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:22,593 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 630 transitions. [2021-11-22 16:23:22,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 630 transitions. [2021-11-22 16:23:22,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-22 16:23:22,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:22,595 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:22,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 16:23:22,596 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:22,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1726325344, now seen corresponding path program 1 times [2021-11-22 16:23:22,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:22,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9712693] [2021-11-22 16:23:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:22,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:22,668 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-22 16:23:22,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:22,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9712693] [2021-11-22 16:23:22,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9712693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:22,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:22,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:22,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002207885] [2021-11-22 16:23:22,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:22,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:22,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:22,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:22,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:22,671 INFO L87 Difference]: Start difference. First operand 456 states and 630 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:22,715 INFO L93 Difference]: Finished difference Result 907 states and 1292 transitions. [2021-11-22 16:23:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:22,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 103 [2021-11-22 16:23:22,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:22,719 INFO L225 Difference]: With dead ends: 907 [2021-11-22 16:23:22,719 INFO L226 Difference]: Without dead ends: 593 [2021-11-22 16:23:22,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:22,722 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 313 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:22,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 804 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:22,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-11-22 16:23:22,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 412. [2021-11-22 16:23:22,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 406 states have (on average 1.4088669950738917) internal successors, (572), 411 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 572 transitions. [2021-11-22 16:23:22,741 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 572 transitions. Word has length 103 [2021-11-22 16:23:22,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:22,742 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 572 transitions. [2021-11-22 16:23:22,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,742 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 572 transitions. [2021-11-22 16:23:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 16:23:22,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:22,750 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:22,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 16:23:22,751 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:22,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1846233333, now seen corresponding path program 1 times [2021-11-22 16:23:22,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:22,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673725355] [2021-11-22 16:23:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:22,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-22 16:23:22,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:22,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673725355] [2021-11-22 16:23:22,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673725355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:22,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:22,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:22,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728939816] [2021-11-22 16:23:22,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:22,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:22,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:22,802 INFO L87 Difference]: Start difference. First operand 412 states and 572 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:22,834 INFO L93 Difference]: Finished difference Result 626 states and 888 transitions. [2021-11-22 16:23:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:22,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 112 [2021-11-22 16:23:22,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:22,837 INFO L225 Difference]: With dead ends: 626 [2021-11-22 16:23:22,837 INFO L226 Difference]: Without dead ends: 328 [2021-11-22 16:23:22,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:22,838 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 291 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:22,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 378 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-22 16:23:22,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-11-22 16:23:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 322 states have (on average 1.3850931677018634) internal successors, (446), 327 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 446 transitions. [2021-11-22 16:23:22,852 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 446 transitions. Word has length 112 [2021-11-22 16:23:22,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:22,852 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 446 transitions. [2021-11-22 16:23:22,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,852 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 446 transitions. [2021-11-22 16:23:22,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-22 16:23:22,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:22,854 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:22,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 16:23:22,854 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:22,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1519105475, now seen corresponding path program 1 times [2021-11-22 16:23:22,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:22,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197045303] [2021-11-22 16:23:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:22,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-22 16:23:22,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:22,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197045303] [2021-11-22 16:23:22,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197045303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:22,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:22,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:23:22,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913873910] [2021-11-22 16:23:22,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:22,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:22,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:22,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:22,929 INFO L87 Difference]: Start difference. First operand 328 states and 446 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:22,968 INFO L93 Difference]: Finished difference Result 517 states and 722 transitions. [2021-11-22 16:23:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 115 [2021-11-22 16:23:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:22,971 INFO L225 Difference]: With dead ends: 517 [2021-11-22 16:23:22,971 INFO L226 Difference]: Without dead ends: 328 [2021-11-22 16:23:22,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:22,974 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:22,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1009 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-22 16:23:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2021-11-22 16:23:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 322 states have (on average 1.375776397515528) internal successors, (443), 327 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 443 transitions. [2021-11-22 16:23:22,986 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 443 transitions. Word has length 115 [2021-11-22 16:23:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:22,986 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 443 transitions. [2021-11-22 16:23:22,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:22,987 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 443 transitions. [2021-11-22 16:23:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-22 16:23:22,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:22,988 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:22,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 16:23:22,989 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:22,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:22,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1095463800, now seen corresponding path program 1 times [2021-11-22 16:23:22,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:22,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104160103] [2021-11-22 16:23:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:22,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:23,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:23,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104160103] [2021-11-22 16:23:23,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104160103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:23,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:23,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:23,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650148566] [2021-11-22 16:23:23,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:23,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:23,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,045 INFO L87 Difference]: Start difference. First operand 328 states and 443 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) [2021-11-22 16:23:23,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:23,073 INFO L93 Difference]: Finished difference Result 656 states and 929 transitions. [2021-11-22 16:23:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:23,074 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 138 [2021-11-22 16:23:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:23,077 INFO L225 Difference]: With dead ends: 656 [2021-11-22 16:23:23,077 INFO L226 Difference]: Without dead ends: 472 [2021-11-22 16:23:23,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,078 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 239 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:23,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [239 Valid, 631 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:23,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-22 16:23:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 322. [2021-11-22 16:23:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 1.3690851735015772) internal successors, (434), 321 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 434 transitions. [2021-11-22 16:23:23,098 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 434 transitions. Word has length 138 [2021-11-22 16:23:23,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:23,098 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 434 transitions. [2021-11-22 16:23:23,098 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) [2021-11-22 16:23:23,098 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 434 transitions. [2021-11-22 16:23:23,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-22 16:23:23,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:23,100 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:23,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 16:23:23,100 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:23,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash 828503840, now seen corresponding path program 1 times [2021-11-22 16:23:23,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:23,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326130636] [2021-11-22 16:23:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:23,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:23,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:23,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326130636] [2021-11-22 16:23:23,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326130636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:23,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:23,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:23,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117252679] [2021-11-22 16:23:23,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:23,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:23,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:23,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:23,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,168 INFO L87 Difference]: Start difference. First operand 322 states and 434 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:23,195 INFO L93 Difference]: Finished difference Result 632 states and 895 transitions. [2021-11-22 16:23:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:23,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 [2021-11-22 16:23:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:23,198 INFO L225 Difference]: With dead ends: 632 [2021-11-22 16:23:23,198 INFO L226 Difference]: Without dead ends: 454 [2021-11-22 16:23:23,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,200 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 222 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:23,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 822 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:23,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-22 16:23:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 317. [2021-11-22 16:23:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 313 states have (on average 1.3610223642172523) internal successors, (426), 316 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 426 transitions. [2021-11-22 16:23:23,217 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 426 transitions. Word has length 144 [2021-11-22 16:23:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:23,217 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 426 transitions. [2021-11-22 16:23:23,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 426 transitions. [2021-11-22 16:23:23,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-22 16:23:23,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:23,219 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:23,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 16:23:23,220 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:23,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2036828493, now seen corresponding path program 1 times [2021-11-22 16:23:23,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:23,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630703793] [2021-11-22 16:23:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:23,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:23,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:23,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630703793] [2021-11-22 16:23:23,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630703793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:23,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:23,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:23,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753192242] [2021-11-22 16:23:23,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:23,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:23,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,289 INFO L87 Difference]: Start difference. First operand 317 states and 426 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:23,310 INFO L93 Difference]: Finished difference Result 487 states and 677 transitions. [2021-11-22 16:23:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 151 [2021-11-22 16:23:23,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:23,313 INFO L225 Difference]: With dead ends: 487 [2021-11-22 16:23:23,314 INFO L226 Difference]: Without dead ends: 314 [2021-11-22 16:23:23,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,315 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 205 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:23,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 419 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-22 16:23:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 313. [2021-11-22 16:23:23,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 310 states have (on average 1.3516129032258064) internal successors, (419), 312 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 419 transitions. [2021-11-22 16:23:23,329 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 419 transitions. Word has length 151 [2021-11-22 16:23:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:23,329 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 419 transitions. [2021-11-22 16:23:23,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 419 transitions. [2021-11-22 16:23:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-22 16:23:23,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:23,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:23,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 16:23:23,332 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:23,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:23,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1880988667, now seen corresponding path program 1 times [2021-11-22 16:23:23,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:23,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526719025] [2021-11-22 16:23:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:23,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:23,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:23,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526719025] [2021-11-22 16:23:23,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526719025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:23,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:23,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:23,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289524967] [2021-11-22 16:23:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:23,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:23,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,396 INFO L87 Difference]: Start difference. First operand 313 states and 419 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:23,411 INFO L93 Difference]: Finished difference Result 538 states and 746 transitions. [2021-11-22 16:23:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:23,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 160 [2021-11-22 16:23:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:23,414 INFO L225 Difference]: With dead ends: 538 [2021-11-22 16:23:23,414 INFO L226 Difference]: Without dead ends: 369 [2021-11-22 16:23:23,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,416 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 241 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:23,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 548 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-11-22 16:23:23,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 309. [2021-11-22 16:23:23,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.3485342019543973) internal successors, (414), 308 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 414 transitions. [2021-11-22 16:23:23,454 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 414 transitions. Word has length 160 [2021-11-22 16:23:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:23,455 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 414 transitions. [2021-11-22 16:23:23,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 414 transitions. [2021-11-22 16:23:23,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-22 16:23:23,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:23,458 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:23,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 16:23:23,458 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:23,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1022969672, now seen corresponding path program 1 times [2021-11-22 16:23:23,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:23,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389751640] [2021-11-22 16:23:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:23,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:23,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:23,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389751640] [2021-11-22 16:23:23,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389751640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:23,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:23,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:23:23,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947442547] [2021-11-22 16:23:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:23,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:23,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:23,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:23,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:23,586 INFO L87 Difference]: Start difference. First operand 309 states and 414 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) [2021-11-22 16:23:23,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:23,680 INFO L93 Difference]: Finished difference Result 670 states and 933 transitions. [2021-11-22 16:23:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:23:23,682 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 162 [2021-11-22 16:23:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:23,685 INFO L225 Difference]: With dead ends: 670 [2021-11-22 16:23:23,686 INFO L226 Difference]: Without dead ends: 505 [2021-11-22 16:23:23,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:23,687 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 351 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:23,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 845 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-22 16:23:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 402. [2021-11-22 16:23:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 400 states have (on average 1.3575) internal successors, (543), 401 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 543 transitions. [2021-11-22 16:23:23,712 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 543 transitions. Word has length 162 [2021-11-22 16:23:23,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:23,713 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 543 transitions. [2021-11-22 16:23:23,713 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) [2021-11-22 16:23:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 543 transitions. [2021-11-22 16:23:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-22 16:23:23,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:23,715 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:23,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 16:23:23,716 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:23,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1932702937, now seen corresponding path program 1 times [2021-11-22 16:23:23,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:23,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514975624] [2021-11-22 16:23:23,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:23,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:23,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:23,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514975624] [2021-11-22 16:23:23,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514975624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:23,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:23,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:23,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387537602] [2021-11-22 16:23:23,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:23,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:23,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:23,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:23,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,797 INFO L87 Difference]: Start difference. First operand 402 states and 543 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:23,844 INFO L93 Difference]: Finished difference Result 840 states and 1178 transitions. [2021-11-22 16:23:23,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:23,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 182 [2021-11-22 16:23:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:23,849 INFO L225 Difference]: With dead ends: 840 [2021-11-22 16:23:23,849 INFO L226 Difference]: Without dead ends: 629 [2021-11-22 16:23:23,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,851 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 200 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:23,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 611 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:23,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-11-22 16:23:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 488. [2021-11-22 16:23:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 486 states have (on average 1.3559670781893005) internal successors, (659), 487 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 659 transitions. [2021-11-22 16:23:23,883 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 659 transitions. Word has length 182 [2021-11-22 16:23:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:23,883 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 659 transitions. [2021-11-22 16:23:23,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 659 transitions. [2021-11-22 16:23:23,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-22 16:23:23,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:23,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:23,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 16:23:23,887 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:23,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:23,887 INFO L85 PathProgramCache]: Analyzing trace with hash -533242506, now seen corresponding path program 1 times [2021-11-22 16:23:23,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:23,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81253744] [2021-11-22 16:23:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:23,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:23,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:23,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81253744] [2021-11-22 16:23:23,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81253744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:23,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:23,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:23,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446938454] [2021-11-22 16:23:23,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:23,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:23,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:23,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:23,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:23,972 INFO L87 Difference]: Start difference. First operand 488 states and 659 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:24,023 INFO L93 Difference]: Finished difference Result 1022 states and 1427 transitions. [2021-11-22 16:23:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:24,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 [2021-11-22 16:23:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:24,028 INFO L225 Difference]: With dead ends: 1022 [2021-11-22 16:23:24,028 INFO L226 Difference]: Without dead ends: 758 [2021-11-22 16:23:24,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:24,031 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 205 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:24,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 632 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-22 16:23:24,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 602. [2021-11-22 16:23:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 600 states have (on average 1.3583333333333334) internal successors, (815), 601 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 815 transitions. [2021-11-22 16:23:24,098 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 815 transitions. Word has length 183 [2021-11-22 16:23:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:24,099 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 815 transitions. [2021-11-22 16:23:24,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 815 transitions. [2021-11-22 16:23:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-22 16:23:24,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:24,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:24,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 16:23:24,102 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:24,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:24,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1268486764, now seen corresponding path program 1 times [2021-11-22 16:23:24,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:24,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539082902] [2021-11-22 16:23:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:24,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:24,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:24,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539082902] [2021-11-22 16:23:24,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539082902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:24,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:24,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:24,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345687647] [2021-11-22 16:23:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:24,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:24,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:24,192 INFO L87 Difference]: Start difference. First operand 602 states and 815 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:24,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:24,251 INFO L93 Difference]: Finished difference Result 1234 states and 1727 transitions. [2021-11-22 16:23:24,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:24,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 184 [2021-11-22 16:23:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:24,257 INFO L225 Difference]: With dead ends: 1234 [2021-11-22 16:23:24,257 INFO L226 Difference]: Without dead ends: 892 [2021-11-22 16:23:24,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:24,259 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 211 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:24,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 654 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:24,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-22 16:23:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 704. [2021-11-22 16:23:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 702 states have (on average 1.3717948717948718) internal successors, (963), 703 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 963 transitions. [2021-11-22 16:23:24,299 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 963 transitions. Word has length 184 [2021-11-22 16:23:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:24,300 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 963 transitions. [2021-11-22 16:23:24,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 963 transitions. [2021-11-22 16:23:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-22 16:23:24,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:24,303 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:24,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 16:23:24,303 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1049632046, now seen corresponding path program 1 times [2021-11-22 16:23:24,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:24,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996382360] [2021-11-22 16:23:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:24,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:24,425 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-22 16:23:24,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:24,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996382360] [2021-11-22 16:23:24,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996382360] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:23:24,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014173669] [2021-11-22 16:23:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:24,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:24,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:24,428 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:23:24,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 16:23:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:24,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:23:24,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:24,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:23:24,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014173669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:24,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 16:23:24,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 16:23:24,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507271280] [2021-11-22 16:23:24,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:24,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:24,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:24,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:24,956 INFO L87 Difference]: Start difference. First operand 704 states and 963 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:25,080 INFO L93 Difference]: Finished difference Result 1425 states and 1940 transitions. [2021-11-22 16:23:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:25,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 184 [2021-11-22 16:23:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:25,086 INFO L225 Difference]: With dead ends: 1425 [2021-11-22 16:23:25,087 INFO L226 Difference]: Without dead ends: 989 [2021-11-22 16:23:25,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:25,088 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 276 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:25,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 546 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2021-11-22 16:23:25,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 704. [2021-11-22 16:23:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 702 states have (on average 1.358974358974359) internal successors, (954), 703 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 954 transitions. [2021-11-22 16:23:25,132 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 954 transitions. Word has length 184 [2021-11-22 16:23:25,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:25,132 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 954 transitions. [2021-11-22 16:23:25,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:25,133 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 954 transitions. [2021-11-22 16:23:25,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-22 16:23:25,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:25,136 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:25,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:25,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:25,355 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:25,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1633331672, now seen corresponding path program 1 times [2021-11-22 16:23:25,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:25,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81400420] [2021-11-22 16:23:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:25,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-22 16:23:25,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81400420] [2021-11-22 16:23:25,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81400420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:23:25,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9927493] [2021-11-22 16:23:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:25,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:25,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:25,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:23:25,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 16:23:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:25,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 16:23:25,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:25,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:23:25,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9927493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:25,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 16:23:25,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 16:23:25,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608014613] [2021-11-22 16:23:25,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:25,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:25,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:25,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:25,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:25,867 INFO L87 Difference]: Start difference. First operand 704 states and 954 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:25,997 INFO L93 Difference]: Finished difference Result 1688 states and 2323 transitions. [2021-11-22 16:23:25,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:25,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 185 [2021-11-22 16:23:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:26,005 INFO L225 Difference]: With dead ends: 1688 [2021-11-22 16:23:26,005 INFO L226 Difference]: Without dead ends: 1252 [2021-11-22 16:23:26,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:26,011 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 199 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:26,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 757 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-11-22 16:23:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 704. [2021-11-22 16:23:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 702 states have (on average 1.3575498575498575) internal successors, (953), 703 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 953 transitions. [2021-11-22 16:23:26,097 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 953 transitions. Word has length 185 [2021-11-22 16:23:26,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:26,097 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 953 transitions. [2021-11-22 16:23:26,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 953 transitions. [2021-11-22 16:23:26,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-22 16:23:26,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:26,101 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:26,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:26,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:26,315 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:26,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash -700865380, now seen corresponding path program 1 times [2021-11-22 16:23:26,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:26,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125326863] [2021-11-22 16:23:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:26,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:26,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:26,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125326863] [2021-11-22 16:23:26,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125326863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:26,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:26,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:23:26,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716085026] [2021-11-22 16:23:26,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:26,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:26,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:26,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:26,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:26,448 INFO L87 Difference]: Start difference. First operand 704 states and 953 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:26,570 INFO L93 Difference]: Finished difference Result 1174 states and 1609 transitions. [2021-11-22 16:23:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:23:26,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 186 [2021-11-22 16:23:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:26,578 INFO L225 Difference]: With dead ends: 1174 [2021-11-22 16:23:26,579 INFO L226 Difference]: Without dead ends: 1172 [2021-11-22 16:23:26,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:26,580 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 319 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:26,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [319 Valid, 1236 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:26,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-22 16:23:26,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 706. [2021-11-22 16:23:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 704 states have (on average 1.3565340909090908) internal successors, (955), 705 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 955 transitions. [2021-11-22 16:23:26,647 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 955 transitions. Word has length 186 [2021-11-22 16:23:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:26,648 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 955 transitions. [2021-11-22 16:23:26,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 955 transitions. [2021-11-22 16:23:26,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-22 16:23:26,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:26,652 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:26,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 16:23:26,652 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash 318324320, now seen corresponding path program 1 times [2021-11-22 16:23:26,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:26,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626223725] [2021-11-22 16:23:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:26,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:26,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:26,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626223725] [2021-11-22 16:23:26,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626223725] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:26,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:26,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:26,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423966484] [2021-11-22 16:23:26,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:26,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:26,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:26,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:26,722 INFO L87 Difference]: Start difference. First operand 706 states and 955 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:26,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:26,829 INFO L93 Difference]: Finished difference Result 1429 states and 1924 transitions. [2021-11-22 16:23:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:26,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 189 [2021-11-22 16:23:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:26,836 INFO L225 Difference]: With dead ends: 1429 [2021-11-22 16:23:26,836 INFO L226 Difference]: Without dead ends: 991 [2021-11-22 16:23:26,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:26,838 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 268 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:26,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 545 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-11-22 16:23:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 706. [2021-11-22 16:23:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 704 states have (on average 1.34375) internal successors, (946), 705 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:26,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 946 transitions. [2021-11-22 16:23:26,919 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 946 transitions. Word has length 189 [2021-11-22 16:23:26,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:26,919 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 946 transitions. [2021-11-22 16:23:26,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:26,920 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 946 transitions. [2021-11-22 16:23:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-22 16:23:26,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:26,923 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:26,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 16:23:26,924 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:26,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash 261066018, now seen corresponding path program 1 times [2021-11-22 16:23:26,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:26,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543404438] [2021-11-22 16:23:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:26,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-22 16:23:27,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:27,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543404438] [2021-11-22 16:23:27,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543404438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:23:27,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539093597] [2021-11-22 16:23:27,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:27,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:27,079 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:23:27,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 16:23:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:27,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 16:23:27,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-22 16:23:27,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:27,916 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-22 16:23:27,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539093597] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:23:27,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:23:27,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2021-11-22 16:23:27,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264443033] [2021-11-22 16:23:27,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:23:27,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 16:23:27,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:27,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 16:23:27,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-22 16:23:27,919 INFO L87 Difference]: Start difference. First operand 706 states and 946 transitions. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:28,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:28,779 INFO L93 Difference]: Finished difference Result 4414 states and 6145 transitions. [2021-11-22 16:23:28,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 16:23:28,779 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 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 189 [2021-11-22 16:23:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:28,801 INFO L225 Difference]: With dead ends: 4414 [2021-11-22 16:23:28,802 INFO L226 Difference]: Without dead ends: 3976 [2021-11-22 16:23:28,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2021-11-22 16:23:28,805 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 4210 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4210 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:28,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4210 Valid, 3908 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 16:23:28,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3976 states. [2021-11-22 16:23:28,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3976 to 962. [2021-11-22 16:23:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 960 states have (on average 1.3239583333333333) internal successors, (1271), 961 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1271 transitions. [2021-11-22 16:23:28,907 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1271 transitions. Word has length 189 [2021-11-22 16:23:28,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:28,907 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 1271 transitions. [2021-11-22 16:23:28,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1271 transitions. [2021-11-22 16:23:28,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-22 16:23:28,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:28,911 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:28,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:29,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-22 16:23:29,127 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:29,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1018797660, now seen corresponding path program 1 times [2021-11-22 16:23:29,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:29,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634052873] [2021-11-22 16:23:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:29,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:29,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:29,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634052873] [2021-11-22 16:23:29,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634052873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:29,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:29,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:29,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314944984] [2021-11-22 16:23:29,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:29,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:29,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:29,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:29,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:29,226 INFO L87 Difference]: Start difference. First operand 962 states and 1271 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:29,395 INFO L93 Difference]: Finished difference Result 2178 states and 2911 transitions. [2021-11-22 16:23:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:29,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 189 [2021-11-22 16:23:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:29,418 INFO L225 Difference]: With dead ends: 2178 [2021-11-22 16:23:29,426 INFO L226 Difference]: Without dead ends: 1740 [2021-11-22 16:23:29,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:29,428 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 191 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:29,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 739 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:29,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2021-11-22 16:23:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 962. [2021-11-22 16:23:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 960 states have (on average 1.321875) internal successors, (1269), 961 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1269 transitions. [2021-11-22 16:23:29,511 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1269 transitions. Word has length 189 [2021-11-22 16:23:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:29,511 INFO L470 AbstractCegarLoop]: Abstraction has 962 states and 1269 transitions. [2021-11-22 16:23:29,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1269 transitions. [2021-11-22 16:23:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-22 16:23:29,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:29,515 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:29,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 16:23:29,516 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash 229374270, now seen corresponding path program 1 times [2021-11-22 16:23:29,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:29,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736943471] [2021-11-22 16:23:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:29,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-22 16:23:29,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:29,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736943471] [2021-11-22 16:23:29,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736943471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:29,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:29,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:23:29,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855384531] [2021-11-22 16:23:29,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:29,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:23:29,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:29,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:23:29,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:29,565 INFO L87 Difference]: Start difference. First operand 962 states and 1269 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:29,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:29,662 INFO L93 Difference]: Finished difference Result 1631 states and 2165 transitions. [2021-11-22 16:23:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:23:29,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 192 [2021-11-22 16:23:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:29,666 INFO L225 Difference]: With dead ends: 1631 [2021-11-22 16:23:29,666 INFO L226 Difference]: Without dead ends: 790 [2021-11-22 16:23:29,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:23:29,668 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 205 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:29,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 325 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-22 16:23:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 789. [2021-11-22 16:23:29,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 787 states have (on average 1.2986022871664549) internal successors, (1022), 788 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:29,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1022 transitions. [2021-11-22 16:23:29,760 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1022 transitions. Word has length 192 [2021-11-22 16:23:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:29,761 INFO L470 AbstractCegarLoop]: Abstraction has 789 states and 1022 transitions. [2021-11-22 16:23:29,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1022 transitions. [2021-11-22 16:23:29,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-22 16:23:29,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:29,765 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:29,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 16:23:29,765 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:29,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:29,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1147177944, now seen corresponding path program 1 times [2021-11-22 16:23:29,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:29,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55093642] [2021-11-22 16:23:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:29,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:29,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:29,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55093642] [2021-11-22 16:23:29,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55093642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:29,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:29,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 16:23:29,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019787299] [2021-11-22 16:23:29,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:29,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 16:23:29,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 16:23:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:23:29,947 INFO L87 Difference]: Start difference. First operand 789 states and 1022 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:31,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:31,052 INFO L93 Difference]: Finished difference Result 2713 states and 3584 transitions. [2021-11-22 16:23:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-22 16:23:31,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 197 [2021-11-22 16:23:31,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:31,058 INFO L225 Difference]: With dead ends: 2713 [2021-11-22 16:23:31,059 INFO L226 Difference]: Without dead ends: 2286 [2021-11-22 16:23:31,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 16:23:31,061 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1706 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:31,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 2648 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 16:23:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2021-11-22 16:23:31,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 997. [2021-11-22 16:23:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 995 states have (on average 1.2733668341708542) internal successors, (1267), 996 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1267 transitions. [2021-11-22 16:23:31,189 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1267 transitions. Word has length 197 [2021-11-22 16:23:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:31,189 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1267 transitions. [2021-11-22 16:23:31,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1267 transitions. [2021-11-22 16:23:31,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-22 16:23:31,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:31,193 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:31,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 16:23:31,194 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:31,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:31,195 INFO L85 PathProgramCache]: Analyzing trace with hash -899031450, now seen corresponding path program 1 times [2021-11-22 16:23:31,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:31,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849107296] [2021-11-22 16:23:31,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:31,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:31,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:31,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849107296] [2021-11-22 16:23:31,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849107296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:31,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:31,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:23:31,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620180230] [2021-11-22 16:23:31,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:31,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:31,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:31,312 INFO L87 Difference]: Start difference. First operand 997 states and 1267 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:31,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:31,515 INFO L93 Difference]: Finished difference Result 1880 states and 2402 transitions. [2021-11-22 16:23:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:23:31,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 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 197 [2021-11-22 16:23:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:31,519 INFO L225 Difference]: With dead ends: 1880 [2021-11-22 16:23:31,519 INFO L226 Difference]: Without dead ends: 1245 [2021-11-22 16:23:31,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:31,522 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 258 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:31,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 744 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:31,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-11-22 16:23:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 908. [2021-11-22 16:23:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 906 states have (on average 1.2759381898454747) internal successors, (1156), 907 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1156 transitions. [2021-11-22 16:23:31,652 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1156 transitions. Word has length 197 [2021-11-22 16:23:31,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:31,653 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1156 transitions. [2021-11-22 16:23:31,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1156 transitions. [2021-11-22 16:23:31,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-22 16:23:31,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:31,657 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:31,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 16:23:31,657 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:31,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1380240734, now seen corresponding path program 1 times [2021-11-22 16:23:31,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:31,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591594651] [2021-11-22 16:23:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:31,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:31,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:31,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:31,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591594651] [2021-11-22 16:23:31,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591594651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:31,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:31,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 16:23:31,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109829002] [2021-11-22 16:23:31,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:31,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 16:23:31,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:31,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 16:23:31,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:23:31,754 INFO L87 Difference]: Start difference. First operand 908 states and 1156 transitions. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:32,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:32,066 INFO L93 Difference]: Finished difference Result 3042 states and 4010 transitions. [2021-11-22 16:23:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 16:23:32,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 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 203 [2021-11-22 16:23:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:32,073 INFO L225 Difference]: With dead ends: 3042 [2021-11-22 16:23:32,073 INFO L226 Difference]: Without dead ends: 2490 [2021-11-22 16:23:32,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:23:32,076 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 583 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:32,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2570 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2490 states. [2021-11-22 16:23:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2490 to 985. [2021-11-22 16:23:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 983 states have (on average 1.2756866734486267) internal successors, (1254), 984 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1254 transitions. [2021-11-22 16:23:32,220 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1254 transitions. Word has length 203 [2021-11-22 16:23:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:32,220 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 1254 transitions. [2021-11-22 16:23:32,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1254 transitions. [2021-11-22 16:23:32,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-22 16:23:32,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:32,224 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:32,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 16:23:32,224 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:32,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:32,225 INFO L85 PathProgramCache]: Analyzing trace with hash -621917854, now seen corresponding path program 1 times [2021-11-22 16:23:32,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:32,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277875660] [2021-11-22 16:23:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:32,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:32,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:32,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277875660] [2021-11-22 16:23:32,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277875660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:32,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:32,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 16:23:32,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729373234] [2021-11-22 16:23:32,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:32,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 16:23:32,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 16:23:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:23:32,413 INFO L87 Difference]: Start difference. First operand 985 states and 1254 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:34,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:34,473 INFO L93 Difference]: Finished difference Result 4865 states and 6161 transitions. [2021-11-22 16:23:34,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-22 16:23:34,474 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 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 203 [2021-11-22 16:23:34,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:34,483 INFO L225 Difference]: With dead ends: 4865 [2021-11-22 16:23:34,484 INFO L226 Difference]: Without dead ends: 4239 [2021-11-22 16:23:34,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=396, Invalid=1674, Unknown=0, NotChecked=0, Total=2070 [2021-11-22 16:23:34,489 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 3425 mSDsluCounter, 5697 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3425 SdHoareTripleChecker+Valid, 6252 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:34,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3425 Valid, 6252 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 16:23:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2021-11-22 16:23:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 1430. [2021-11-22 16:23:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1428 states have (on average 1.2394957983193278) internal successors, (1770), 1429 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 1770 transitions. [2021-11-22 16:23:34,710 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 1770 transitions. Word has length 203 [2021-11-22 16:23:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:34,711 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 1770 transitions. [2021-11-22 16:23:34,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:34,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 1770 transitions. [2021-11-22 16:23:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-22 16:23:34,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:34,715 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:34,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 16:23:34,716 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:34,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1950916510, now seen corresponding path program 1 times [2021-11-22 16:23:34,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:34,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996197581] [2021-11-22 16:23:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:34,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:34,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:34,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996197581] [2021-11-22 16:23:34,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996197581] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:34,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:34,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-22 16:23:34,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721330136] [2021-11-22 16:23:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:34,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 16:23:34,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:34,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 16:23:34,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-22 16:23:34,890 INFO L87 Difference]: Start difference. First operand 1430 states and 1770 transitions. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:35,990 INFO L93 Difference]: Finished difference Result 4037 states and 5035 transitions. [2021-11-22 16:23:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-22 16:23:35,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 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 203 [2021-11-22 16:23:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:35,997 INFO L225 Difference]: With dead ends: 4037 [2021-11-22 16:23:35,997 INFO L226 Difference]: Without dead ends: 2961 [2021-11-22 16:23:36,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-11-22 16:23:36,000 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1749 mSDsluCounter, 3973 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 4625 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:36,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1749 Valid, 4625 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 16:23:36,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-11-22 16:23:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 1535. [2021-11-22 16:23:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1535 states, 1533 states have (on average 1.2283105022831051) internal successors, (1883), 1534 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:36,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1535 states to 1535 states and 1883 transitions. [2021-11-22 16:23:36,220 INFO L78 Accepts]: Start accepts. Automaton has 1535 states and 1883 transitions. Word has length 203 [2021-11-22 16:23:36,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:36,221 INFO L470 AbstractCegarLoop]: Abstraction has 1535 states and 1883 transitions. [2021-11-22 16:23:36,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:36,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1535 states and 1883 transitions. [2021-11-22 16:23:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-22 16:23:36,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:36,224 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:36,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 16:23:36,224 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:36,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:36,225 INFO L85 PathProgramCache]: Analyzing trace with hash -169880232, now seen corresponding path program 1 times [2021-11-22 16:23:36,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:36,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829908906] [2021-11-22 16:23:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:36,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-22 16:23:36,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:36,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829908906] [2021-11-22 16:23:36,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829908906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:36,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:36,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:23:36,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612133725] [2021-11-22 16:23:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:36,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:36,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:23:36,296 INFO L87 Difference]: Start difference. First operand 1535 states and 1883 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:36,591 INFO L93 Difference]: Finished difference Result 2855 states and 3532 transitions. [2021-11-22 16:23:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:23:36,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 216 [2021-11-22 16:23:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:36,596 INFO L225 Difference]: With dead ends: 2855 [2021-11-22 16:23:36,596 INFO L226 Difference]: Without dead ends: 1682 [2021-11-22 16:23:36,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:23:36,599 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 542 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:36,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1012 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:36,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2021-11-22 16:23:36,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1292. [2021-11-22 16:23:36,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 1.2130131680867544) internal successors, (1566), 1291 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:36,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1566 transitions. [2021-11-22 16:23:36,773 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1566 transitions. Word has length 216 [2021-11-22 16:23:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:36,774 INFO L470 AbstractCegarLoop]: Abstraction has 1292 states and 1566 transitions. [2021-11-22 16:23:36,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:36,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1566 transitions. [2021-11-22 16:23:36,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-22 16:23:36,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:36,778 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:36,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-22 16:23:36,779 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:36,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:36,779 INFO L85 PathProgramCache]: Analyzing trace with hash -166677230, now seen corresponding path program 1 times [2021-11-22 16:23:36,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:36,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437615611] [2021-11-22 16:23:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:36,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 47 proven. 9 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-22 16:23:37,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:37,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437615611] [2021-11-22 16:23:37,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437615611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:23:37,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565561133] [2021-11-22 16:23:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:37,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:37,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:37,099 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:23:37,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 16:23:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:37,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 16:23:37,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-22 16:23:37,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:23:37,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565561133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:37,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 16:23:37,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2021-11-22 16:23:37,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047969511] [2021-11-22 16:23:37,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:37,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:23:37,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:23:37,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-22 16:23:37,766 INFO L87 Difference]: Start difference. First operand 1292 states and 1566 transitions. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:38,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:38,448 INFO L93 Difference]: Finished difference Result 3368 states and 4104 transitions. [2021-11-22 16:23:38,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 16:23:38,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 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 243 [2021-11-22 16:23:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:38,455 INFO L225 Difference]: With dead ends: 3368 [2021-11-22 16:23:38,455 INFO L226 Difference]: Without dead ends: 2443 [2021-11-22 16:23:38,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-22 16:23:38,458 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 589 mSDsluCounter, 1846 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:38,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 2298 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2021-11-22 16:23:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 1307. [2021-11-22 16:23:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1306 states have (on average 1.2120980091883613) internal successors, (1583), 1306 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1583 transitions. [2021-11-22 16:23:38,656 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1583 transitions. Word has length 243 [2021-11-22 16:23:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:38,656 INFO L470 AbstractCegarLoop]: Abstraction has 1307 states and 1583 transitions. [2021-11-22 16:23:38,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1583 transitions. [2021-11-22 16:23:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-22 16:23:38,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:38,661 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:38,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:38,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-22 16:23:38,871 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 929575580, now seen corresponding path program 1 times [2021-11-22 16:23:38,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:38,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823964518] [2021-11-22 16:23:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:38,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:39,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823964518] [2021-11-22 16:23:39,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823964518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:23:39,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791758931] [2021-11-22 16:23:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:39,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:39,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:39,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:23:39,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 16:23:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:39,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 16:23:39,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:39,717 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:39,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:40,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791758931] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:23:40,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:23:40,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2021-11-22 16:23:40,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50586543] [2021-11-22 16:23:40,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:23:40,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 16:23:40,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:40,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 16:23:40,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-22 16:23:40,243 INFO L87 Difference]: Start difference. First operand 1307 states and 1583 transitions. Second operand has 11 states, 11 states have (on average 18.636363636363637) internal successors, (205), 11 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:41,861 INFO L93 Difference]: Finished difference Result 5685 states and 6909 transitions. [2021-11-22 16:23:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 16:23:41,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.636363636363637) internal successors, (205), 11 states have internal predecessors, (205), 0 states have call successors, (0), 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 249 [2021-11-22 16:23:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:41,872 INFO L225 Difference]: With dead ends: 5685 [2021-11-22 16:23:41,872 INFO L226 Difference]: Without dead ends: 4745 [2021-11-22 16:23:41,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 493 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=555, Invalid=1995, Unknown=0, NotChecked=0, Total=2550 [2021-11-22 16:23:41,876 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 2475 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2475 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:41,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2475 Valid, 3301 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:23:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4745 states. [2021-11-22 16:23:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4745 to 1987. [2021-11-22 16:23:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1986 states have (on average 1.2220543806646527) internal successors, (2427), 1986 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:42,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2427 transitions. [2021-11-22 16:23:42,202 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2427 transitions. Word has length 249 [2021-11-22 16:23:42,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:42,203 INFO L470 AbstractCegarLoop]: Abstraction has 1987 states and 2427 transitions. [2021-11-22 16:23:42,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.636363636363637) internal successors, (205), 11 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:42,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2427 transitions. [2021-11-22 16:23:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-22 16:23:42,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:42,209 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:42,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:42,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-22 16:23:42,431 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:42,433 INFO L85 PathProgramCache]: Analyzing trace with hash 753611144, now seen corresponding path program 1 times [2021-11-22 16:23:42,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:42,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839713860] [2021-11-22 16:23:42,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:42,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:42,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:42,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839713860] [2021-11-22 16:23:42,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839713860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:23:42,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902654985] [2021-11-22 16:23:42,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:42,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:42,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:42,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:23:42,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 16:23:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:42,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 16:23:42,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:43,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:43,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902654985] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:23:43,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:23:43,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2021-11-22 16:23:43,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520584883] [2021-11-22 16:23:43,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:23:43,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-22 16:23:43,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-22 16:23:43,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-22 16:23:43,911 INFO L87 Difference]: Start difference. First operand 1987 states and 2427 transitions. Second operand has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:45,778 INFO L93 Difference]: Finished difference Result 10381 states and 12762 transitions. [2021-11-22 16:23:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-22 16:23:45,778 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 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 249 [2021-11-22 16:23:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:45,797 INFO L225 Difference]: With dead ends: 10381 [2021-11-22 16:23:45,797 INFO L226 Difference]: Without dead ends: 8809 [2021-11-22 16:23:45,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 501 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=503, Invalid=2047, Unknown=0, NotChecked=0, Total=2550 [2021-11-22 16:23:45,802 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 2773 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 4256 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:45,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2773 Valid, 4256 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 16:23:45,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8809 states. [2021-11-22 16:23:46,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8809 to 5113. [2021-11-22 16:23:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5113 states, 5112 states have (on average 1.2030516431924883) internal successors, (6150), 5112 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5113 states to 5113 states and 6150 transitions. [2021-11-22 16:23:46,599 INFO L78 Accepts]: Start accepts. Automaton has 5113 states and 6150 transitions. Word has length 249 [2021-11-22 16:23:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:46,600 INFO L470 AbstractCegarLoop]: Abstraction has 5113 states and 6150 transitions. [2021-11-22 16:23:46,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.181818181818183) internal successors, (200), 11 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:46,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5113 states and 6150 transitions. [2021-11-22 16:23:46,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-22 16:23:46,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:46,619 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:46,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:46,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-22 16:23:46,836 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash -30299112, now seen corresponding path program 1 times [2021-11-22 16:23:46,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:46,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114683720] [2021-11-22 16:23:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:46,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-22 16:23:46,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:46,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114683720] [2021-11-22 16:23:46,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114683720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:46,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:46,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 16:23:46,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736764743] [2021-11-22 16:23:46,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:46,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:23:46,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:46,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:23:46,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:23:46,960 INFO L87 Difference]: Start difference. First operand 5113 states and 6150 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:47,987 INFO L93 Difference]: Finished difference Result 11873 states and 14400 transitions. [2021-11-22 16:23:47,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:23:47,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 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 251 [2021-11-22 16:23:47,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:48,005 INFO L225 Difference]: With dead ends: 11873 [2021-11-22 16:23:48,005 INFO L226 Difference]: Without dead ends: 7271 [2021-11-22 16:23:48,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-22 16:23:48,011 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 722 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:48,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 1861 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:48,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7271 states. [2021-11-22 16:23:48,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7271 to 5805. [2021-11-22 16:23:48,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5805 states, 5804 states have (on average 1.19710544452102) internal successors, (6948), 5804 states have internal predecessors, (6948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5805 states to 5805 states and 6948 transitions. [2021-11-22 16:23:48,828 INFO L78 Accepts]: Start accepts. Automaton has 5805 states and 6948 transitions. Word has length 251 [2021-11-22 16:23:48,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:48,828 INFO L470 AbstractCegarLoop]: Abstraction has 5805 states and 6948 transitions. [2021-11-22 16:23:48,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:48,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5805 states and 6948 transitions. [2021-11-22 16:23:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-22 16:23:48,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:48,841 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:48,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-22 16:23:48,841 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:48,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:48,842 INFO L85 PathProgramCache]: Analyzing trace with hash 217847382, now seen corresponding path program 1 times [2021-11-22 16:23:48,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:48,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257545607] [2021-11-22 16:23:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:48,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-22 16:23:48,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:48,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257545607] [2021-11-22 16:23:48,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257545607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:48,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:23:48,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 16:23:48,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111084068] [2021-11-22 16:23:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:48,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:23:48,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:23:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:23:48,940 INFO L87 Difference]: Start difference. First operand 5805 states and 6948 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:50,127 INFO L93 Difference]: Finished difference Result 13465 states and 16276 transitions. [2021-11-22 16:23:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:23:50,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 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 251 [2021-11-22 16:23:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:50,145 INFO L225 Difference]: With dead ends: 13465 [2021-11-22 16:23:50,145 INFO L226 Difference]: Without dead ends: 8171 [2021-11-22 16:23:50,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-22 16:23:50,153 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 655 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:50,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 2146 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:23:50,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2021-11-22 16:23:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 6705. [2021-11-22 16:23:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6705 states, 6704 states have (on average 1.1971957040572792) internal successors, (8026), 6704 states have internal predecessors, (8026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 8026 transitions. [2021-11-22 16:23:51,008 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 8026 transitions. Word has length 251 [2021-11-22 16:23:51,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:51,009 INFO L470 AbstractCegarLoop]: Abstraction has 6705 states and 8026 transitions. [2021-11-22 16:23:51,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 8026 transitions. [2021-11-22 16:23:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-22 16:23:51,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:51,023 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:51,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-22 16:23:51,023 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:51,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:51,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1349034618, now seen corresponding path program 1 times [2021-11-22 16:23:51,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:51,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853422619] [2021-11-22 16:23:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:51,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:51,217 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 21 proven. 22 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:51,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:51,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853422619] [2021-11-22 16:23:51,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853422619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:23:51,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522605062] [2021-11-22 16:23:51,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:51,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:51,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:51,223 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:23:51,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 16:23:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:51,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-22 16:23:51,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-22 16:23:51,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:23:51,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522605062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:23:51,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 16:23:51,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2021-11-22 16:23:51,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348117826] [2021-11-22 16:23:51,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:23:51,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:23:51,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:51,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:23:51,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:23:51,719 INFO L87 Difference]: Start difference. First operand 6705 states and 8026 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:52,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:23:52,573 INFO L93 Difference]: Finished difference Result 12991 states and 15557 transitions. [2021-11-22 16:23:52,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:23:52,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 251 [2021-11-22 16:23:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:23:52,586 INFO L225 Difference]: With dead ends: 12991 [2021-11-22 16:23:52,587 INFO L226 Difference]: Without dead ends: 6495 [2021-11-22 16:23:52,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-22 16:23:52,599 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 1 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:23:52,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 775 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:23:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6495 states. [2021-11-22 16:23:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6495 to 6495. [2021-11-22 16:23:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6495 states, 6494 states have (on average 1.1878657222051123) internal successors, (7714), 6494 states have internal predecessors, (7714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6495 states to 6495 states and 7714 transitions. [2021-11-22 16:23:53,516 INFO L78 Accepts]: Start accepts. Automaton has 6495 states and 7714 transitions. Word has length 251 [2021-11-22 16:23:53,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:23:53,516 INFO L470 AbstractCegarLoop]: Abstraction has 6495 states and 7714 transitions. [2021-11-22 16:23:53,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:23:53,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6495 states and 7714 transitions. [2021-11-22 16:23:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-22 16:23:53,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:23:53,530 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:23:53,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-22 16:23:53,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-11-22 16:23:53,755 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:23:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:23:53,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2104129192, now seen corresponding path program 1 times [2021-11-22 16:23:53,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:23:53,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253362829] [2021-11-22 16:23:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:53,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:23:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:23:53,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:23:53,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253362829] [2021-11-22 16:23:53,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253362829] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:23:53,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698339465] [2021-11-22 16:23:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:23:53,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:23:53,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:23:53,935 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:23:53,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 16:23:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:23:54,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 16:23:54,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:23:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 41 proven. 13 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-22 16:23:54,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:23:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 45 proven. 11 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-22 16:23:55,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698339465] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:23:55,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:23:55,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 11] total 20 [2021-11-22 16:23:55,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376435726] [2021-11-22 16:23:55,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:23:55,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 16:23:55,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:23:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 16:23:55,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-11-22 16:23:55,364 INFO L87 Difference]: Start difference. First operand 6495 states and 7714 transitions. Second operand has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:06,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:06,389 INFO L93 Difference]: Finished difference Result 54860 states and 67428 transitions. [2021-11-22 16:24:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-11-22 16:24:06,390 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 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 253 [2021-11-22 16:24:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:06,446 INFO L225 Difference]: With dead ends: 54860 [2021-11-22 16:24:06,446 INFO L226 Difference]: Without dead ends: 48820 [2021-11-22 16:24:06,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6109 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2485, Invalid=15337, Unknown=0, NotChecked=0, Total=17822 [2021-11-22 16:24:06,462 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 7459 mSDsluCounter, 7729 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7459 SdHoareTripleChecker+Valid, 8528 SdHoareTripleChecker+Invalid, 2128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:06,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7459 Valid, 8528 Invalid, 2128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 16:24:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48820 states. [2021-11-22 16:24:08,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48820 to 13507. [2021-11-22 16:24:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13507 states, 13506 states have (on average 1.1965052569228491) internal successors, (16160), 13506 states have internal predecessors, (16160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13507 states to 13507 states and 16160 transitions. [2021-11-22 16:24:08,521 INFO L78 Accepts]: Start accepts. Automaton has 13507 states and 16160 transitions. Word has length 253 [2021-11-22 16:24:08,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:08,522 INFO L470 AbstractCegarLoop]: Abstraction has 13507 states and 16160 transitions. [2021-11-22 16:24:08,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.55) internal successors, (331), 20 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 13507 states and 16160 transitions. [2021-11-22 16:24:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-22 16:24:08,546 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:08,547 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:24:08,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:08,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:08,763 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:24:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:08,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2092151141, now seen corresponding path program 1 times [2021-11-22 16:24:08,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:08,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454947329] [2021-11-22 16:24:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:08,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-22 16:24:08,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:24:08,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454947329] [2021-11-22 16:24:08,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454947329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:08,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:08,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:24:08,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060217341] [2021-11-22 16:24:08,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:08,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:24:08,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:24:08,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:24:08,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:24:08,812 INFO L87 Difference]: Start difference. First operand 13507 states and 16160 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:10,634 INFO L93 Difference]: Finished difference Result 26540 states and 31749 transitions. [2021-11-22 16:24:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:24:10,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 256 [2021-11-22 16:24:10,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:10,651 INFO L225 Difference]: With dead ends: 26540 [2021-11-22 16:24:10,651 INFO L226 Difference]: Without dead ends: 13046 [2021-11-22 16:24:10,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:24:10,663 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 126 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:10,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 434 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:24:10,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13046 states. [2021-11-22 16:24:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13046 to 13046. [2021-11-22 16:24:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13046 states, 13045 states have (on average 1.1954771943273286) internal successors, (15595), 13045 states have internal predecessors, (15595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13046 states to 13046 states and 15595 transitions. [2021-11-22 16:24:12,669 INFO L78 Accepts]: Start accepts. Automaton has 13046 states and 15595 transitions. Word has length 256 [2021-11-22 16:24:12,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:12,669 INFO L470 AbstractCegarLoop]: Abstraction has 13046 states and 15595 transitions. [2021-11-22 16:24:12,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:12,669 INFO L276 IsEmpty]: Start isEmpty. Operand 13046 states and 15595 transitions. [2021-11-22 16:24:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-22 16:24:12,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:12,689 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:24:12,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-22 16:24:12,690 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:24:12,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:12,690 INFO L85 PathProgramCache]: Analyzing trace with hash -197705696, now seen corresponding path program 1 times [2021-11-22 16:24:12,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:12,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633579516] [2021-11-22 16:24:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:12,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 53 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:24:12,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:24:12,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633579516] [2021-11-22 16:24:12,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633579516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:24:12,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437949231] [2021-11-22 16:24:12,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:12,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:12,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:24:12,920 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:24:12,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-22 16:24:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:13,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 16:24:13,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-22 16:24:13,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:24:13,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437949231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:13,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 16:24:13,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 18 [2021-11-22 16:24:13,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863865911] [2021-11-22 16:24:13,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:13,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:24:13,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:24:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:24:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-11-22 16:24:13,565 INFO L87 Difference]: Start difference. First operand 13046 states and 15595 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:18,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:18,055 INFO L93 Difference]: Finished difference Result 40762 states and 49243 transitions. [2021-11-22 16:24:18,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 16:24:18,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 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 259 [2021-11-22 16:24:18,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:18,090 INFO L225 Difference]: With dead ends: 40762 [2021-11-22 16:24:18,090 INFO L226 Difference]: Without dead ends: 28486 [2021-11-22 16:24:18,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2021-11-22 16:24:18,103 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 848 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:18,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 2205 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:24:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28486 states. [2021-11-22 16:24:19,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28486 to 11179. [2021-11-22 16:24:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11179 states, 11178 states have (on average 1.1968151726605833) internal successors, (13378), 11178 states have internal predecessors, (13378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:19,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11179 states to 11179 states and 13378 transitions. [2021-11-22 16:24:19,683 INFO L78 Accepts]: Start accepts. Automaton has 11179 states and 13378 transitions. Word has length 259 [2021-11-22 16:24:19,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:19,684 INFO L470 AbstractCegarLoop]: Abstraction has 11179 states and 13378 transitions. [2021-11-22 16:24:19,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 11179 states and 13378 transitions. [2021-11-22 16:24:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-22 16:24:19,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:19,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:24:19,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:19,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:19,915 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:24:19,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash -450518684, now seen corresponding path program 1 times [2021-11-22 16:24:19,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:19,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962565602] [2021-11-22 16:24:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:19,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-22 16:24:20,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:24:20,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962565602] [2021-11-22 16:24:20,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962565602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:20,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:20,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:24:20,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991217946] [2021-11-22 16:24:20,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:20,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:24:20,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:24:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:24:20,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:24:20,065 INFO L87 Difference]: Start difference. First operand 11179 states and 13378 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:21,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:21,978 INFO L93 Difference]: Finished difference Result 21864 states and 26207 transitions. [2021-11-22 16:24:21,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:24:21,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 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 259 [2021-11-22 16:24:21,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:21,990 INFO L225 Difference]: With dead ends: 21864 [2021-11-22 16:24:21,990 INFO L226 Difference]: Without dead ends: 11179 [2021-11-22 16:24:21,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:24:21,997 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 202 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:21,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 451 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:24:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11179 states. [2021-11-22 16:24:23,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11179 to 11179. [2021-11-22 16:24:23,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11179 states, 11178 states have (on average 1.1960100196815173) internal successors, (13369), 11178 states have internal predecessors, (13369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11179 states to 11179 states and 13369 transitions. [2021-11-22 16:24:23,570 INFO L78 Accepts]: Start accepts. Automaton has 11179 states and 13369 transitions. Word has length 259 [2021-11-22 16:24:23,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:23,571 INFO L470 AbstractCegarLoop]: Abstraction has 11179 states and 13369 transitions. [2021-11-22 16:24:23,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11179 states and 13369 transitions. [2021-11-22 16:24:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-22 16:24:23,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:23,581 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:24:23,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-22 16:24:23,582 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:24:23,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash 887200209, now seen corresponding path program 1 times [2021-11-22 16:24:23,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:23,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776052008] [2021-11-22 16:24:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:23,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:24:23,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:24:23,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776052008] [2021-11-22 16:24:23,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776052008] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:24:23,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225639623] [2021-11-22 16:24:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:23,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:23,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:24:23,864 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:24:23,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-22 16:24:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:24,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 16:24:24,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 35 proven. 33 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-22 16:24:25,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:24:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 35 proven. 20 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-22 16:24:26,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225639623] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:24:26,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:24:26,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 13] total 34 [2021-11-22 16:24:26,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96382146] [2021-11-22 16:24:26,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:24:26,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-22 16:24:26,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:24:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-22 16:24:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1008, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 16:24:26,331 INFO L87 Difference]: Start difference. First operand 11179 states and 13369 transitions. Second operand has 34 states, 34 states have (on average 13.470588235294118) internal successors, (458), 34 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:44,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:44,671 INFO L93 Difference]: Finished difference Result 67754 states and 83243 transitions. [2021-11-22 16:24:44,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-11-22 16:24:44,671 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 13.470588235294118) internal successors, (458), 34 states have internal predecessors, (458), 0 states have call successors, (0), 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 260 [2021-11-22 16:24:44,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:44,744 INFO L225 Difference]: With dead ends: 67754 [2021-11-22 16:24:44,744 INFO L226 Difference]: Without dead ends: 57257 [2021-11-22 16:24:44,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5995 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2290, Invalid=16892, Unknown=0, NotChecked=0, Total=19182 [2021-11-22 16:24:44,761 INFO L933 BasicCegarLoop]: 1469 mSDtfsCounter, 5282 mSDsluCounter, 22710 mSDsCounter, 0 mSdLazyCounter, 5112 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5282 SdHoareTripleChecker+Valid, 24179 SdHoareTripleChecker+Invalid, 5323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 5112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:44,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5282 Valid, 24179 Invalid, 5323 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [211 Valid, 5112 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-22 16:24:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57257 states. [2021-11-22 16:24:47,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57257 to 15836. [2021-11-22 16:24:47,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15836 states, 15835 states have (on average 1.1999368487527629) internal successors, (19001), 15835 states have internal predecessors, (19001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:47,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15836 states to 15836 states and 19001 transitions. [2021-11-22 16:24:47,349 INFO L78 Accepts]: Start accepts. Automaton has 15836 states and 19001 transitions. Word has length 260 [2021-11-22 16:24:47,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:47,350 INFO L470 AbstractCegarLoop]: Abstraction has 15836 states and 19001 transitions. [2021-11-22 16:24:47,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 13.470588235294118) internal successors, (458), 34 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:47,350 INFO L276 IsEmpty]: Start isEmpty. Operand 15836 states and 19001 transitions. [2021-11-22 16:24:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-22 16:24:47,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:47,366 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:24:47,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:47,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:47,567 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:24:47,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:47,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1001876329, now seen corresponding path program 1 times [2021-11-22 16:24:47,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:47,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231307115] [2021-11-22 16:24:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:47,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-22 16:24:47,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:24:47,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231307115] [2021-11-22 16:24:47,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231307115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:47,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:47,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:24:47,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232705732] [2021-11-22 16:24:47,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:47,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:24:47,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:24:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:24:47,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:24:47,716 INFO L87 Difference]: Start difference. First operand 15836 states and 19001 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:50,440 INFO L93 Difference]: Finished difference Result 31134 states and 37411 transitions. [2021-11-22 16:24:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:24:50,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 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 267 [2021-11-22 16:24:50,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:50,459 INFO L225 Difference]: With dead ends: 31134 [2021-11-22 16:24:50,459 INFO L226 Difference]: Without dead ends: 15896 [2021-11-22 16:24:50,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:24:50,470 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 202 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:50,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 451 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:24:50,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15896 states. [2021-11-22 16:24:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15896 to 15884. [2021-11-22 16:24:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15884 states, 15883 states have (on average 1.1978215702323238) internal successors, (19025), 15883 states have internal predecessors, (19025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15884 states to 15884 states and 19025 transitions. [2021-11-22 16:24:52,927 INFO L78 Accepts]: Start accepts. Automaton has 15884 states and 19025 transitions. Word has length 267 [2021-11-22 16:24:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:52,927 INFO L470 AbstractCegarLoop]: Abstraction has 15884 states and 19025 transitions. [2021-11-22 16:24:52,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:24:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 15884 states and 19025 transitions. [2021-11-22 16:24:52,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-22 16:24:52,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:52,943 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:24:52,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-22 16:24:52,944 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:24:52,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:52,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1452864742, now seen corresponding path program 1 times [2021-11-22 16:24:52,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:52,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266577542] [2021-11-22 16:24:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:52,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:24:53,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:24:53,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266577542] [2021-11-22 16:24:53,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266577542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:24:53,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315987131] [2021-11-22 16:24:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:53,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:24:53,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:24:53,144 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:24:53,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-22 16:24:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:53,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-22 16:24:53,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 47 proven. 34 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-22 16:24:54,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:24:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 51 proven. 17 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-22 16:24:55,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315987131] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:24:55,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:24:55,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17, 13] total 31 [2021-11-22 16:24:55,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647249644] [2021-11-22 16:24:55,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:24:55,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-22 16:24:55,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:24:55,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-22 16:24:55,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2021-11-22 16:24:55,742 INFO L87 Difference]: Start difference. First operand 15884 states and 19025 transitions. Second operand has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:31,794 INFO L93 Difference]: Finished difference Result 144962 states and 176334 transitions. [2021-11-22 16:25:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-11-22 16:25:31,795 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 0 states have call successors, (0), 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 267 [2021-11-22 16:25:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:32,025 INFO L225 Difference]: With dead ends: 144962 [2021-11-22 16:25:32,025 INFO L226 Difference]: Without dead ends: 129952 [2021-11-22 16:25:32,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12337 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3468, Invalid=30572, Unknown=0, NotChecked=0, Total=34040 [2021-11-22 16:25:32,076 INFO L933 BasicCegarLoop]: 1682 mSDtfsCounter, 5132 mSDsluCounter, 25058 mSDsCounter, 0 mSdLazyCounter, 5727 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 26740 SdHoareTripleChecker+Invalid, 5848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 5727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:32,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5132 Valid, 26740 Invalid, 5848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [121 Valid, 5727 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-22 16:25:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129952 states. [2021-11-22 16:25:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129952 to 15932. [2021-11-22 16:25:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15932 states, 15931 states have (on average 1.1972883058188437) internal successors, (19074), 15931 states have internal predecessors, (19074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:36,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15932 states to 15932 states and 19074 transitions. [2021-11-22 16:25:36,785 INFO L78 Accepts]: Start accepts. Automaton has 15932 states and 19074 transitions. Word has length 267 [2021-11-22 16:25:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:36,786 INFO L470 AbstractCegarLoop]: Abstraction has 15932 states and 19074 transitions. [2021-11-22 16:25:36,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 15.096774193548388) internal successors, (468), 31 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 15932 states and 19074 transitions. [2021-11-22 16:25:36,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-22 16:25:36,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:36,807 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:25:36,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-22 16:25:37,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-22 16:25:37,024 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:25:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1118938066, now seen corresponding path program 1 times [2021-11-22 16:25:37,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:25:37,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626210561] [2021-11-22 16:25:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:37,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:25:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-22 16:25:37,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:25:37,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626210561] [2021-11-22 16:25:37,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626210561] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:37,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:25:37,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:25:37,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878353776] [2021-11-22 16:25:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:37,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:25:37,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:25:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:25:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:25:37,186 INFO L87 Difference]: Start difference. First operand 15932 states and 19074 transitions. Second operand has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:40,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:40,951 INFO L93 Difference]: Finished difference Result 31337 states and 37569 transitions. [2021-11-22 16:25:40,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:25:40,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 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 283 [2021-11-22 16:25:40,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:40,970 INFO L225 Difference]: With dead ends: 31337 [2021-11-22 16:25:40,970 INFO L226 Difference]: Without dead ends: 15944 [2021-11-22 16:25:40,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:25:40,978 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 326 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:40,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 557 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:25:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15944 states. [2021-11-22 16:25:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15944 to 15884. [2021-11-22 16:25:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15884 states, 15883 states have (on average 1.197129005855317) internal successors, (19014), 15883 states have internal predecessors, (19014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15884 states to 15884 states and 19014 transitions. [2021-11-22 16:25:44,532 INFO L78 Accepts]: Start accepts. Automaton has 15884 states and 19014 transitions. Word has length 283 [2021-11-22 16:25:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:44,532 INFO L470 AbstractCegarLoop]: Abstraction has 15884 states and 19014 transitions. [2021-11-22 16:25:44,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.2) internal successors, (166), 4 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 15884 states and 19014 transitions. [2021-11-22 16:25:44,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-22 16:25:44,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:44,559 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:25:44,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-22 16:25:44,560 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:25:44,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:44,561 INFO L85 PathProgramCache]: Analyzing trace with hash 645800215, now seen corresponding path program 1 times [2021-11-22 16:25:44,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:25:44,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261397087] [2021-11-22 16:25:44,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:44,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:25:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 2 proven. 38 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:25:44,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:25:44,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261397087] [2021-11-22 16:25:44,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261397087] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:25:44,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732506247] [2021-11-22 16:25:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:44,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:25:44,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:25:44,976 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:25:44,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-22 16:25:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:45,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-22 16:25:45,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:25:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-22 16:25:45,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 16:25:45,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732506247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:25:45,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 16:25:45,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 19 [2021-11-22 16:25:45,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327040975] [2021-11-22 16:25:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:25:45,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:25:45,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:25:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:25:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-11-22 16:25:45,683 INFO L87 Difference]: Start difference. First operand 15884 states and 19014 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:25:56,469 INFO L93 Difference]: Finished difference Result 53052 states and 64985 transitions. [2021-11-22 16:25:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-22 16:25:56,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-11-22 16:25:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:25:56,517 INFO L225 Difference]: With dead ends: 53052 [2021-11-22 16:25:56,517 INFO L226 Difference]: Without dead ends: 38163 [2021-11-22 16:25:56,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2021-11-22 16:25:56,529 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1028 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:25:56,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 2844 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 16:25:56,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38163 states. [2021-11-22 16:25:58,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38163 to 9241. [2021-11-22 16:25:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 9240 states have (on average 1.20508658008658) internal successors, (11135), 9240 states have internal predecessors, (11135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:58,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 11135 transitions. [2021-11-22 16:25:58,846 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 11135 transitions. Word has length 284 [2021-11-22 16:25:58,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:25:58,846 INFO L470 AbstractCegarLoop]: Abstraction has 9241 states and 11135 transitions. [2021-11-22 16:25:58,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:25:58,847 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 11135 transitions. [2021-11-22 16:25:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-22 16:25:58,855 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:25:58,856 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:25:58,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-22 16:25:59,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:25:59,057 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:25:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:25:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1264646920, now seen corresponding path program 1 times [2021-11-22 16:25:59,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:25:59,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083346835] [2021-11-22 16:25:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:59,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:25:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:25:59,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:25:59,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083346835] [2021-11-22 16:25:59,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083346835] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:25:59,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614812545] [2021-11-22 16:25:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:25:59,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:25:59,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:25:59,384 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:25:59,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-22 16:25:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:25:59,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 16:25:59,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:26:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 30 proven. 11 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:26:00,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:26:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:26:01,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614812545] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:26:01,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:26:01,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 26 [2021-11-22 16:26:01,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523457945] [2021-11-22 16:26:01,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:26:01,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-22 16:26:01,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:26:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-22 16:26:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2021-11-22 16:26:01,472 INFO L87 Difference]: Start difference. First operand 9241 states and 11135 transitions. Second operand has 27 states, 27 states have (on average 20.555555555555557) internal successors, (555), 26 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:54,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:26:54,219 INFO L93 Difference]: Finished difference Result 131513 states and 163001 transitions. [2021-11-22 16:26:54,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2021-11-22 16:26:54,220 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 20.555555555555557) internal successors, (555), 26 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-11-22 16:26:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:26:54,486 INFO L225 Difference]: With dead ends: 131513 [2021-11-22 16:26:54,487 INFO L226 Difference]: Without dead ends: 123123 [2021-11-22 16:26:54,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31264 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=13207, Invalid=66035, Unknown=0, NotChecked=0, Total=79242 [2021-11-22 16:26:54,755 INFO L933 BasicCegarLoop]: 2219 mSDtfsCounter, 4059 mSDsluCounter, 21937 mSDsCounter, 0 mSdLazyCounter, 4892 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4059 SdHoareTripleChecker+Valid, 24156 SdHoareTripleChecker+Invalid, 4962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 4892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:26:54,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4059 Valid, 24156 Invalid, 4962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 4892 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-22 16:26:54,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123123 states. [2021-11-22 16:26:58,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123123 to 11826. [2021-11-22 16:26:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11826 states, 11825 states have (on average 1.2172515856236787) internal successors, (14394), 11825 states have internal predecessors, (14394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11826 states to 11826 states and 14394 transitions. [2021-11-22 16:26:59,113 INFO L78 Accepts]: Start accepts. Automaton has 11826 states and 14394 transitions. Word has length 284 [2021-11-22 16:26:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:26:59,114 INFO L470 AbstractCegarLoop]: Abstraction has 11826 states and 14394 transitions. [2021-11-22 16:26:59,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 20.555555555555557) internal successors, (555), 26 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:26:59,114 INFO L276 IsEmpty]: Start isEmpty. Operand 11826 states and 14394 transitions. [2021-11-22 16:26:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-22 16:26:59,129 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:26:59,130 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:26:59,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-22 16:26:59,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-22 16:26:59,340 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:26:59,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:26:59,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1682535622, now seen corresponding path program 1 times [2021-11-22 16:26:59,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:26:59,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280860958] [2021-11-22 16:26:59,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:26:59,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:26:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:26:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-22 16:26:59,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:26:59,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280860958] [2021-11-22 16:26:59,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280860958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:26:59,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:26:59,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:26:59,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170165520] [2021-11-22 16:26:59,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:26:59,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:26:59,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:26:59,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:26:59,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:26:59,502 INFO L87 Difference]: Start difference. First operand 11826 states and 14394 transitions. Second operand has 5 states, 5 states have (on average 36.4) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:03,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:03,064 INFO L93 Difference]: Finished difference Result 23167 states and 28267 transitions. [2021-11-22 16:27:03,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:27:03,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-11-22 16:27:03,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:03,077 INFO L225 Difference]: With dead ends: 23167 [2021-11-22 16:27:03,077 INFO L226 Difference]: Without dead ends: 11991 [2021-11-22 16:27:03,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:03,083 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 339 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:03,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 455 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:27:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11991 states. [2021-11-22 16:27:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11991 to 11826. [2021-11-22 16:27:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11826 states, 11825 states have (on average 1.2172515856236787) internal successors, (14394), 11825 states have internal predecessors, (14394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11826 states to 11826 states and 14394 transitions. [2021-11-22 16:27:06,459 INFO L78 Accepts]: Start accepts. Automaton has 11826 states and 14394 transitions. Word has length 284 [2021-11-22 16:27:06,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:06,459 INFO L470 AbstractCegarLoop]: Abstraction has 11826 states and 14394 transitions. [2021-11-22 16:27:06,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.4) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 11826 states and 14394 transitions. [2021-11-22 16:27:06,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-22 16:27:06,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:06,470 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:06,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-22 16:27:06,470 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:27:06,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash 678902453, now seen corresponding path program 1 times [2021-11-22 16:27:06,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:06,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335505218] [2021-11-22 16:27:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:06,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:27:06,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:06,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335505218] [2021-11-22 16:27:06,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335505218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:27:06,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676494228] [2021-11-22 16:27:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:06,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:27:06,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:27:06,667 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:27:06,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-22 16:27:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:06,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 16:27:06,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:27:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:27:07,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:27:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:27:08,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676494228] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:27:08,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:27:08,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2021-11-22 16:27:08,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050814574] [2021-11-22 16:27:08,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:27:08,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 16:27:08,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:08,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 16:27:08,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-11-22 16:27:08,525 INFO L87 Difference]: Start difference. First operand 11826 states and 14394 transitions. Second operand has 17 states, 17 states have (on average 26.647058823529413) internal successors, (453), 16 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:27,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:27,324 INFO L93 Difference]: Finished difference Result 63130 states and 77377 transitions. [2021-11-22 16:27:27,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-22 16:27:27,324 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 26.647058823529413) internal successors, (453), 16 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-11-22 16:27:27,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:27,396 INFO L225 Difference]: With dead ends: 63130 [2021-11-22 16:27:27,396 INFO L226 Difference]: Without dead ends: 52299 [2021-11-22 16:27:27,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2088 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1579, Invalid=5903, Unknown=0, NotChecked=0, Total=7482 [2021-11-22 16:27:27,408 INFO L933 BasicCegarLoop]: 1544 mSDtfsCounter, 2523 mSDsluCounter, 8492 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 10036 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:27,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 10036 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1895 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-22 16:27:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52299 states. [2021-11-22 16:27:31,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52299 to 11870. [2021-11-22 16:27:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11870 states, 11869 states have (on average 1.2173729884573259) internal successors, (14449), 11869 states have internal predecessors, (14449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11870 states to 11870 states and 14449 transitions. [2021-11-22 16:27:31,559 INFO L78 Accepts]: Start accepts. Automaton has 11870 states and 14449 transitions. Word has length 284 [2021-11-22 16:27:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:31,560 INFO L470 AbstractCegarLoop]: Abstraction has 11870 states and 14449 transitions. [2021-11-22 16:27:31,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 26.647058823529413) internal successors, (453), 16 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 11870 states and 14449 transitions. [2021-11-22 16:27:31,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-22 16:27:31,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:31,576 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:31,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-22 16:27:31,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:27:31,784 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:27:31,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:31,785 INFO L85 PathProgramCache]: Analyzing trace with hash 138472947, now seen corresponding path program 1 times [2021-11-22 16:27:31,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:31,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048869969] [2021-11-22 16:27:31,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:31,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-22 16:27:31,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:31,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048869969] [2021-11-22 16:27:31,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048869969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:31,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:31,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:27:31,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710824351] [2021-11-22 16:27:31,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:31,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:27:31,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:31,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:27:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:31,940 INFO L87 Difference]: Start difference. First operand 11870 states and 14449 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:35,964 INFO L93 Difference]: Finished difference Result 23168 states and 28264 transitions. [2021-11-22 16:27:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:27:35,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-11-22 16:27:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:35,978 INFO L225 Difference]: With dead ends: 23168 [2021-11-22 16:27:35,978 INFO L226 Difference]: Without dead ends: 11881 [2021-11-22 16:27:35,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:35,984 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 197 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:35,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 557 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:27:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11881 states. [2021-11-22 16:27:39,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11881 to 11826. [2021-11-22 16:27:39,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11826 states, 11825 states have (on average 1.2172515856236787) internal successors, (14394), 11825 states have internal predecessors, (14394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11826 states to 11826 states and 14394 transitions. [2021-11-22 16:27:39,981 INFO L78 Accepts]: Start accepts. Automaton has 11826 states and 14394 transitions. Word has length 284 [2021-11-22 16:27:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:39,982 INFO L470 AbstractCegarLoop]: Abstraction has 11826 states and 14394 transitions. [2021-11-22 16:27:39,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 11826 states and 14394 transitions. [2021-11-22 16:27:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-22 16:27:39,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:39,993 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:39,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-22 16:27:39,993 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:27:39,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:39,993 INFO L85 PathProgramCache]: Analyzing trace with hash -644276493, now seen corresponding path program 1 times [2021-11-22 16:27:39,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:39,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734810636] [2021-11-22 16:27:39,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:39,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-22 16:27:40,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:40,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734810636] [2021-11-22 16:27:40,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734810636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:40,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:40,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:27:40,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129837948] [2021-11-22 16:27:40,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:40,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:27:40,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:40,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:27:40,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:27:40,140 INFO L87 Difference]: Start difference. First operand 11826 states and 14394 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:42,453 INFO L93 Difference]: Finished difference Result 16852 states and 20501 transitions. [2021-11-22 16:27:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:27:42,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-11-22 16:27:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:42,459 INFO L225 Difference]: With dead ends: 16852 [2021-11-22 16:27:42,459 INFO L226 Difference]: Without dead ends: 5587 [2021-11-22 16:27:42,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:42,466 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:42,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:27:42,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2021-11-22 16:27:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 5587. [2021-11-22 16:27:44,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5587 states, 5586 states have (on average 1.2030075187969924) internal successors, (6720), 5586 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 6720 transitions. [2021-11-22 16:27:44,641 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 6720 transitions. Word has length 284 [2021-11-22 16:27:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:44,641 INFO L470 AbstractCegarLoop]: Abstraction has 5587 states and 6720 transitions. [2021-11-22 16:27:44,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:44,642 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 6720 transitions. [2021-11-22 16:27:44,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-22 16:27:44,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:44,647 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:44,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-22 16:27:44,648 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:27:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:44,648 INFO L85 PathProgramCache]: Analyzing trace with hash -511283684, now seen corresponding path program 1 times [2021-11-22 16:27:44,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:44,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571360008] [2021-11-22 16:27:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:44,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-22 16:27:44,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:44,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571360008] [2021-11-22 16:27:44,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571360008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:44,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:44,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:27:44,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575625049] [2021-11-22 16:27:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:44,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:27:44,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:27:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:44,803 INFO L87 Difference]: Start difference. First operand 5587 states and 6720 transitions. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:47,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:47,176 INFO L93 Difference]: Finished difference Result 10728 states and 12948 transitions. [2021-11-22 16:27:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:27:47,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 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 285 [2021-11-22 16:27:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:47,183 INFO L225 Difference]: With dead ends: 10728 [2021-11-22 16:27:47,183 INFO L226 Difference]: Without dead ends: 5603 [2021-11-22 16:27:47,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:47,187 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 332 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:47,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 535 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:27:47,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5603 states. [2021-11-22 16:27:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5603 to 5523. [2021-11-22 16:27:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5523 states, 5522 states have (on average 1.2024628757696487) internal successors, (6640), 5522 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5523 states to 5523 states and 6640 transitions. [2021-11-22 16:27:49,338 INFO L78 Accepts]: Start accepts. Automaton has 5523 states and 6640 transitions. Word has length 285 [2021-11-22 16:27:49,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:49,338 INFO L470 AbstractCegarLoop]: Abstraction has 5523 states and 6640 transitions. [2021-11-22 16:27:49,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:49,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5523 states and 6640 transitions. [2021-11-22 16:27:49,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-22 16:27:49,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:49,344 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:49,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-22 16:27:49,344 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:27:49,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash -518562020, now seen corresponding path program 1 times [2021-11-22 16:27:49,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929886100] [2021-11-22 16:27:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:49,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-22 16:27:49,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929886100] [2021-11-22 16:27:49,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929886100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:49,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:49,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:27:49,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981895119] [2021-11-22 16:27:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:49,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:27:49,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:27:49,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:27:49,472 INFO L87 Difference]: Start difference. First operand 5523 states and 6640 transitions. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:51,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:51,214 INFO L93 Difference]: Finished difference Result 9093 states and 10923 transitions. [2021-11-22 16:27:51,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:27:51,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 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 285 [2021-11-22 16:27:51,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:51,219 INFO L225 Difference]: With dead ends: 9093 [2021-11-22 16:27:51,220 INFO L226 Difference]: Without dead ends: 3992 [2021-11-22 16:27:51,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:27:51,223 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 1 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:51,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 731 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:27:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2021-11-22 16:27:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3992. [2021-11-22 16:27:52,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3991 states have (on average 1.185918316211476) internal successors, (4733), 3991 states have internal predecessors, (4733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:52,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 4733 transitions. [2021-11-22 16:27:52,799 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 4733 transitions. Word has length 285 [2021-11-22 16:27:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:52,800 INFO L470 AbstractCegarLoop]: Abstraction has 3992 states and 4733 transitions. [2021-11-22 16:27:52,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:52,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 4733 transitions. [2021-11-22 16:27:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-22 16:27:52,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:52,804 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:52,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-22 16:27:52,805 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:27:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:52,805 INFO L85 PathProgramCache]: Analyzing trace with hash -557386777, now seen corresponding path program 1 times [2021-11-22 16:27:52,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:52,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897028755] [2021-11-22 16:27:52,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:52,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:52,921 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-11-22 16:27:52,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:52,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897028755] [2021-11-22 16:27:52,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897028755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:52,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:52,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 16:27:52,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727782946] [2021-11-22 16:27:52,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:52,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:27:52,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:52,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:27:52,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 16:27:52,925 INFO L87 Difference]: Start difference. First operand 3992 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:27:56,469 INFO L93 Difference]: Finished difference Result 9500 states and 11442 transitions. [2021-11-22 16:27:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:27:56,470 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 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 286 [2021-11-22 16:27:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:27:56,475 INFO L225 Difference]: With dead ends: 9500 [2021-11-22 16:27:56,476 INFO L226 Difference]: Without dead ends: 6100 [2021-11-22 16:27:56,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-22 16:27:56,479 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 604 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:27:56,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 1913 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:27:56,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6100 states. [2021-11-22 16:27:57,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6100 to 3968. [2021-11-22 16:27:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 1.1840181497353164) internal successors, (4697), 3967 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 4697 transitions. [2021-11-22 16:27:57,989 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 4697 transitions. Word has length 286 [2021-11-22 16:27:57,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:27:57,989 INFO L470 AbstractCegarLoop]: Abstraction has 3968 states and 4697 transitions. [2021-11-22 16:27:57,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:27:57,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 4697 transitions. [2021-11-22 16:27:57,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-22 16:27:57,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:27:57,995 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:27:57,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-22 16:27:57,995 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:27:57,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:27:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1202117298, now seen corresponding path program 1 times [2021-11-22 16:27:57,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:27:57,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764633521] [2021-11-22 16:27:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:27:57,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:27:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:27:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-22 16:27:58,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:27:58,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764633521] [2021-11-22 16:27:58,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764633521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:27:58,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:27:58,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 16:27:58,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914840340] [2021-11-22 16:27:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:27:58,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:27:58,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:27:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:27:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:27:58,127 INFO L87 Difference]: Start difference. First operand 3968 states and 4697 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:28:04,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:28:04,728 INFO L93 Difference]: Finished difference Result 12927 states and 15604 transitions. [2021-11-22 16:28:04,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 16:28:04,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 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 290 [2021-11-22 16:28:04,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:28:04,738 INFO L225 Difference]: With dead ends: 12927 [2021-11-22 16:28:04,738 INFO L226 Difference]: Without dead ends: 9551 [2021-11-22 16:28:04,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2021-11-22 16:28:04,742 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 1485 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:28:04,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 2427 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:28:04,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9551 states. [2021-11-22 16:28:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9551 to 3932. [2021-11-22 16:28:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 3931 states have (on average 1.1826507250063598) internal successors, (4649), 3931 states have internal predecessors, (4649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:28:06,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 4649 transitions. [2021-11-22 16:28:06,320 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 4649 transitions. Word has length 290 [2021-11-22 16:28:06,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:28:06,320 INFO L470 AbstractCegarLoop]: Abstraction has 3932 states and 4649 transitions. [2021-11-22 16:28:06,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:28:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 4649 transitions. [2021-11-22 16:28:06,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-22 16:28:06,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:28:06,325 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:28:06,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-22 16:28:06,325 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:28:06,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:28:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -879261186, now seen corresponding path program 1 times [2021-11-22 16:28:06,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:28:06,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649858099] [2021-11-22 16:28:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:28:06,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:28:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:28:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:28:06,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:28:06,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649858099] [2021-11-22 16:28:06,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649858099] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:28:06,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369231259] [2021-11-22 16:28:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:28:06,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:28:06,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:28:06,585 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:28:06,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-22 16:28:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:28:06,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-22 16:28:06,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:28:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 19 proven. 35 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-22 16:28:08,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:28:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 6 proven. 48 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-22 16:28:10,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369231259] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:28:10,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:28:10,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 20] total 34 [2021-11-22 16:28:10,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96623666] [2021-11-22 16:28:10,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:28:10,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-22 16:28:10,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:28:10,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-22 16:28:10,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1018, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 16:28:10,151 INFO L87 Difference]: Start difference. First operand 3932 states and 4649 transitions. Second operand has 35 states, 35 states have (on average 12.685714285714285) internal successors, (444), 34 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:29:37,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:29:37,581 INFO L93 Difference]: Finished difference Result 107926 states and 128951 transitions. [2021-11-22 16:29:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 465 states. [2021-11-22 16:29:37,581 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 12.685714285714285) internal successors, (444), 34 states have internal predecessors, (444), 0 states have call successors, (0), 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 291 [2021-11-22 16:29:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:29:37,955 INFO L225 Difference]: With dead ends: 107926 [2021-11-22 16:29:37,955 INFO L226 Difference]: Without dead ends: 104586 [2021-11-22 16:29:37,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 495 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108810 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=27749, Invalid=218763, Unknown=0, NotChecked=0, Total=246512 [2021-11-22 16:29:37,993 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 5651 mSDsluCounter, 15913 mSDsCounter, 0 mSdLazyCounter, 5481 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5651 SdHoareTripleChecker+Valid, 16835 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 5481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:29:37,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5651 Valid, 16835 Invalid, 5627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [146 Valid, 5481 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-22 16:29:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104586 states. [2021-11-22 16:29:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104586 to 4876. [2021-11-22 16:29:40,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4875 states have (on average 1.1786666666666668) internal successors, (5746), 4875 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:29:40,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 5746 transitions. [2021-11-22 16:29:40,920 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 5746 transitions. Word has length 291 [2021-11-22 16:29:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:29:40,920 INFO L470 AbstractCegarLoop]: Abstraction has 4876 states and 5746 transitions. [2021-11-22 16:29:40,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 12.685714285714285) internal successors, (444), 34 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:29:40,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 5746 transitions. [2021-11-22 16:29:40,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-22 16:29:40,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:29:40,925 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:29:40,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-22 16:29:41,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:29:41,127 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:29:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:29:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash -461372484, now seen corresponding path program 1 times [2021-11-22 16:29:41,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:29:41,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803003079] [2021-11-22 16:29:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:29:41,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:29:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:29:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-22 16:29:41,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:29:41,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803003079] [2021-11-22 16:29:41,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803003079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:29:41,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:29:41,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:29:41,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666799191] [2021-11-22 16:29:41,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:29:41,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:29:41,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:29:41,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:29:41,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:29:41,242 INFO L87 Difference]: Start difference. First operand 4876 states and 5746 transitions. Second operand has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:29:43,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:29:43,408 INFO L93 Difference]: Finished difference Result 9574 states and 11308 transitions. [2021-11-22 16:29:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 16:29:43,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 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 291 [2021-11-22 16:29:43,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:29:43,414 INFO L225 Difference]: With dead ends: 9574 [2021-11-22 16:29:43,414 INFO L226 Difference]: Without dead ends: 5021 [2021-11-22 16:29:43,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:29:43,418 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 195 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:29:43,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 506 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:29:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2021-11-22 16:29:45,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 4992. [2021-11-22 16:29:45,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4992 states, 4991 states have (on average 1.1725105189340814) internal successors, (5852), 4991 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:29:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 5852 transitions. [2021-11-22 16:29:45,637 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 5852 transitions. Word has length 291 [2021-11-22 16:29:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:29:45,637 INFO L470 AbstractCegarLoop]: Abstraction has 4992 states and 5852 transitions. [2021-11-22 16:29:45,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.4) internal successors, (197), 4 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:29:45,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 5852 transitions. [2021-11-22 16:29:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-22 16:29:45,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:29:45,645 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:29:45,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-22 16:29:45,645 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:29:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:29:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash -451896942, now seen corresponding path program 1 times [2021-11-22 16:29:45,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:29:45,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915154909] [2021-11-22 16:29:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:29:45,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:29:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:29:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-22 16:29:45,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:29:45,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915154909] [2021-11-22 16:29:45,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915154909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:29:45,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:29:45,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 16:29:45,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336082855] [2021-11-22 16:29:45,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:29:45,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:29:45,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:29:45,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:29:45,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:29:45,784 INFO L87 Difference]: Start difference. First operand 4992 states and 5852 transitions. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:29:55,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:29:55,414 INFO L93 Difference]: Finished difference Result 17806 states and 21057 transitions. [2021-11-22 16:29:55,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 16:29:55,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 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 292 [2021-11-22 16:29:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:29:55,429 INFO L225 Difference]: With dead ends: 17806 [2021-11-22 16:29:55,429 INFO L226 Difference]: Without dead ends: 13390 [2021-11-22 16:29:55,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2021-11-22 16:29:55,433 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 1566 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:29:55,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1566 Valid, 2905 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 16:29:55,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13390 states. [2021-11-22 16:29:57,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13390 to 4943. [2021-11-22 16:29:57,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4943 states, 4942 states have (on average 1.1699716713881019) internal successors, (5782), 4942 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:29:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 5782 transitions. [2021-11-22 16:29:57,607 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 5782 transitions. Word has length 292 [2021-11-22 16:29:57,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:29:57,608 INFO L470 AbstractCegarLoop]: Abstraction has 4943 states and 5782 transitions. [2021-11-22 16:29:57,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:29:57,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 5782 transitions. [2021-11-22 16:29:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-22 16:29:57,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:29:57,613 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:29:57,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-22 16:29:57,613 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:29:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:29:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1896109591, now seen corresponding path program 1 times [2021-11-22 16:29:57,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:29:57,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821153431] [2021-11-22 16:29:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:29:57,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:29:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:29:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:29:58,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:29:58,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821153431] [2021-11-22 16:29:58,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821153431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:29:58,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52426810] [2021-11-22 16:29:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:29:58,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:29:58,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:29:58,028 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:29:58,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-22 16:29:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:29:58,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-22 16:29:58,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:29:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-22 16:29:59,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:29:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-22 16:29:59,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52426810] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 16:29:59,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-22 16:29:59,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12, 9] total 25 [2021-11-22 16:29:59,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540899284] [2021-11-22 16:29:59,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:29:59,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 16:29:59,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:29:59,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 16:29:59,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2021-11-22 16:29:59,528 INFO L87 Difference]: Start difference. First operand 4943 states and 5782 transitions. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:30:05,419 INFO L93 Difference]: Finished difference Result 14964 states and 17821 transitions. [2021-11-22 16:30:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 16:30:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 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 293 [2021-11-22 16:30:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:30:05,431 INFO L225 Difference]: With dead ends: 14964 [2021-11-22 16:30:05,431 INFO L226 Difference]: Without dead ends: 10340 [2021-11-22 16:30:05,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=996, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 16:30:05,435 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 393 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:30:05,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 2434 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:30:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10340 states. [2021-11-22 16:30:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10340 to 4564. [2021-11-22 16:30:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4563 states have (on average 1.170940170940171) internal successors, (5343), 4563 states have internal predecessors, (5343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 5343 transitions. [2021-11-22 16:30:07,669 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 5343 transitions. Word has length 293 [2021-11-22 16:30:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:30:07,670 INFO L470 AbstractCegarLoop]: Abstraction has 4564 states and 5343 transitions. [2021-11-22 16:30:07,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:07,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 5343 transitions. [2021-11-22 16:30:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-22 16:30:07,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:30:07,676 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:30:07,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-22 16:30:07,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-11-22 16:30:07,877 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:30:07,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:30:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1175020329, now seen corresponding path program 1 times [2021-11-22 16:30:07,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:30:07,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035185818] [2021-11-22 16:30:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:30:07,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:30:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:30:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-22 16:30:07,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:30:07,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035185818] [2021-11-22 16:30:07,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035185818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:30:07,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:30:07,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:30:07,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318087266] [2021-11-22 16:30:07,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:30:07,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:30:07,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:30:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:30:07,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:30:07,993 INFO L87 Difference]: Start difference. First operand 4564 states and 5343 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:11,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:30:11,635 INFO L93 Difference]: Finished difference Result 10007 states and 11774 transitions. [2021-11-22 16:30:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:30:11,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 293 [2021-11-22 16:30:11,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:30:11,645 INFO L225 Difference]: With dead ends: 10007 [2021-11-22 16:30:11,645 INFO L226 Difference]: Without dead ends: 6035 [2021-11-22 16:30:11,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:30:11,649 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 110 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:30:11,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 583 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:30:11,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2021-11-22 16:30:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 4564. [2021-11-22 16:30:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4563 states have (on average 1.1630506245890861) internal successors, (5307), 4563 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:13,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 5307 transitions. [2021-11-22 16:30:13,869 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 5307 transitions. Word has length 293 [2021-11-22 16:30:13,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:30:13,870 INFO L470 AbstractCegarLoop]: Abstraction has 4564 states and 5307 transitions. [2021-11-22 16:30:13,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 5307 transitions. [2021-11-22 16:30:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-22 16:30:13,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:30:13,875 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:30:13,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-22 16:30:13,875 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:30:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:30:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1233195549, now seen corresponding path program 1 times [2021-11-22 16:30:13,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:30:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306041783] [2021-11-22 16:30:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:30:13,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:30:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:30:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-22 16:30:13,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:30:13,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306041783] [2021-11-22 16:30:13,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306041783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:30:13,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:30:13,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 16:30:13,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695043136] [2021-11-22 16:30:13,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:30:13,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:30:13,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:30:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:30:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:30:13,989 INFO L87 Difference]: Start difference. First operand 4564 states and 5307 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:19,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:30:19,362 INFO L93 Difference]: Finished difference Result 11562 states and 13584 transitions. [2021-11-22 16:30:19,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 16:30:19,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 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 294 [2021-11-22 16:30:19,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:30:19,371 INFO L225 Difference]: With dead ends: 11562 [2021-11-22 16:30:19,371 INFO L226 Difference]: Without dead ends: 7590 [2021-11-22 16:30:19,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-22 16:30:19,375 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 861 mSDsluCounter, 1847 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:30:19,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 2265 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:30:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7590 states. [2021-11-22 16:30:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7590 to 4504. [2021-11-22 16:30:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4504 states, 4503 states have (on average 1.1585609593604265) internal successors, (5217), 4503 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 5217 transitions. [2021-11-22 16:30:21,713 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 5217 transitions. Word has length 294 [2021-11-22 16:30:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:30:21,713 INFO L470 AbstractCegarLoop]: Abstraction has 4504 states and 5217 transitions. [2021-11-22 16:30:21,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 5217 transitions. [2021-11-22 16:30:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-22 16:30:21,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:30:21,719 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:30:21,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-22 16:30:21,719 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:30:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:30:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1820001563, now seen corresponding path program 1 times [2021-11-22 16:30:21,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:30:21,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100675669] [2021-11-22 16:30:21,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:30:21,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:30:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:30:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-22 16:30:21,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:30:21,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100675669] [2021-11-22 16:30:21,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100675669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:30:21,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:30:21,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 16:30:21,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397193374] [2021-11-22 16:30:21,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:30:21,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:30:21,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:30:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:30:21,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:30:21,847 INFO L87 Difference]: Start difference. First operand 4504 states and 5217 transitions. Second operand has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:29,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:30:29,572 INFO L93 Difference]: Finished difference Result 13615 states and 15959 transitions. [2021-11-22 16:30:29,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 16:30:29,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 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 294 [2021-11-22 16:30:29,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:30:29,584 INFO L225 Difference]: With dead ends: 13615 [2021-11-22 16:30:29,584 INFO L226 Difference]: Without dead ends: 9703 [2021-11-22 16:30:29,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-22 16:30:29,588 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 965 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 2837 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:30:29,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 2837 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 16:30:29,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9703 states. [2021-11-22 16:30:31,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9703 to 4462. [2021-11-22 16:30:31,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4461 states have (on average 1.1560188298587761) internal successors, (5157), 4461 states have internal predecessors, (5157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 5157 transitions. [2021-11-22 16:30:31,792 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 5157 transitions. Word has length 294 [2021-11-22 16:30:31,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:30:31,793 INFO L470 AbstractCegarLoop]: Abstraction has 4462 states and 5157 transitions. [2021-11-22 16:30:31,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.25) internal successors, (194), 8 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:31,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 5157 transitions. [2021-11-22 16:30:31,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-22 16:30:31,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:30:31,798 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:30:31,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-22 16:30:31,799 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:30:31,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:30:31,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1672500828, now seen corresponding path program 1 times [2021-11-22 16:30:31,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:30:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434428287] [2021-11-22 16:30:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:30:31,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:30:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:30:31,878 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-22 16:30:31,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:30:31,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434428287] [2021-11-22 16:30:31,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434428287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:30:31,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:30:31,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:30:31,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983452058] [2021-11-22 16:30:31,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:30:31,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:30:31,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:30:31,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:30:31,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:30:31,881 INFO L87 Difference]: Start difference. First operand 4462 states and 5157 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:35,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:30:35,280 INFO L93 Difference]: Finished difference Result 9797 states and 11396 transitions. [2021-11-22 16:30:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:30:35,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 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 294 [2021-11-22 16:30:35,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:30:35,293 INFO L225 Difference]: With dead ends: 9797 [2021-11-22 16:30:35,293 INFO L226 Difference]: Without dead ends: 5927 [2021-11-22 16:30:35,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:30:35,298 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 100 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:30:35,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 591 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:30:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5927 states. [2021-11-22 16:30:37,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5927 to 4462. [2021-11-22 16:30:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4461 states have (on average 1.1546738399462004) internal successors, (5151), 4461 states have internal predecessors, (5151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 5151 transitions. [2021-11-22 16:30:37,471 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 5151 transitions. Word has length 294 [2021-11-22 16:30:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:30:37,471 INFO L470 AbstractCegarLoop]: Abstraction has 4462 states and 5151 transitions. [2021-11-22 16:30:37,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 5151 transitions. [2021-11-22 16:30:37,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-22 16:30:37,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:30:37,477 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:30:37,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-22 16:30:37,477 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:30:37,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:30:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1665619107, now seen corresponding path program 1 times [2021-11-22 16:30:37,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:30:37,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502549906] [2021-11-22 16:30:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:30:37,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:30:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:30:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2021-11-22 16:30:37,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:30:37,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502549906] [2021-11-22 16:30:37,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502549906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:30:37,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:30:37,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:30:37,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462411754] [2021-11-22 16:30:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:30:37,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:30:37,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:30:37,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:30:37,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:30:37,592 INFO L87 Difference]: Start difference. First operand 4462 states and 5151 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:40,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:30:40,978 INFO L93 Difference]: Finished difference Result 9774 states and 11484 transitions. [2021-11-22 16:30:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:30:40,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 294 [2021-11-22 16:30:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:30:40,985 INFO L225 Difference]: With dead ends: 9774 [2021-11-22 16:30:40,985 INFO L226 Difference]: Without dead ends: 5904 [2021-11-22 16:30:40,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:30:40,989 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 110 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:30:40,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 929 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:30:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2021-11-22 16:30:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 4438. [2021-11-22 16:30:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4438 states, 4437 states have (on average 1.1514536849222448) internal successors, (5109), 4437 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:43,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4438 states to 4438 states and 5109 transitions. [2021-11-22 16:30:43,132 INFO L78 Accepts]: Start accepts. Automaton has 4438 states and 5109 transitions. Word has length 294 [2021-11-22 16:30:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:30:43,132 INFO L470 AbstractCegarLoop]: Abstraction has 4438 states and 5109 transitions. [2021-11-22 16:30:43,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 4438 states and 5109 transitions. [2021-11-22 16:30:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-22 16:30:43,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:30:43,137 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:30:43,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-22 16:30:43,137 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:30:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:30:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1727105188, now seen corresponding path program 1 times [2021-11-22 16:30:43,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:30:43,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615469926] [2021-11-22 16:30:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:30:43,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:30:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:30:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:30:43,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:30:43,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615469926] [2021-11-22 16:30:43,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615469926] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:30:43,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183703215] [2021-11-22 16:30:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:30:43,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:30:43,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:30:43,331 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:30:43,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-22 16:30:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:30:43,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-22 16:30:43,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:30:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:30:44,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:30:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-22 16:30:44,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183703215] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:30:44,901 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:30:44,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2021-11-22 16:30:44,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127554941] [2021-11-22 16:30:44,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:30:44,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 16:30:44,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:30:44,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 16:30:44,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-22 16:30:44,904 INFO L87 Difference]: Start difference. First operand 4438 states and 5109 transitions. Second operand has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:53,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:30:53,095 INFO L93 Difference]: Finished difference Result 15992 states and 18732 transitions. [2021-11-22 16:30:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-22 16:30:53,095 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 0 states have call successors, (0), 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 294 [2021-11-22 16:30:53,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:30:53,113 INFO L225 Difference]: With dead ends: 15992 [2021-11-22 16:30:53,113 INFO L226 Difference]: Without dead ends: 12146 [2021-11-22 16:30:53,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 590 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=535, Invalid=1915, Unknown=0, NotChecked=0, Total=2450 [2021-11-22 16:30:53,118 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 2270 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 3552 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:30:53,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2270 Valid, 3552 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:30:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12146 states. [2021-11-22 16:30:55,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12146 to 4480. [2021-11-22 16:30:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4479 states have (on average 1.1500334896182183) internal successors, (5151), 4479 states have internal predecessors, (5151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 5151 transitions. [2021-11-22 16:30:55,424 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 5151 transitions. Word has length 294 [2021-11-22 16:30:55,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:30:55,425 INFO L470 AbstractCegarLoop]: Abstraction has 4480 states and 5151 transitions. [2021-11-22 16:30:55,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.5) internal successors, (225), 10 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:30:55,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 5151 transitions. [2021-11-22 16:30:55,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-11-22 16:30:55,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:30:55,431 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:30:55,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-22 16:30:55,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-22 16:30:55,632 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:30:55,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:30:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash 273396635, now seen corresponding path program 1 times [2021-11-22 16:30:55,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:30:55,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788649934] [2021-11-22 16:30:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:30:55,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:30:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:30:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-22 16:30:55,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:30:55,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788649934] [2021-11-22 16:30:55,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788649934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:30:55,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:30:55,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 16:30:55,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453613571] [2021-11-22 16:30:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:30:55,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 16:30:55,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:30:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 16:30:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 16:30:55,756 INFO L87 Difference]: Start difference. First operand 4480 states and 5151 transitions. Second operand has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:31:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:31:04,145 INFO L93 Difference]: Finished difference Result 14511 states and 16955 transitions. [2021-11-22 16:31:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 16:31:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 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 298 [2021-11-22 16:31:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:31:04,158 INFO L225 Difference]: With dead ends: 14511 [2021-11-22 16:31:04,158 INFO L226 Difference]: Without dead ends: 10623 [2021-11-22 16:31:04,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2021-11-22 16:31:04,162 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 1143 mSDsluCounter, 2309 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:31:04,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 2914 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:31:04,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10623 states. [2021-11-22 16:31:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10623 to 4396. [2021-11-22 16:31:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 1.1501706484641638) internal successors, (5055), 4395 states have internal predecessors, (5055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:31:06,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 5055 transitions. [2021-11-22 16:31:06,447 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 5055 transitions. Word has length 298 [2021-11-22 16:31:06,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:31:06,447 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 5055 transitions. [2021-11-22 16:31:06,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:31:06,447 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 5055 transitions. [2021-11-22 16:31:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-11-22 16:31:06,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:31:06,454 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:31:06,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-22 16:31:06,454 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-22 16:31:06,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:31:06,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2009546376, now seen corresponding path program 1 times [2021-11-22 16:31:06,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:31:06,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979396970] [2021-11-22 16:31:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:31:06,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:31:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:31:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 97 proven. 39 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-22 16:31:06,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:31:06,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979396970] [2021-11-22 16:31:06,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979396970] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 16:31:06,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856016510] [2021-11-22 16:31:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:31:06,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 16:31:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:31:06,715 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 16:31:06,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d604290-3cc2-4020-a4d5-d2ac6e22d635/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-22 16:31:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:31:07,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 16:31:07,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:31:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 97 proven. 39 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-22 16:31:08,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:31:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 97 proven. 39 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-22 16:31:09,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856016510] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 16:31:09,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 16:31:09,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2021-11-22 16:31:09,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395839359] [2021-11-22 16:31:09,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 16:31:09,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 16:31:09,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:31:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 16:31:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-11-22 16:31:09,009 INFO L87 Difference]: Start difference. First operand 4396 states and 5055 transitions. Second operand has 15 states, 15 states have (on average 22.133333333333333) internal successors, (332), 14 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)