./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G --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 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:46:13,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:46:13,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:46:13,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:46:13,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:46:13,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:46:13,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:46:13,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:46:13,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:46:13,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:46:13,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:46:13,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:46:13,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:46:13,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:46:13,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:46:13,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:46:13,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:46:13,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:46:13,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:46:13,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:46:13,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:46:13,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:46:13,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:46:13,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:46:13,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:46:13,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:46:13,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:46:13,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:46:13,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:46:13,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:46:13,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:46:13,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:46:13,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:46:13,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:46:13,431 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:46:13,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:46:13,433 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:46:13,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:46:13,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:46:13,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:46:13,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:46:13,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:46:13,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:46:13,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:46:13,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:46:13,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:46:13,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:46:13,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:46:13,524 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:46:13,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:46:13,525 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:46:13,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:46:13,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:46:13,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:46:13,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:46:13,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:46:13,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:46:13,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:46:13,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:46:13,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:46:13,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:46:13,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:46:13,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:46:13,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:46:13,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:46:13,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:46:13,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:46:13,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:46:13,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:46:13,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:46:13,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:46:13,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:46:13,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:46:13,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:46:13,543 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_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2021-11-23 13:46:13,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:46:13,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:46:13,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:46:13,915 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:46:13,916 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:46:13,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2021-11-23 13:46:13,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/data/22cb6debd/076fcdcba1164ecf97ee32f1ed7f8dd9/FLAG36cc30a9b [2021-11-23 13:46:14,864 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:46:14,865 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2021-11-23 13:46:14,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/data/22cb6debd/076fcdcba1164ecf97ee32f1ed7f8dd9/FLAG36cc30a9b [2021-11-23 13:46:15,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/data/22cb6debd/076fcdcba1164ecf97ee32f1ed7f8dd9 [2021-11-23 13:46:15,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:46:15,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:46:15,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:46:15,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:46:15,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:46:15,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:15,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76891f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15, skipping insertion in model container [2021-11-23 13:46:15,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:15,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:46:15,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:46:15,768 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_56a1340a-32ec-4176-83fb-217a197e7cc9/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2021-11-23 13:46:15,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:46:15,796 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:46:15,904 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_56a1340a-32ec-4176-83fb-217a197e7cc9/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i[36399,36412] [2021-11-23 13:46:15,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:46:15,967 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:46:15,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15 WrapperNode [2021-11-23 13:46:15,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:46:15,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:46:15,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:46:15,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:46:15,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,081 INFO L137 Inliner]: procedures = 184, calls = 149, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 334 [2021-11-23 13:46:16,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:46:16,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:46:16,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:46:16,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:46:16,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,166 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:46:16,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:46:16,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:46:16,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:46:16,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (1/1) ... [2021-11-23 13:46:16,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:46:16,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:16,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:46:16,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:46:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:46:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2021-11-23 13:46:16,278 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2021-11-23 13:46:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:46:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:46:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2021-11-23 13:46:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2021-11-23 13:46:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:46:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:46:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:46:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2021-11-23 13:46:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2021-11-23 13:46:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2021-11-23 13:46:16,280 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2021-11-23 13:46:16,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:46:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2021-11-23 13:46:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2021-11-23 13:46:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:46:16,281 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2021-11-23 13:46:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2021-11-23 13:46:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:46:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2021-11-23 13:46:16,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2021-11-23 13:46:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 13:46:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:46:16,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:46:16,442 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:46:16,445 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:46:17,347 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:46:17,356 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:46:17,356 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:46:17,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:17 BoogieIcfgContainer [2021-11-23 13:46:17,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:46:17,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:46:17,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:46:17,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:46:17,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:46:15" (1/3) ... [2021-11-23 13:46:17,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aed3d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:17, skipping insertion in model container [2021-11-23 13:46:17,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:15" (2/3) ... [2021-11-23 13:46:17,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aed3d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:17, skipping insertion in model container [2021-11-23 13:46:17,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:17" (3/3) ... [2021-11-23 13:46:17,369 INFO L111 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2021-11-23 13:46:17,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:46:17,375 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:46:17,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:46:17,443 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 [2021-11-23 13:46:17,443 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:46:17,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 100 states have (on average 1.41) internal successors, (141), 101 states have internal predecessors, (141), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 13:46:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 13:46:17,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:17,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:17,478 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1611643944, now seen corresponding path program 1 times [2021-11-23 13:46:17,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:17,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782762968] [2021-11-23 13:46:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:17,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:18,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:18,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782762968] [2021-11-23 13:46:18,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782762968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:18,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:18,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:46:18,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447629732] [2021-11-23 13:46:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:18,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:18,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:18,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:46:18,078 INFO L87 Difference]: Start difference. First operand has 127 states, 100 states have (on average 1.41) internal successors, (141), 101 states have internal predecessors, (141), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:19,146 INFO L93 Difference]: Finished difference Result 275 states and 405 transitions. [2021-11-23 13:46:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:46:19,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 13:46:19,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:19,181 INFO L225 Difference]: With dead ends: 275 [2021-11-23 13:46:19,181 INFO L226 Difference]: Without dead ends: 128 [2021-11-23 13:46:19,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:46:19,194 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 42 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:19,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 968 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:46:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-23 13:46:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2021-11-23 13:46:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 99 states have (on average 1.404040404040404) internal successors, (139), 102 states have internal predecessors, (139), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 13:46:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 175 transitions. [2021-11-23 13:46:19,303 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 175 transitions. Word has length 15 [2021-11-23 13:46:19,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:19,303 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 175 transitions. [2021-11-23 13:46:19,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 175 transitions. [2021-11-23 13:46:19,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 13:46:19,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:19,321 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:46:19,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:46:19,322 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:19,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:19,323 INFO L85 PathProgramCache]: Analyzing trace with hash 973883536, now seen corresponding path program 1 times [2021-11-23 13:46:19,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:19,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909368051] [2021-11-23 13:46:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:19,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:19,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:19,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909368051] [2021-11-23 13:46:19,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909368051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:19,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:19,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:46:19,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730471512] [2021-11-23 13:46:19,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:19,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:46:19,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:19,574 INFO L87 Difference]: Start difference. First operand 127 states and 175 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:19,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:19,607 INFO L93 Difference]: Finished difference Result 242 states and 352 transitions. [2021-11-23 13:46:19,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:19,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 13:46:19,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:19,613 INFO L225 Difference]: With dead ends: 242 [2021-11-23 13:46:19,613 INFO L226 Difference]: Without dead ends: 129 [2021-11-23 13:46:19,617 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 [2021-11-23 13:46:19,627 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 6 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:19,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 319 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:46:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-23 13:46:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2021-11-23 13:46:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 99 states have (on average 1.393939393939394) internal successors, (138), 102 states have internal predecessors, (138), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-23 13:46:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2021-11-23 13:46:19,685 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 27 [2021-11-23 13:46:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:19,685 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2021-11-23 13:46:19,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2021-11-23 13:46:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:46:19,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:19,690 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:46:19,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:46:19,690 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:19,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:19,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1537297550, now seen corresponding path program 1 times [2021-11-23 13:46:19,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:19,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327215647] [2021-11-23 13:46:19,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:19,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:19,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:19,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327215647] [2021-11-23 13:46:19,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327215647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:19,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:19,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:46:19,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998911084] [2021-11-23 13:46:19,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:19,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:19,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:19,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:19,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:46:19,981 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:20,941 INFO L93 Difference]: Finished difference Result 282 states and 415 transitions. [2021-11-23 13:46:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:46:20,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 13:46:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:20,958 INFO L225 Difference]: With dead ends: 282 [2021-11-23 13:46:20,958 INFO L226 Difference]: Without dead ends: 169 [2021-11-23 13:46:20,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:46:20,962 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 58 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:20,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 1010 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:46:20,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-23 13:46:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 157. [2021-11-23 13:46:21,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 123 states have (on average 1.3983739837398375) internal successors, (172), 128 states have internal predecessors, (172), 23 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (21), 18 states have call predecessors, (21), 19 states have call successors, (21) [2021-11-23 13:46:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 216 transitions. [2021-11-23 13:46:21,010 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 216 transitions. Word has length 28 [2021-11-23 13:46:21,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:21,011 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 216 transitions. [2021-11-23 13:46:21,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:21,011 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 216 transitions. [2021-11-23 13:46:21,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 13:46:21,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:21,020 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:46:21,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:46:21,020 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:21,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:21,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1795462988, now seen corresponding path program 1 times [2021-11-23 13:46:21,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:21,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795910599] [2021-11-23 13:46:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:21,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:21,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:21,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795910599] [2021-11-23 13:46:21,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795910599] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:46:21,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865656694] [2021-11-23 13:46:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:21,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:21,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:21,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:46:21,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:46:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:21,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 13:46:21,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:21,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 13:46:22,111 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 13:46:22,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 13:46:22,201 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:46:22,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 13:46:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:22,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:46:23,665 WARN L838 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) |c_system_initialize_~#e~1.offset| ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2021-11-23 13:46:25,721 WARN L838 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) 0 ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2021-11-23 13:46:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:25,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865656694] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 13:46:25,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:46:25,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10] total 21 [2021-11-23 13:46:25,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710167505] [2021-11-23 13:46:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:25,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:25,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:25,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:25,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=273, Unknown=2, NotChecked=70, Total=420 [2021-11-23 13:46:25,810 INFO L87 Difference]: Start difference. First operand 157 states and 216 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:27,713 WARN L838 $PredicateComparison]: unable to prove that (and (not (= ~sys_state_s~0~AS_IDLE (select (select |c_#memory_int| c_~user~0.base) c_~user~0.offset))) (forall ((|system_initialize_~#e~1.base| Int)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) 0 ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) (not (= |c_ASNull_status_update_~status#1| ~sys_state_s~0~AS_IDLE))) is different from false [2021-11-23 13:46:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:28,287 INFO L93 Difference]: Finished difference Result 384 states and 568 transitions. [2021-11-23 13:46:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:46:28,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-23 13:46:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:28,301 INFO L225 Difference]: With dead ends: 384 [2021-11-23 13:46:28,302 INFO L226 Difference]: Without dead ends: 241 [2021-11-23 13:46:28,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=91, Invalid=380, Unknown=3, NotChecked=126, Total=600 [2021-11-23 13:46:28,306 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 91 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:28,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 912 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 171 Invalid, 0 Unknown, 253 Unchecked, 0.6s Time] [2021-11-23 13:46:28,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-11-23 13:46:28,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 226. [2021-11-23 13:46:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 178 states have (on average 1.3876404494382022) internal successors, (247), 182 states have internal predecessors, (247), 31 states have call successors, (31), 15 states have call predecessors, (31), 16 states have return successors, (45), 28 states have call predecessors, (45), 27 states have call successors, (45) [2021-11-23 13:46:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 323 transitions. [2021-11-23 13:46:28,380 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 323 transitions. Word has length 28 [2021-11-23 13:46:28,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:28,381 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 323 transitions. [2021-11-23 13:46:28,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 4 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:28,382 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 323 transitions. [2021-11-23 13:46:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 13:46:28,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:28,393 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:46:28,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:28,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:28,594 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash -207874138, now seen corresponding path program 1 times [2021-11-23 13:46:28,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:28,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614699755] [2021-11-23 13:46:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:28,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:28,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:28,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614699755] [2021-11-23 13:46:28,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614699755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:28,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:28,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:46:28,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231574999] [2021-11-23 13:46:28,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:28,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:46:28,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:46:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:46:28,857 INFO L87 Difference]: Start difference. First operand 226 states and 323 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:29,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:29,731 INFO L93 Difference]: Finished difference Result 449 states and 643 transitions. [2021-11-23 13:46:29,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:46:29,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 13:46:29,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:29,735 INFO L225 Difference]: With dead ends: 449 [2021-11-23 13:46:29,735 INFO L226 Difference]: Without dead ends: 232 [2021-11-23 13:46:29,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:46:29,738 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 18 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:29,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 786 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:46:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-23 13:46:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 229. [2021-11-23 13:46:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 181 states have (on average 1.3812154696132597) internal successors, (250), 184 states have internal predecessors, (250), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (45), 28 states have call predecessors, (45), 27 states have call successors, (45) [2021-11-23 13:46:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 326 transitions. [2021-11-23 13:46:29,766 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 326 transitions. Word has length 30 [2021-11-23 13:46:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:29,766 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 326 transitions. [2021-11-23 13:46:29,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 326 transitions. [2021-11-23 13:46:29,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 13:46:29,770 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:29,770 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:46:29,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:46:29,771 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:29,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash 546026941, now seen corresponding path program 1 times [2021-11-23 13:46:29,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:29,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952307785] [2021-11-23 13:46:29,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:29,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:30,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:30,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952307785] [2021-11-23 13:46:30,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952307785] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:46:30,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556067522] [2021-11-23 13:46:30,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:30,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:30,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:30,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:46:30,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:46:30,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:30,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 13:46:30,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:30,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 13:46:30,493 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-23 13:46:30,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-23 13:46:30,593 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:46:30,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-11-23 13:46:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:30,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:46:32,726 WARN L838 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) |c_system_initialize_~#e~1.offset| ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2021-11-23 13:46:34,107 WARN L838 $PredicateComparison]: unable to prove that (forall ((|system_initialize_~#e~1.base| Int)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) 0 ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset)))) is different from false [2021-11-23 13:46:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:34,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556067522] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 13:46:34,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:46:34,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10] total 21 [2021-11-23 13:46:34,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162966449] [2021-11-23 13:46:34,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:34,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:34,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:34,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=273, Unknown=2, NotChecked=70, Total=420 [2021-11-23 13:46:34,186 INFO L87 Difference]: Start difference. First operand 229 states and 326 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:35,439 WARN L838 $PredicateComparison]: unable to prove that (and (not (= ~sys_state_s~0~AS_IDLE (select (select |c_#memory_int| c_~user~0.base) c_~user~0.offset))) (not (= ~sys_state_s~0~AS_IDLE |c_ASStop_status_update_~status#1|)) (forall ((|system_initialize_~#e~1.base| Int)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |system_initialize_~#e~1.base| (store (select |c_#memory_int| |system_initialize_~#e~1.base|) 0 ~e_primitive_s~0~_EVENT_OPEN)) c_~user~0.base) c_~user~0.offset))))) is different from false [2021-11-23 13:46:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:35,884 INFO L93 Difference]: Finished difference Result 651 states and 997 transitions. [2021-11-23 13:46:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:46:35,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-23 13:46:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:35,890 INFO L225 Difference]: With dead ends: 651 [2021-11-23 13:46:35,890 INFO L226 Difference]: Without dead ends: 401 [2021-11-23 13:46:35,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=91, Invalid=380, Unknown=3, NotChecked=126, Total=600 [2021-11-23 13:46:35,894 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 150 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 340 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:35,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1027 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 216 Invalid, 0 Unknown, 340 Unchecked, 0.5s Time] [2021-11-23 13:46:35,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-11-23 13:46:35,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 371. [2021-11-23 13:46:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 294 states have (on average 1.3503401360544218) internal successors, (397), 290 states have internal predecessors, (397), 47 states have call successors, (47), 26 states have call predecessors, (47), 29 states have return successors, (95), 54 states have call predecessors, (95), 38 states have call successors, (95) [2021-11-23 13:46:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 539 transitions. [2021-11-23 13:46:35,932 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 539 transitions. Word has length 31 [2021-11-23 13:46:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:35,932 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 539 transitions. [2021-11-23 13:46:35,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 4 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:35,933 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 539 transitions. [2021-11-23 13:46:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 13:46:35,935 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:35,936 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 13:46:35,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:46:36,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-23 13:46:36,157 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:36,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:36,158 INFO L85 PathProgramCache]: Analyzing trace with hash -181618192, now seen corresponding path program 1 times [2021-11-23 13:46:36,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:36,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982487087] [2021-11-23 13:46:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:36,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:36,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:36,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982487087] [2021-11-23 13:46:36,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982487087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:36,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:36,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:46:36,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12467533] [2021-11-23 13:46:36,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:36,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:36,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:36,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:36,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:46:36,320 INFO L87 Difference]: Start difference. First operand 371 states and 539 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:37,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:37,063 INFO L93 Difference]: Finished difference Result 705 states and 1029 transitions. [2021-11-23 13:46:37,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:46:37,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-23 13:46:37,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:37,069 INFO L225 Difference]: With dead ends: 705 [2021-11-23 13:46:37,069 INFO L226 Difference]: Without dead ends: 375 [2021-11-23 13:46:37,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:46:37,073 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 13 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:37,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 950 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:46:37,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-23 13:46:37,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 368. [2021-11-23 13:46:37,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 292 states have (on average 1.3493150684931507) internal successors, (394), 288 states have internal predecessors, (394), 46 states have call successors, (46), 25 states have call predecessors, (46), 29 states have return successors, (95), 54 states have call predecessors, (95), 38 states have call successors, (95) [2021-11-23 13:46:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 535 transitions. [2021-11-23 13:46:37,106 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 535 transitions. Word has length 31 [2021-11-23 13:46:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:37,107 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 535 transitions. [2021-11-23 13:46:37,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (5), 3 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:37,107 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 535 transitions. [2021-11-23 13:46:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 13:46:37,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:37,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:37,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:46:37,111 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:37,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:37,112 INFO L85 PathProgramCache]: Analyzing trace with hash 100604004, now seen corresponding path program 1 times [2021-11-23 13:46:37,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:37,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657627876] [2021-11-23 13:46:37,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:37,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:37,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:37,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657627876] [2021-11-23 13:46:37,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657627876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:37,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:37,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:46:37,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521782173] [2021-11-23 13:46:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:37,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:46:37,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:37,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:46:37,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:46:37,312 INFO L87 Difference]: Start difference. First operand 368 states and 535 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 4 states have call successors, (8), 4 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:38,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:38,233 INFO L93 Difference]: Finished difference Result 711 states and 1121 transitions. [2021-11-23 13:46:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:46:38,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 4 states have call successors, (8), 4 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-23 13:46:38,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:38,239 INFO L225 Difference]: With dead ends: 711 [2021-11-23 13:46:38,240 INFO L226 Difference]: Without dead ends: 385 [2021-11-23 13:46:38,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:46:38,250 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 38 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:38,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 832 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:46:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-23 13:46:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 374. [2021-11-23 13:46:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 296 states have (on average 1.3445945945945945) internal successors, (398), 292 states have internal predecessors, (398), 47 states have call successors, (47), 26 states have call predecessors, (47), 30 states have return successors, (96), 55 states have call predecessors, (96), 39 states have call successors, (96) [2021-11-23 13:46:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 541 transitions. [2021-11-23 13:46:38,300 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 541 transitions. Word has length 41 [2021-11-23 13:46:38,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:38,301 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 541 transitions. [2021-11-23 13:46:38,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 4 states have call successors, (8), 4 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 541 transitions. [2021-11-23 13:46:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 13:46:38,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:38,308 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 13:46:38,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:46:38,309 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:38,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1282117126, now seen corresponding path program 1 times [2021-11-23 13:46:38,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:38,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507225207] [2021-11-23 13:46:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:38,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:38,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:38,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507225207] [2021-11-23 13:46:38,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507225207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:38,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:38,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:46:38,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912151925] [2021-11-23 13:46:38,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:38,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:46:38,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:38,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:38,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:38,431 INFO L87 Difference]: Start difference. First operand 374 states and 541 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:38,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:38,458 INFO L93 Difference]: Finished difference Result 712 states and 1111 transitions. [2021-11-23 13:46:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:38,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-23 13:46:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:38,463 INFO L225 Difference]: With dead ends: 712 [2021-11-23 13:46:38,464 INFO L226 Difference]: Without dead ends: 380 [2021-11-23 13:46:38,467 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 [2021-11-23 13:46:38,468 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 7 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:38,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 318 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:46:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-23 13:46:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 374. [2021-11-23 13:46:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 296 states have (on average 1.337837837837838) internal successors, (396), 292 states have internal predecessors, (396), 47 states have call successors, (47), 26 states have call predecessors, (47), 30 states have return successors, (96), 55 states have call predecessors, (96), 39 states have call successors, (96) [2021-11-23 13:46:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 539 transitions. [2021-11-23 13:46:38,514 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 539 transitions. Word has length 41 [2021-11-23 13:46:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:38,514 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 539 transitions. [2021-11-23 13:46:38,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 2 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 539 transitions. [2021-11-23 13:46:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 13:46:38,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:38,518 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 13:46:38,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:46:38,518 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:38,520 INFO L85 PathProgramCache]: Analyzing trace with hash -68347259, now seen corresponding path program 1 times [2021-11-23 13:46:38,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:38,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047316265] [2021-11-23 13:46:38,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:38,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:38,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:38,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047316265] [2021-11-23 13:46:38,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047316265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:38,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:38,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:46:38,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034997449] [2021-11-23 13:46:38,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:38,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:46:38,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:38,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:46:38,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:46:38,660 INFO L87 Difference]: Start difference. First operand 374 states and 539 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:39,092 INFO L93 Difference]: Finished difference Result 841 states and 1333 transitions. [2021-11-23 13:46:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:46:39,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-23 13:46:39,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:39,099 INFO L225 Difference]: With dead ends: 841 [2021-11-23 13:46:39,099 INFO L226 Difference]: Without dead ends: 509 [2021-11-23 13:46:39,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:46:39,104 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 115 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:39,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 1064 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:46:39,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-23 13:46:39,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 471. [2021-11-23 13:46:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 373 states have (on average 1.3002680965147453) internal successors, (485), 361 states have internal predecessors, (485), 54 states have call successors, (54), 28 states have call predecessors, (54), 43 states have return successors, (155), 81 states have call predecessors, (155), 46 states have call successors, (155) [2021-11-23 13:46:39,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 694 transitions. [2021-11-23 13:46:39,143 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 694 transitions. Word has length 42 [2021-11-23 13:46:39,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:39,144 INFO L470 AbstractCegarLoop]: Abstraction has 471 states and 694 transitions. [2021-11-23 13:46:39,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 694 transitions. [2021-11-23 13:46:39,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 13:46:39,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:39,147 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-23 13:46:39,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:46:39,147 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:39,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash -655153273, now seen corresponding path program 1 times [2021-11-23 13:46:39,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:39,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259761713] [2021-11-23 13:46:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:39,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:46:39,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:39,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259761713] [2021-11-23 13:46:39,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259761713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:39,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:39,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:46:39,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391649574] [2021-11-23 13:46:39,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:39,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:46:39,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:39,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:46:39,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:46:39,294 INFO L87 Difference]: Start difference. First operand 471 states and 694 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:40,479 INFO L93 Difference]: Finished difference Result 1176 states and 2058 transitions. [2021-11-23 13:46:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:46:40,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-23 13:46:40,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:40,492 INFO L225 Difference]: With dead ends: 1176 [2021-11-23 13:46:40,492 INFO L226 Difference]: Without dead ends: 747 [2021-11-23 13:46:40,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:46:40,499 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 142 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:40,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 826 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:46:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2021-11-23 13:46:40,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 731. [2021-11-23 13:46:40,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 584 states have (on average 1.2876712328767124) internal successors, (752), 559 states have internal predecessors, (752), 71 states have call successors, (71), 38 states have call predecessors, (71), 75 states have return successors, (358), 133 states have call predecessors, (358), 63 states have call successors, (358) [2021-11-23 13:46:40,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1181 transitions. [2021-11-23 13:46:40,572 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1181 transitions. Word has length 42 [2021-11-23 13:46:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:40,573 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 1181 transitions. [2021-11-23 13:46:40,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (7), 3 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:40,573 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1181 transitions. [2021-11-23 13:46:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 13:46:40,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:40,578 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:40,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:46:40,578 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1241474898, now seen corresponding path program 1 times [2021-11-23 13:46:40,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:40,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433088254] [2021-11-23 13:46:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:40,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:40,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:40,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433088254] [2021-11-23 13:46:40,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433088254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:40,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:40,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:46:40,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432188726] [2021-11-23 13:46:40,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:40,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:46:40,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:40,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:46:40,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:46:40,847 INFO L87 Difference]: Start difference. First operand 731 states and 1181 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:42,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:42,005 INFO L93 Difference]: Finished difference Result 1474 states and 2739 transitions. [2021-11-23 13:46:42,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:46:42,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-23 13:46:42,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:42,043 INFO L225 Difference]: With dead ends: 1474 [2021-11-23 13:46:42,044 INFO L226 Difference]: Without dead ends: 785 [2021-11-23 13:46:42,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:46:42,053 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 46 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:42,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 855 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:46:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2021-11-23 13:46:42,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 757. [2021-11-23 13:46:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 606 states have (on average 1.2904290429042904) internal successors, (782), 581 states have internal predecessors, (782), 73 states have call successors, (73), 40 states have call predecessors, (73), 77 states have return successors, (370), 135 states have call predecessors, (370), 65 states have call successors, (370) [2021-11-23 13:46:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1225 transitions. [2021-11-23 13:46:42,132 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1225 transitions. Word has length 43 [2021-11-23 13:46:42,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:42,133 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 1225 transitions. [2021-11-23 13:46:42,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:42,133 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1225 transitions. [2021-11-23 13:46:42,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 13:46:42,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:42,137 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:42,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:46:42,137 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:42,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:42,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1093085038, now seen corresponding path program 1 times [2021-11-23 13:46:42,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:42,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829309066] [2021-11-23 13:46:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:42,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:42,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:42,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829309066] [2021-11-23 13:46:42,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829309066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:42,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:42,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:46:42,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980330065] [2021-11-23 13:46:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:42,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:42,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:42,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:42,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:46:42,253 INFO L87 Difference]: Start difference. First operand 757 states and 1225 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (7), 4 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:43,220 INFO L93 Difference]: Finished difference Result 1495 states and 2766 transitions. [2021-11-23 13:46:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:46:43,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (7), 4 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-23 13:46:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:43,233 INFO L225 Difference]: With dead ends: 1495 [2021-11-23 13:46:43,233 INFO L226 Difference]: Without dead ends: 780 [2021-11-23 13:46:43,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:46:43,244 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 73 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:43,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 977 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:46:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-11-23 13:46:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 765. [2021-11-23 13:46:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 610 states have (on average 1.2688524590163934) internal successors, (774), 589 states have internal predecessors, (774), 73 states have call successors, (73), 40 states have call predecessors, (73), 81 states have return successors, (365), 135 states have call predecessors, (365), 65 states have call successors, (365) [2021-11-23 13:46:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1212 transitions. [2021-11-23 13:46:43,315 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1212 transitions. Word has length 42 [2021-11-23 13:46:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:43,315 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1212 transitions. [2021-11-23 13:46:43,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (7), 4 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:43,315 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1212 transitions. [2021-11-23 13:46:43,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 13:46:43,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:43,319 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:43,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:46:43,319 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:43,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash 819392128, now seen corresponding path program 1 times [2021-11-23 13:46:43,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:43,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341616914] [2021-11-23 13:46:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:43,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:43,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:43,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341616914] [2021-11-23 13:46:43,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341616914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:43,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:43,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:46:43,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575256557] [2021-11-23 13:46:43,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:43,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:46:43,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:43,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:46:43,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:46:43,464 INFO L87 Difference]: Start difference. First operand 765 states and 1212 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:44,324 INFO L93 Difference]: Finished difference Result 1515 states and 2722 transitions. [2021-11-23 13:46:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:46:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-23 13:46:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:44,337 INFO L225 Difference]: With dead ends: 1515 [2021-11-23 13:46:44,337 INFO L226 Difference]: Without dead ends: 792 [2021-11-23 13:46:44,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:46:44,348 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 38 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:44,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 813 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:46:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2021-11-23 13:46:44,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 774. [2021-11-23 13:46:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 617 states have (on average 1.2690437601296596) internal successors, (783), 596 states have internal predecessors, (783), 74 states have call successors, (74), 41 states have call predecessors, (74), 82 states have return successors, (371), 136 states have call predecessors, (371), 66 states have call successors, (371) [2021-11-23 13:46:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1228 transitions. [2021-11-23 13:46:44,427 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1228 transitions. Word has length 43 [2021-11-23 13:46:44,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:44,428 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1228 transitions. [2021-11-23 13:46:44,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (8), 4 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1228 transitions. [2021-11-23 13:46:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 13:46:44,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:44,432 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:44,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:46:44,432 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:44,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:44,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1552347134, now seen corresponding path program 1 times [2021-11-23 13:46:44,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:44,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923862214] [2021-11-23 13:46:44,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:44,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:44,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:44,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923862214] [2021-11-23 13:46:44,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923862214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:44,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:44,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:46:44,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933187587] [2021-11-23 13:46:44,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:44,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:44,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:44,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:44,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:46:44,598 INFO L87 Difference]: Start difference. First operand 774 states and 1228 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:45,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:45,623 INFO L93 Difference]: Finished difference Result 1562 states and 2828 transitions. [2021-11-23 13:46:45,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:46:45,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-23 13:46:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:45,638 INFO L225 Difference]: With dead ends: 1562 [2021-11-23 13:46:45,638 INFO L226 Difference]: Without dead ends: 830 [2021-11-23 13:46:45,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:46:45,652 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 52 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:45,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1087 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:46:45,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-11-23 13:46:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 823. [2021-11-23 13:46:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 656 states have (on average 1.2652439024390243) internal successors, (830), 637 states have internal predecessors, (830), 76 states have call successors, (76), 43 states have call predecessors, (76), 90 states have return successors, (383), 142 states have call predecessors, (383), 68 states have call successors, (383) [2021-11-23 13:46:45,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1289 transitions. [2021-11-23 13:46:45,772 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1289 transitions. Word has length 43 [2021-11-23 13:46:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:45,772 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1289 transitions. [2021-11-23 13:46:45,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:45,773 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1289 transitions. [2021-11-23 13:46:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 13:46:45,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:45,778 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:45,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:46:45,778 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:45,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash 555809883, now seen corresponding path program 1 times [2021-11-23 13:46:45,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:45,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791028345] [2021-11-23 13:46:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:45,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:45,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-23 13:46:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:45,915 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:45,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:45,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791028345] [2021-11-23 13:46:45,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791028345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:45,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:45,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:46:45,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556447114] [2021-11-23 13:46:45,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:45,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:46:45,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:45,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:46:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:46:45,918 INFO L87 Difference]: Start difference. First operand 823 states and 1289 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:46,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:46,669 INFO L93 Difference]: Finished difference Result 1708 states and 3087 transitions. [2021-11-23 13:46:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:46:46,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-11-23 13:46:46,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:46,684 INFO L225 Difference]: With dead ends: 1708 [2021-11-23 13:46:46,684 INFO L226 Difference]: Without dead ends: 927 [2021-11-23 13:46:46,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:46:46,696 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 83 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:46,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 608 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:46:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-11-23 13:46:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 883. [2021-11-23 13:46:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 702 states have (on average 1.2492877492877492) internal successors, (877), 681 states have internal predecessors, (877), 77 states have call successors, (77), 43 states have call predecessors, (77), 103 states have return successors, (437), 158 states have call predecessors, (437), 69 states have call successors, (437) [2021-11-23 13:46:46,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1391 transitions. [2021-11-23 13:46:46,793 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1391 transitions. Word has length 47 [2021-11-23 13:46:46,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:46,794 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1391 transitions. [2021-11-23 13:46:46,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1391 transitions. [2021-11-23 13:46:46,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 13:46:46,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:46,800 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:46,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:46:46,800 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:46,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:46,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1109861003, now seen corresponding path program 1 times [2021-11-23 13:46:46,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:46,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605413755] [2021-11-23 13:46:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:46,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:46:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:46,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:46,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605413755] [2021-11-23 13:46:46,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605413755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:46,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:46,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:46:46,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317766827] [2021-11-23 13:46:46,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:46,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:46:46,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:46,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:46:46,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:46:46,928 INFO L87 Difference]: Start difference. First operand 883 states and 1391 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:47,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:47,650 INFO L93 Difference]: Finished difference Result 1762 states and 3177 transitions. [2021-11-23 13:46:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:46:47,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-11-23 13:46:47,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:47,665 INFO L225 Difference]: With dead ends: 1762 [2021-11-23 13:46:47,665 INFO L226 Difference]: Without dead ends: 921 [2021-11-23 13:46:47,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:46:47,677 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 83 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:47,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 596 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:46:47,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-11-23 13:46:47,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 885. [2021-11-23 13:46:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 704 states have (on average 1.2485795454545454) internal successors, (879), 682 states have internal predecessors, (879), 77 states have call successors, (77), 43 states have call predecessors, (77), 103 states have return successors, (437), 159 states have call predecessors, (437), 69 states have call successors, (437) [2021-11-23 13:46:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1393 transitions. [2021-11-23 13:46:47,763 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1393 transitions. Word has length 48 [2021-11-23 13:46:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:47,764 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1393 transitions. [2021-11-23 13:46:47,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:47,764 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1393 transitions. [2021-11-23 13:46:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 13:46:47,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:47,769 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:47,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:46:47,769 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:47,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:47,770 INFO L85 PathProgramCache]: Analyzing trace with hash 409472679, now seen corresponding path program 1 times [2021-11-23 13:46:47,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:47,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133739236] [2021-11-23 13:46:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:47,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:47,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-23 13:46:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:47,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:47,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133739236] [2021-11-23 13:46:47,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133739236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:47,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:47,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:46:47,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105398427] [2021-11-23 13:46:47,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:47,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:47,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:47,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:46:47,889 INFO L87 Difference]: Start difference. First operand 885 states and 1393 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:49,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:49,338 INFO L93 Difference]: Finished difference Result 1843 states and 3388 transitions. [2021-11-23 13:46:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:46:49,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-11-23 13:46:49,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:49,353 INFO L225 Difference]: With dead ends: 1843 [2021-11-23 13:46:49,353 INFO L226 Difference]: Without dead ends: 1000 [2021-11-23 13:46:49,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:46:49,365 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 117 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:49,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 836 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 13:46:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-11-23 13:46:49,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 976. [2021-11-23 13:46:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 772 states have (on average 1.2487046632124352) internal successors, (964), 756 states have internal predecessors, (964), 90 states have call successors, (90), 48 states have call predecessors, (90), 113 states have return successors, (542), 171 states have call predecessors, (542), 82 states have call successors, (542) [2021-11-23 13:46:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1596 transitions. [2021-11-23 13:46:49,455 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1596 transitions. Word has length 49 [2021-11-23 13:46:49,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:49,456 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1596 transitions. [2021-11-23 13:46:49,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1596 transitions. [2021-11-23 13:46:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 13:46:49,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:49,462 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:49,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 13:46:49,463 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:49,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:49,463 INFO L85 PathProgramCache]: Analyzing trace with hash -796512856, now seen corresponding path program 1 times [2021-11-23 13:46:49,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:49,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562043620] [2021-11-23 13:46:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:49,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-23 13:46:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:46:49,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:49,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562043620] [2021-11-23 13:46:49,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562043620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:49,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:49,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:46:49,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830523569] [2021-11-23 13:46:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:49,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:49,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:46:49,599 INFO L87 Difference]: Start difference. First operand 976 states and 1596 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:51,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:51,193 INFO L93 Difference]: Finished difference Result 2059 states and 3970 transitions. [2021-11-23 13:46:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:46:51,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-11-23 13:46:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:51,214 INFO L225 Difference]: With dead ends: 2059 [2021-11-23 13:46:51,215 INFO L226 Difference]: Without dead ends: 1124 [2021-11-23 13:46:51,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:46:51,254 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 129 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:51,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 793 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 13:46:51,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-11-23 13:46:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1103. [2021-11-23 13:46:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 871 states have (on average 1.251435132032147) internal successors, (1090), 860 states have internal predecessors, (1090), 104 states have call successors, (104), 56 states have call predecessors, (104), 127 states have return successors, (648), 186 states have call predecessors, (648), 95 states have call successors, (648) [2021-11-23 13:46:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1842 transitions. [2021-11-23 13:46:51,375 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1842 transitions. Word has length 53 [2021-11-23 13:46:51,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:51,375 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 1842 transitions. [2021-11-23 13:46:51,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 4 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:51,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1842 transitions. [2021-11-23 13:46:51,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 13:46:51,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:51,382 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:51,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 13:46:51,383 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:51,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:51,384 INFO L85 PathProgramCache]: Analyzing trace with hash 752913393, now seen corresponding path program 1 times [2021-11-23 13:46:51,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:51,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730720992] [2021-11-23 13:46:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:51,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:51,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-23 13:46:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:46:51,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:51,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730720992] [2021-11-23 13:46:51,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730720992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:51,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:51,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:46:51,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284476966] [2021-11-23 13:46:51,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:51,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:46:51,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:51,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:46:51,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:46:51,506 INFO L87 Difference]: Start difference. First operand 1103 states and 1842 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:52,952 INFO L93 Difference]: Finished difference Result 2218 states and 3719 transitions. [2021-11-23 13:46:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:46:52,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-11-23 13:46:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:52,973 INFO L225 Difference]: With dead ends: 2218 [2021-11-23 13:46:52,973 INFO L226 Difference]: Without dead ends: 1124 [2021-11-23 13:46:52,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:46:52,987 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 123 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:52,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 712 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 13:46:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2021-11-23 13:46:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1108. [2021-11-23 13:46:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 875 states have (on average 1.2502857142857142) internal successors, (1094), 864 states have internal predecessors, (1094), 105 states have call successors, (105), 57 states have call predecessors, (105), 127 states have return successors, (648), 186 states have call predecessors, (648), 95 states have call successors, (648) [2021-11-23 13:46:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1847 transitions. [2021-11-23 13:46:53,127 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1847 transitions. Word has length 52 [2021-11-23 13:46:53,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:53,127 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 1847 transitions. [2021-11-23 13:46:53,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:53,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1847 transitions. [2021-11-23 13:46:53,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 13:46:53,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:53,138 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:53,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 13:46:53,139 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2449849, now seen corresponding path program 1 times [2021-11-23 13:46:53,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:53,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116397974] [2021-11-23 13:46:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:53,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:46:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:53,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:53,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116397974] [2021-11-23 13:46:53,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116397974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:53,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:53,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:46:53,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251009557] [2021-11-23 13:46:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:53,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:46:53,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:46:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:46:53,271 INFO L87 Difference]: Start difference. First operand 1108 states and 1847 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:53,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:53,889 INFO L93 Difference]: Finished difference Result 2187 states and 4194 transitions. [2021-11-23 13:46:53,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:46:53,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-11-23 13:46:53,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:53,910 INFO L225 Difference]: With dead ends: 2187 [2021-11-23 13:46:53,910 INFO L226 Difference]: Without dead ends: 1131 [2021-11-23 13:46:53,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:46:53,919 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 77 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:53,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 314 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:46:53,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-11-23 13:46:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1130. [2021-11-23 13:46:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 890 states have (on average 1.243820224719101) internal successors, (1107), 881 states have internal predecessors, (1107), 107 states have call successors, (107), 57 states have call predecessors, (107), 132 states have return successors, (693), 191 states have call predecessors, (693), 97 states have call successors, (693) [2021-11-23 13:46:54,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1907 transitions. [2021-11-23 13:46:54,076 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1907 transitions. Word has length 50 [2021-11-23 13:46:54,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:54,077 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1907 transitions. [2021-11-23 13:46:54,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:54,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1907 transitions. [2021-11-23 13:46:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 13:46:54,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:54,084 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:54,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 13:46:54,085 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -481737321, now seen corresponding path program 1 times [2021-11-23 13:46:54,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:54,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179750175] [2021-11-23 13:46:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:54,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:54,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:46:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:54,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:54,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179750175] [2021-11-23 13:46:54,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179750175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:54,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:54,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 13:46:54,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088881903] [2021-11-23 13:46:54,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:54,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:46:54,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:54,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:46:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:46:54,273 INFO L87 Difference]: Start difference. First operand 1130 states and 1907 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:55,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:55,834 INFO L93 Difference]: Finished difference Result 2289 states and 4464 transitions. [2021-11-23 13:46:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:46:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-11-23 13:46:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:55,856 INFO L225 Difference]: With dead ends: 2289 [2021-11-23 13:46:55,856 INFO L226 Difference]: Without dead ends: 1211 [2021-11-23 13:46:55,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:46:55,870 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 125 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:55,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 1037 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 13:46:55,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-23 13:46:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1198. [2021-11-23 13:46:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 943 states have (on average 1.2428419936373276) internal successors, (1172), 936 states have internal predecessors, (1172), 113 states have call successors, (113), 60 states have call predecessors, (113), 141 states have return successors, (739), 201 states have call predecessors, (739), 103 states have call successors, (739) [2021-11-23 13:46:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 2024 transitions. [2021-11-23 13:46:56,015 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 2024 transitions. Word has length 51 [2021-11-23 13:46:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:56,016 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 2024 transitions. [2021-11-23 13:46:56,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:46:56,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 2024 transitions. [2021-11-23 13:46:56,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 13:46:56,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:56,024 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 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] [2021-11-23 13:46:56,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 13:46:56,025 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:56,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:56,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1130655376, now seen corresponding path program 1 times [2021-11-23 13:46:56,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:56,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175185584] [2021-11-23 13:46:56,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:56,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:56,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:56,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175185584] [2021-11-23 13:46:56,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175185584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:56,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:56,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:46:56,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067782717] [2021-11-23 13:46:56,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:56,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:46:56,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:46:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:46:56,205 INFO L87 Difference]: Start difference. First operand 1198 states and 2024 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (11), 4 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:57,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:57,084 INFO L93 Difference]: Finished difference Result 2357 states and 4614 transitions. [2021-11-23 13:46:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:46:57,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (11), 4 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-23 13:46:57,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:57,104 INFO L225 Difference]: With dead ends: 2357 [2021-11-23 13:46:57,105 INFO L226 Difference]: Without dead ends: 1211 [2021-11-23 13:46:57,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:46:57,114 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 38 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:57,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 851 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:46:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2021-11-23 13:46:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1204. [2021-11-23 13:46:57,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 947 states have (on average 1.2418162618796198) internal successors, (1176), 940 states have internal predecessors, (1176), 114 states have call successors, (114), 61 states have call predecessors, (114), 142 states have return successors, (740), 202 states have call predecessors, (740), 104 states have call successors, (740) [2021-11-23 13:46:57,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 2030 transitions. [2021-11-23 13:46:57,251 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 2030 transitions. Word has length 56 [2021-11-23 13:46:57,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:57,252 INFO L470 AbstractCegarLoop]: Abstraction has 1204 states and 2030 transitions. [2021-11-23 13:46:57,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 4 states have call successors, (11), 4 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 2030 transitions. [2021-11-23 13:46:57,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 13:46:57,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:57,260 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:46:57,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 13:46:57,261 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:57,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:57,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1730447537, now seen corresponding path program 1 times [2021-11-23 13:46:57,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:57,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161002949] [2021-11-23 13:46:57,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:57,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:46:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:57,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:46:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:46:57,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:57,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161002949] [2021-11-23 13:46:57,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161002949] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:46:57,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623444410] [2021-11-23 13:46:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:57,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:57,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:46:57,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:46:57,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:46:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:57,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:46:57,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:46:57,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:46:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:46:57,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:46:57,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:46:57,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:46:57,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:46:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:46:58,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623444410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:46:58,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:46:58,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2021-11-23 13:46:58,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297924024] [2021-11-23 13:46:58,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:46:58,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:46:58,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:46:58,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:46:58,019 INFO L87 Difference]: Start difference. First operand 1204 states and 2030 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 13:46:59,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:59,375 INFO L93 Difference]: Finished difference Result 2707 states and 5325 transitions. [2021-11-23 13:46:59,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:46:59,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-23 13:46:59,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:46:59,401 INFO L225 Difference]: With dead ends: 2707 [2021-11-23 13:46:59,402 INFO L226 Difference]: Without dead ends: 1555 [2021-11-23 13:46:59,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:46:59,411 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 178 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:46:59,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 1000 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 13:46:59,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-11-23 13:46:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1523. [2021-11-23 13:46:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1193 states have (on average 1.1969823973176865) internal successors, (1428), 1155 states have internal predecessors, (1428), 123 states have call successors, (123), 64 states have call predecessors, (123), 206 states have return successors, (1135), 303 states have call predecessors, (1135), 113 states have call successors, (1135) [2021-11-23 13:46:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2686 transitions. [2021-11-23 13:46:59,547 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2686 transitions. Word has length 55 [2021-11-23 13:46:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:46:59,547 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 2686 transitions. [2021-11-23 13:46:59,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 13:46:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2686 transitions. [2021-11-23 13:46:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 13:46:59,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:46:59,557 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2021-11-23 13:46:59,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-23 13:46:59,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:46:59,773 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:46:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:46:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2000798249, now seen corresponding path program 1 times [2021-11-23 13:46:59,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:46:59,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445335710] [2021-11-23 13:46:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:46:59,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:46:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:46:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-23 13:46:59,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:46:59,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445335710] [2021-11-23 13:46:59,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445335710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:46:59,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:46:59,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:46:59,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213654575] [2021-11-23 13:46:59,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:46:59,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:46:59,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:46:59,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:46:59,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:46:59,858 INFO L87 Difference]: Start difference. First operand 1523 states and 2686 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 2 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:46:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:46:59,981 INFO L93 Difference]: Finished difference Result 3042 states and 6447 transitions. [2021-11-23 13:46:59,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:46:59,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 2 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-23 13:46:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:00,008 INFO L225 Difference]: With dead ends: 3042 [2021-11-23 13:47:00,008 INFO L226 Difference]: Without dead ends: 1533 [2021-11-23 13:47:00,020 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 [2021-11-23 13:47:00,021 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 11 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:00,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 292 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:47:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2021-11-23 13:47:00,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1523. [2021-11-23 13:47:00,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1193 states have (on average 1.1844090528080469) internal successors, (1413), 1155 states have internal predecessors, (1413), 123 states have call successors, (123), 64 states have call predecessors, (123), 206 states have return successors, (1135), 303 states have call predecessors, (1135), 113 states have call successors, (1135) [2021-11-23 13:47:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2671 transitions. [2021-11-23 13:47:00,182 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2671 transitions. Word has length 57 [2021-11-23 13:47:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:00,182 INFO L470 AbstractCegarLoop]: Abstraction has 1523 states and 2671 transitions. [2021-11-23 13:47:00,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 2 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:00,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2671 transitions. [2021-11-23 13:47:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 13:47:00,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:00,194 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2021-11-23 13:47:00,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 13:47:00,194 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:00,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash -758745640, now seen corresponding path program 1 times [2021-11-23 13:47:00,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:00,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213245100] [2021-11-23 13:47:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:00,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:47:00,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:00,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213245100] [2021-11-23 13:47:00,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213245100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:00,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:00,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:47:00,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708156581] [2021-11-23 13:47:00,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:00,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:47:00,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:00,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:47:00,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:47:00,331 INFO L87 Difference]: Start difference. First operand 1523 states and 2671 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (10), 3 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:01,123 INFO L93 Difference]: Finished difference Result 3018 states and 6223 transitions. [2021-11-23 13:47:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:47:01,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (10), 3 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-23 13:47:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:01,162 INFO L225 Difference]: With dead ends: 3018 [2021-11-23 13:47:01,162 INFO L226 Difference]: Without dead ends: 1547 [2021-11-23 13:47:01,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:47:01,175 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 88 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:01,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 926 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:47:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2021-11-23 13:47:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1536. [2021-11-23 13:47:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1201 states have (on average 1.1823480432972522) internal successors, (1420), 1172 states have internal predecessors, (1420), 122 states have call successors, (122), 64 states have call predecessors, (122), 212 states have return successors, (1133), 299 states have call predecessors, (1133), 112 states have call successors, (1133) [2021-11-23 13:47:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2675 transitions. [2021-11-23 13:47:01,326 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2675 transitions. Word has length 58 [2021-11-23 13:47:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:01,326 INFO L470 AbstractCegarLoop]: Abstraction has 1536 states and 2675 transitions. [2021-11-23 13:47:01,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (10), 3 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:01,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2675 transitions. [2021-11-23 13:47:01,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 13:47:01,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:01,338 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:01,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 13:47:01,340 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:01,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:01,340 INFO L85 PathProgramCache]: Analyzing trace with hash -122039979, now seen corresponding path program 1 times [2021-11-23 13:47:01,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:01,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300023234] [2021-11-23 13:47:01,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:01,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:47:01,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:01,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300023234] [2021-11-23 13:47:01,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300023234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:01,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:01,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:47:01,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406042331] [2021-11-23 13:47:01,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:01,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:47:01,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:01,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:47:01,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:47:01,525 INFO L87 Difference]: Start difference. First operand 1536 states and 2675 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:02,434 INFO L93 Difference]: Finished difference Result 3044 states and 6319 transitions. [2021-11-23 13:47:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:47:02,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-23 13:47:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:02,456 INFO L225 Difference]: With dead ends: 3044 [2021-11-23 13:47:02,457 INFO L226 Difference]: Without dead ends: 1560 [2021-11-23 13:47:02,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:47:02,469 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 44 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:02,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 890 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:47:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-11-23 13:47:02,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1549. [2021-11-23 13:47:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1212 states have (on average 1.183168316831683) internal successors, (1434), 1183 states have internal predecessors, (1434), 123 states have call successors, (123), 65 states have call predecessors, (123), 213 states have return successors, (1145), 300 states have call predecessors, (1145), 113 states have call successors, (1145) [2021-11-23 13:47:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2702 transitions. [2021-11-23 13:47:02,606 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2702 transitions. Word has length 59 [2021-11-23 13:47:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:02,607 INFO L470 AbstractCegarLoop]: Abstraction has 1549 states and 2702 transitions. [2021-11-23 13:47:02,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 4 states have call successors, (11), 4 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:02,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2702 transitions. [2021-11-23 13:47:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 13:47:02,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:02,618 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:02,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 13:47:02,619 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash -503760210, now seen corresponding path program 1 times [2021-11-23 13:47:02,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:02,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8833048] [2021-11-23 13:47:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:02,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:47:02,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:02,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8833048] [2021-11-23 13:47:02,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8833048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:02,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:02,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:47:02,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770250395] [2021-11-23 13:47:02,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:02,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:47:02,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:47:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:47:02,729 INFO L87 Difference]: Start difference. First operand 1549 states and 2702 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (10), 4 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:03,632 INFO L93 Difference]: Finished difference Result 3065 states and 6350 transitions. [2021-11-23 13:47:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:47:03,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (10), 4 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-23 13:47:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:03,665 INFO L225 Difference]: With dead ends: 3065 [2021-11-23 13:47:03,665 INFO L226 Difference]: Without dead ends: 1568 [2021-11-23 13:47:03,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:47:03,676 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 67 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:03,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1013 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:47:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2021-11-23 13:47:03,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1549. [2021-11-23 13:47:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1212 states have (on average 1.1823432343234324) internal successors, (1433), 1183 states have internal predecessors, (1433), 123 states have call successors, (123), 65 states have call predecessors, (123), 213 states have return successors, (1129), 300 states have call predecessors, (1129), 113 states have call successors, (1129) [2021-11-23 13:47:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2685 transitions. [2021-11-23 13:47:03,814 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2685 transitions. Word has length 58 [2021-11-23 13:47:03,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:03,814 INFO L470 AbstractCegarLoop]: Abstraction has 1549 states and 2685 transitions. [2021-11-23 13:47:03,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (10), 4 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:47:03,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2685 transitions. [2021-11-23 13:47:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 13:47:03,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:03,829 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:03,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 13:47:03,830 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:03,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1493515486, now seen corresponding path program 1 times [2021-11-23 13:47:03,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:03,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521826103] [2021-11-23 13:47:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:03,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-23 13:47:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:47:04,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:04,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521826103] [2021-11-23 13:47:04,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521826103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:04,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:04,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:47:04,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76175025] [2021-11-23 13:47:04,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:04,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:47:04,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:04,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:47:04,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:47:04,054 INFO L87 Difference]: Start difference. First operand 1549 states and 2685 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:47:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:05,808 INFO L93 Difference]: Finished difference Result 3060 states and 6229 transitions. [2021-11-23 13:47:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:47:05,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-11-23 13:47:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:05,832 INFO L225 Difference]: With dead ends: 3060 [2021-11-23 13:47:05,832 INFO L226 Difference]: Without dead ends: 1563 [2021-11-23 13:47:05,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:47:05,847 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 111 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:05,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 848 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-23 13:47:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-11-23 13:47:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1557. [2021-11-23 13:47:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1218 states have (on average 1.1814449917898193) internal successors, (1439), 1189 states have internal predecessors, (1439), 123 states have call successors, (123), 67 states have call predecessors, (123), 215 states have return successors, (1113), 300 states have call predecessors, (1113), 113 states have call successors, (1113) [2021-11-23 13:47:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2675 transitions. [2021-11-23 13:47:05,982 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2675 transitions. Word has length 65 [2021-11-23 13:47:05,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:05,982 INFO L470 AbstractCegarLoop]: Abstraction has 1557 states and 2675 transitions. [2021-11-23 13:47:05,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 4 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 13:47:05,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2675 transitions. [2021-11-23 13:47:05,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-23 13:47:05,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:05,994 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:05,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 13:47:05,995 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:05,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1710962110, now seen corresponding path program 1 times [2021-11-23 13:47:05,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:05,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895728973] [2021-11-23 13:47:05,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:05,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:47:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 13:47:06,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:06,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895728973] [2021-11-23 13:47:06,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895728973] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:47:06,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303570262] [2021-11-23 13:47:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:06,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:47:06,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:47:06,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:47:06,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:47:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:06,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:47:06,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:47:06,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-23 13:47:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:47:06,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:47:06,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-23 13:47:06,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-23 13:47:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:47:07,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303570262] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:47:07,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:47:07,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 10 [2021-11-23 13:47:07,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461285558] [2021-11-23 13:47:07,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:47:07,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:47:07,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:07,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:47:07,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:47:07,162 INFO L87 Difference]: Start difference. First operand 1557 states and 2675 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:47:09,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:09,012 INFO L93 Difference]: Finished difference Result 3748 states and 8305 transitions. [2021-11-23 13:47:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:47:09,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 61 [2021-11-23 13:47:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:09,042 INFO L225 Difference]: With dead ends: 3748 [2021-11-23 13:47:09,042 INFO L226 Difference]: Without dead ends: 2243 [2021-11-23 13:47:09,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:47:09,058 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 397 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:09,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 856 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 13:47:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2021-11-23 13:47:09,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2186. [2021-11-23 13:47:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 1716 states have (on average 1.1608391608391608) internal successors, (1992), 1631 states have internal predecessors, (1992), 157 states have call successors, (157), 91 states have call predecessors, (157), 312 states have return successors, (2208), 463 states have call predecessors, (2208), 147 states have call successors, (2208) [2021-11-23 13:47:09,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 4357 transitions. [2021-11-23 13:47:09,309 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 4357 transitions. Word has length 61 [2021-11-23 13:47:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:09,310 INFO L470 AbstractCegarLoop]: Abstraction has 2186 states and 4357 transitions. [2021-11-23 13:47:09,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:47:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 4357 transitions. [2021-11-23 13:47:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 13:47:09,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:09,327 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:09,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:47:09,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:47:09,553 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:09,554 INFO L85 PathProgramCache]: Analyzing trace with hash -577290447, now seen corresponding path program 1 times [2021-11-23 13:47:09,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:09,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104437830] [2021-11-23 13:47:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:09,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-23 13:47:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:09,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:09,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:47:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:47:09,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:09,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104437830] [2021-11-23 13:47:09,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104437830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:47:09,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496107680] [2021-11-23 13:47:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:09,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:47:09,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:47:09,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:47:09,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:47:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:09,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 13:47:09,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:47:10,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 13:47:10,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:47:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:47:10,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:47:10,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-23 13:47:10,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-23 13:47:10,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-23 13:47:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:47:10,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496107680] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:47:10,575 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:47:10,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2021-11-23 13:47:10,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892720168] [2021-11-23 13:47:10,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:47:10,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 13:47:10,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:10,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 13:47:10,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:47:10,578 INFO L87 Difference]: Start difference. First operand 2186 states and 4357 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 16 states have internal predecessors, (84), 5 states have call successors, (16), 8 states have call predecessors, (16), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-23 13:47:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:13,781 INFO L93 Difference]: Finished difference Result 6193 states and 16647 transitions. [2021-11-23 13:47:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 13:47:13,783 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 16 states have internal predecessors, (84), 5 states have call successors, (16), 8 states have call predecessors, (16), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 65 [2021-11-23 13:47:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:13,840 INFO L225 Difference]: With dead ends: 6193 [2021-11-23 13:47:13,840 INFO L226 Difference]: Without dead ends: 4015 [2021-11-23 13:47:13,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=335, Invalid=925, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 13:47:13,868 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 349 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:13,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 1616 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 13:47:13,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4015 states. [2021-11-23 13:47:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4015 to 3864. [2021-11-23 13:47:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3864 states, 3022 states have (on average 1.1151555261416282) internal successors, (3370), 2964 states have internal predecessors, (3370), 191 states have call successors, (191), 107 states have call predecessors, (191), 650 states have return successors, (6067), 792 states have call predecessors, (6067), 182 states have call successors, (6067) [2021-11-23 13:47:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 9628 transitions. [2021-11-23 13:47:14,430 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 9628 transitions. Word has length 65 [2021-11-23 13:47:14,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:14,430 INFO L470 AbstractCegarLoop]: Abstraction has 3864 states and 9628 transitions. [2021-11-23 13:47:14,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 16 states have internal predecessors, (84), 5 states have call successors, (16), 8 states have call predecessors, (16), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-23 13:47:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 9628 transitions. [2021-11-23 13:47:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-23 13:47:14,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:14,467 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:14,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:47:14,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-23 13:47:14,689 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:14,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2085948204, now seen corresponding path program 1 times [2021-11-23 13:47:14,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:14,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366806369] [2021-11-23 13:47:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:14,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-23 13:47:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-23 13:47:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 13:47:14,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:14,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366806369] [2021-11-23 13:47:14,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366806369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:14,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:14,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:47:14,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366178862] [2021-11-23 13:47:14,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:14,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:47:14,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:47:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:47:14,838 INFO L87 Difference]: Start difference. First operand 3864 states and 9628 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 13:47:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:15,773 INFO L93 Difference]: Finished difference Result 7774 states and 25102 transitions. [2021-11-23 13:47:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:47:15,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2021-11-23 13:47:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:15,834 INFO L225 Difference]: With dead ends: 7774 [2021-11-23 13:47:15,835 INFO L226 Difference]: Without dead ends: 3956 [2021-11-23 13:47:15,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:47:15,876 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 75 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:15,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 317 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 13:47:15,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2021-11-23 13:47:16,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3884. [2021-11-23 13:47:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3037 states have (on average 1.1096476786302272) internal successors, (3370), 2979 states have internal predecessors, (3370), 191 states have call successors, (191), 107 states have call predecessors, (191), 655 states have return successors, (6147), 797 states have call predecessors, (6147), 182 states have call successors, (6147) [2021-11-23 13:47:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 9708 transitions. [2021-11-23 13:47:16,515 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 9708 transitions. Word has length 68 [2021-11-23 13:47:16,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:16,516 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 9708 transitions. [2021-11-23 13:47:16,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 13:47:16,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 9708 transitions. [2021-11-23 13:47:16,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 13:47:16,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:16,550 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:16,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 13:47:16,550 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:16,551 INFO L85 PathProgramCache]: Analyzing trace with hash -524595121, now seen corresponding path program 1 times [2021-11-23 13:47:16,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:16,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948978139] [2021-11-23 13:47:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:16,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-23 13:47:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-23 13:47:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 13:47:16,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:16,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948978139] [2021-11-23 13:47:16,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948978139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:16,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:16,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:47:16,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391106481] [2021-11-23 13:47:16,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:16,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:47:16,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:16,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:47:16,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:47:16,767 INFO L87 Difference]: Start difference. First operand 3884 states and 9708 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:47:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:18,529 INFO L93 Difference]: Finished difference Result 7651 states and 23875 transitions. [2021-11-23 13:47:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:47:18,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2021-11-23 13:47:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:18,572 INFO L225 Difference]: With dead ends: 7651 [2021-11-23 13:47:18,572 INFO L226 Difference]: Without dead ends: 3775 [2021-11-23 13:47:18,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:47:18,611 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 162 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:18,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 871 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 13:47:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-11-23 13:47:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3726. [2021-11-23 13:47:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3726 states, 2912 states have (on average 1.1006181318681318) internal successors, (3205), 2844 states have internal predecessors, (3205), 168 states have call successors, (168), 92 states have call predecessors, (168), 645 states have return successors, (5607), 789 states have call predecessors, (5607), 166 states have call successors, (5607) [2021-11-23 13:47:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 8980 transitions. [2021-11-23 13:47:19,122 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 8980 transitions. Word has length 69 [2021-11-23 13:47:19,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:19,122 INFO L470 AbstractCegarLoop]: Abstraction has 3726 states and 8980 transitions. [2021-11-23 13:47:19,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:47:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 8980 transitions. [2021-11-23 13:47:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 13:47:19,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:19,137 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:19,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 13:47:19,137 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:19,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1785512371, now seen corresponding path program 1 times [2021-11-23 13:47:19,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:19,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617766855] [2021-11-23 13:47:19,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:19,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-11-23 13:47:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:20,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-23 13:47:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:20,036 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 13:47:20,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:20,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617766855] [2021-11-23 13:47:20,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617766855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:20,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:20,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 13:47:20,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750218194] [2021-11-23 13:47:20,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:20,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:47:20,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:20,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:47:20,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:47:20,039 INFO L87 Difference]: Start difference. First operand 3726 states and 8980 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:47:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:21,630 INFO L93 Difference]: Finished difference Result 7452 states and 18016 transitions. [2021-11-23 13:47:21,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:47:21,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2021-11-23 13:47:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:21,685 INFO L225 Difference]: With dead ends: 7452 [2021-11-23 13:47:21,686 INFO L226 Difference]: Without dead ends: 3737 [2021-11-23 13:47:21,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:47:21,717 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 81 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:21,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 725 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 13:47:21,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-11-23 13:47:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3732. [2021-11-23 13:47:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3732 states, 2917 states have (on average 1.1004456633527597) internal successors, (3210), 2849 states have internal predecessors, (3210), 169 states have call successors, (169), 93 states have call predecessors, (169), 645 states have return successors, (5607), 789 states have call predecessors, (5607), 166 states have call successors, (5607) [2021-11-23 13:47:22,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3732 states to 3732 states and 8986 transitions. [2021-11-23 13:47:22,297 INFO L78 Accepts]: Start accepts. Automaton has 3732 states and 8986 transitions. Word has length 69 [2021-11-23 13:47:22,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:22,298 INFO L470 AbstractCegarLoop]: Abstraction has 3732 states and 8986 transitions. [2021-11-23 13:47:22,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:47:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3732 states and 8986 transitions. [2021-11-23 13:47:22,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-23 13:47:22,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:22,307 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2021-11-23 13:47:22,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 13:47:22,308 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:22,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:22,308 INFO L85 PathProgramCache]: Analyzing trace with hash -728449628, now seen corresponding path program 1 times [2021-11-23 13:47:22,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:22,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686727958] [2021-11-23 13:47:22,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:22,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-23 13:47:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:22,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:47:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-23 13:47:22,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:22,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686727958] [2021-11-23 13:47:22,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686727958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:22,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:22,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 13:47:22,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245361963] [2021-11-23 13:47:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:22,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:47:22,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:22,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:47:22,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:47:22,546 INFO L87 Difference]: Start difference. First operand 3732 states and 8986 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 13:47:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:23,915 INFO L93 Difference]: Finished difference Result 7457 states and 23077 transitions. [2021-11-23 13:47:23,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:47:23,916 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2021-11-23 13:47:23,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:23,967 INFO L225 Difference]: With dead ends: 7457 [2021-11-23 13:47:23,967 INFO L226 Difference]: Without dead ends: 3742 [2021-11-23 13:47:24,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:47:24,094 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 84 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:24,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 1462 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:47:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-11-23 13:47:24,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3737. [2021-11-23 13:47:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3737 states, 2921 states have (on average 1.1003081136597055) internal successors, (3214), 2852 states have internal predecessors, (3214), 169 states have call successors, (169), 93 states have call predecessors, (169), 646 states have return successors, (5610), 791 states have call predecessors, (5610), 166 states have call successors, (5610) [2021-11-23 13:47:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 8993 transitions. [2021-11-23 13:47:24,456 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 8993 transitions. Word has length 84 [2021-11-23 13:47:24,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:24,457 INFO L470 AbstractCegarLoop]: Abstraction has 3737 states and 8993 transitions. [2021-11-23 13:47:24,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 8 states have internal predecessors, (56), 2 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 13:47:24,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 8993 transitions. [2021-11-23 13:47:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 13:47:24,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:24,466 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2021-11-23 13:47:24,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 13:47:24,467 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:24,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1145632899, now seen corresponding path program 1 times [2021-11-23 13:47:24,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:24,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752851145] [2021-11-23 13:47:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:24,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:24,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:47:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-23 13:47:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:24,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:47:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-23 13:47:24,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752851145] [2021-11-23 13:47:24,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752851145] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:24,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:24,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-23 13:47:24,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756718333] [2021-11-23 13:47:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:24,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:47:24,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:24,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:47:24,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:47:24,714 INFO L87 Difference]: Start difference. First operand 3737 states and 8993 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 13:47:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:26,141 INFO L93 Difference]: Finished difference Result 7464 states and 23086 transitions. [2021-11-23 13:47:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:47:26,142 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 92 [2021-11-23 13:47:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:26,190 INFO L225 Difference]: With dead ends: 7464 [2021-11-23 13:47:26,190 INFO L226 Difference]: Without dead ends: 3744 [2021-11-23 13:47:26,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:47:26,319 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 85 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:26,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 1412 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:47:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2021-11-23 13:47:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3739. [2021-11-23 13:47:26,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3739 states, 2923 states have (on average 1.1002394799863153) internal successors, (3216), 2853 states have internal predecessors, (3216), 169 states have call successors, (169), 93 states have call predecessors, (169), 646 states have return successors, (5610), 792 states have call predecessors, (5610), 166 states have call successors, (5610) [2021-11-23 13:47:26,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3739 states to 3739 states and 8995 transitions. [2021-11-23 13:47:26,748 INFO L78 Accepts]: Start accepts. Automaton has 3739 states and 8995 transitions. Word has length 92 [2021-11-23 13:47:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:26,748 INFO L470 AbstractCegarLoop]: Abstraction has 3739 states and 8995 transitions. [2021-11-23 13:47:26,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 13:47:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3739 states and 8995 transitions. [2021-11-23 13:47:26,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 13:47:26,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:26,762 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2021-11-23 13:47:26,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 13:47:26,762 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:26,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1963636139, now seen corresponding path program 1 times [2021-11-23 13:47:26,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:26,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461741188] [2021-11-23 13:47:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:26,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-23 13:47:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:26,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:27,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:47:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 13:47:27,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:27,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461741188] [2021-11-23 13:47:27,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461741188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:27,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:27,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 13:47:27,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323237569] [2021-11-23 13:47:27,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:27,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:47:27,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:27,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:47:27,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:47:27,081 INFO L87 Difference]: Start difference. First operand 3739 states and 8995 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 13:47:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:28,534 INFO L93 Difference]: Finished difference Result 7588 states and 23349 transitions. [2021-11-23 13:47:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:47:28,534 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 87 [2021-11-23 13:47:28,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:28,586 INFO L225 Difference]: With dead ends: 7588 [2021-11-23 13:47:28,586 INFO L226 Difference]: Without dead ends: 3866 [2021-11-23 13:47:28,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:47:28,621 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 80 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:28,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 1316 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:47:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-11-23 13:47:28,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3777. [2021-11-23 13:47:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3777 states, 2953 states have (on average 1.0992211310531663) internal successors, (3246), 2880 states have internal predecessors, (3246), 169 states have call successors, (169), 93 states have call predecessors, (169), 654 states have return successors, (5689), 803 states have call predecessors, (5689), 166 states have call successors, (5689) [2021-11-23 13:47:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3777 states to 3777 states and 9104 transitions. [2021-11-23 13:47:29,054 INFO L78 Accepts]: Start accepts. Automaton has 3777 states and 9104 transitions. Word has length 87 [2021-11-23 13:47:29,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:29,054 INFO L470 AbstractCegarLoop]: Abstraction has 3777 states and 9104 transitions. [2021-11-23 13:47:29,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 7 states have internal predecessors, (59), 2 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 13:47:29,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3777 states and 9104 transitions. [2021-11-23 13:47:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 13:47:29,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:29,070 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:29,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 13:47:29,071 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1118992151, now seen corresponding path program 1 times [2021-11-23 13:47:29,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:29,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418372172] [2021-11-23 13:47:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:29,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:29,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:47:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:29,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:47:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:47:29,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:29,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418372172] [2021-11-23 13:47:29,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418372172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:29,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:29,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 13:47:29,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849468661] [2021-11-23 13:47:29,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:29,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:47:29,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:47:29,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:47:29,302 INFO L87 Difference]: Start difference. First operand 3777 states and 9104 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 13:47:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:30,796 INFO L93 Difference]: Finished difference Result 7628 states and 23460 transitions. [2021-11-23 13:47:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:47:30,796 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 72 [2021-11-23 13:47:30,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:30,862 INFO L225 Difference]: With dead ends: 7628 [2021-11-23 13:47:30,862 INFO L226 Difference]: Without dead ends: 3868 [2021-11-23 13:47:30,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:47:30,920 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 80 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:30,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 1316 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:47:30,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2021-11-23 13:47:31,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3775. [2021-11-23 13:47:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 2952 states have (on average 1.0992547425474255) internal successors, (3245), 2878 states have internal predecessors, (3245), 169 states have call successors, (169), 93 states have call predecessors, (169), 653 states have return successors, (5686), 803 states have call predecessors, (5686), 166 states have call successors, (5686) [2021-11-23 13:47:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 9100 transitions. [2021-11-23 13:47:31,427 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 9100 transitions. Word has length 72 [2021-11-23 13:47:31,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:31,427 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 9100 transitions. [2021-11-23 13:47:31,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 13:47:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 9100 transitions. [2021-11-23 13:47:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-23 13:47:31,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:31,459 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:31,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-23 13:47:31,459 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:31,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:31,460 INFO L85 PathProgramCache]: Analyzing trace with hash -950596989, now seen corresponding path program 1 times [2021-11-23 13:47:31,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:31,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568979964] [2021-11-23 13:47:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:31,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-23 13:47:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-23 13:47:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 13:47:31,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:31,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568979964] [2021-11-23 13:47:31,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568979964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:31,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:31,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:47:31,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973093529] [2021-11-23 13:47:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:31,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:47:31,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:31,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:47:31,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:47:31,689 INFO L87 Difference]: Start difference. First operand 3775 states and 9100 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 4 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:47:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:33,321 INFO L93 Difference]: Finished difference Result 7555 states and 23415 transitions. [2021-11-23 13:47:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:47:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 4 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2021-11-23 13:47:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:33,372 INFO L225 Difference]: With dead ends: 7555 [2021-11-23 13:47:33,372 INFO L226 Difference]: Without dead ends: 3797 [2021-11-23 13:47:33,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:47:33,404 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 107 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:33,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 804 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 13:47:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2021-11-23 13:47:33,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3788. [2021-11-23 13:47:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 2962 states have (on average 1.0992572586090479) internal successors, (3256), 2889 states have internal predecessors, (3256), 170 states have call successors, (170), 94 states have call predecessors, (170), 655 states have return successors, (5727), 804 states have call predecessors, (5727), 167 states have call successors, (5727) [2021-11-23 13:47:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 9153 transitions. [2021-11-23 13:47:33,802 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 9153 transitions. Word has length 85 [2021-11-23 13:47:33,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:33,802 INFO L470 AbstractCegarLoop]: Abstraction has 3788 states and 9153 transitions. [2021-11-23 13:47:33,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 4 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:47:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 9153 transitions. [2021-11-23 13:47:33,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-23 13:47:33,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:33,832 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 3, 3, 3, 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] [2021-11-23 13:47:33,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-23 13:47:33,832 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:33,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:33,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1462914801, now seen corresponding path program 1 times [2021-11-23 13:47:33,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:33,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319960477] [2021-11-23 13:47:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:33,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:33,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:47:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:33,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-23 13:47:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:47:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:34,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-23 13:47:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:34,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:47:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:47:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-23 13:47:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:34,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:47:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 13:47:34,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:34,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319960477] [2021-11-23 13:47:34,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319960477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:34,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:34,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-23 13:47:34,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591734051] [2021-11-23 13:47:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:34,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 13:47:34,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 13:47:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-11-23 13:47:34,434 INFO L87 Difference]: Start difference. First operand 3788 states and 9153 transitions. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 10 states have internal predecessors, (85), 2 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-23 13:47:36,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:36,205 INFO L93 Difference]: Finished difference Result 7888 states and 24273 transitions. [2021-11-23 13:47:36,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 13:47:36,206 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 10 states have internal predecessors, (85), 2 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) Word has length 144 [2021-11-23 13:47:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:36,258 INFO L225 Difference]: With dead ends: 7888 [2021-11-23 13:47:36,258 INFO L226 Difference]: Without dead ends: 4117 [2021-11-23 13:47:36,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-11-23 13:47:36,293 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 94 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:36,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 2327 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 13:47:36,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4117 states. [2021-11-23 13:47:36,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4117 to 4048. [2021-11-23 13:47:36,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 3158 states have (on average 1.0930968967701076) internal successors, (3452), 3089 states have internal predecessors, (3452), 170 states have call successors, (170), 94 states have call predecessors, (170), 719 states have return successors, (6260), 864 states have call predecessors, (6260), 167 states have call successors, (6260) [2021-11-23 13:47:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 9882 transitions. [2021-11-23 13:47:36,598 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 9882 transitions. Word has length 144 [2021-11-23 13:47:36,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:36,599 INFO L470 AbstractCegarLoop]: Abstraction has 4048 states and 9882 transitions. [2021-11-23 13:47:36,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 10 states have internal predecessors, (85), 2 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (8), 8 states have call predecessors, (8), 1 states have call successors, (8) [2021-11-23 13:47:36,599 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 9882 transitions. [2021-11-23 13:47:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 13:47:36,623 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:36,623 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 13:47:36,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-23 13:47:36,624 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1322384271, now seen corresponding path program 1 times [2021-11-23 13:47:36,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:36,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291957251] [2021-11-23 13:47:36,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:36,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:36,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:47:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:36,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:47:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-23 13:47:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:36,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:47:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:36,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:47:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:36,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-23 13:47:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:47:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 13:47:36,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:36,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291957251] [2021-11-23 13:47:36,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291957251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:47:36,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:47:36,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 13:47:36,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823108151] [2021-11-23 13:47:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:47:36,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:47:36,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:36,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:47:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:47:36,974 INFO L87 Difference]: Start difference. First operand 4048 states and 9882 transitions. Second operand has 9 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 13:47:38,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:47:38,381 INFO L93 Difference]: Finished difference Result 8041 states and 24870 transitions. [2021-11-23 13:47:38,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:47:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 119 [2021-11-23 13:47:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:47:38,419 INFO L225 Difference]: With dead ends: 8041 [2021-11-23 13:47:38,419 INFO L226 Difference]: Without dead ends: 4001 [2021-11-23 13:47:38,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:47:38,450 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 108 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:47:38,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 635 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:47:38,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2021-11-23 13:47:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3989. [2021-11-23 13:47:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3989 states, 3113 states have (on average 1.0941214262769032) internal successors, (3406), 3043 states have internal predecessors, (3406), 170 states have call successors, (170), 94 states have call predecessors, (170), 705 states have return successors, (6144), 851 states have call predecessors, (6144), 167 states have call successors, (6144) [2021-11-23 13:47:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 9720 transitions. [2021-11-23 13:47:38,733 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 9720 transitions. Word has length 119 [2021-11-23 13:47:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:47:38,734 INFO L470 AbstractCegarLoop]: Abstraction has 3989 states and 9720 transitions. [2021-11-23 13:47:38,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 13:47:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 9720 transitions. [2021-11-23 13:47:38,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-23 13:47:38,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:47:38,763 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:47:38,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-23 13:47:38,764 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:47:38,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:47:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash -139672395, now seen corresponding path program 1 times [2021-11-23 13:47:38,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:47:38,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886045055] [2021-11-23 13:47:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:38,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:47:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:47:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:38,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-11-23 13:47:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:38,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:38,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-23 13:47:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:47:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:39,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:47:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:39,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-23 13:47:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:39,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:47:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:39,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:47:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-23 13:47:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:39,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:47:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:39,133 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 104 proven. 37 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-23 13:47:39,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:47:39,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886045055] [2021-11-23 13:47:39,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886045055] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:47:39,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046645641] [2021-11-23 13:47:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:47:39,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:47:39,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:47:39,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:47:39,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:47:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:47:39,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 13:47:39,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:47:39,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 13:47:41,160 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ASStop_#Ultimate.C_memset_#value#1| Int) (|ASStop_#Ultimate.C_memset_#ptr#1.offset| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| c_~user~0.base (store (select |c_old(#memory_int)| c_~user~0.base) (+ |ASStop_#Ultimate.C_memset_#ptr#1.offset| |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6|) |ASStop_#Ultimate.C_memset_#value#1|))) (<= (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#ptr#1.offset|) (<= 0 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_6|))) is different from true [2021-11-23 13:47:41,394 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-23 13:47:41,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-11-23 13:47:41,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:47:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 82 proven. 6 refuted. 0 times theorem prover too weak. 152 trivial. 3 not checked. [2021-11-23 13:47:41,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:47:42,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-23 13:47:42,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 13:47:42,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-23 13:47:42,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 13:47:43,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-23 13:47:43,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 13:47:43,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-23 13:47:43,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 13:47:44,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-23 13:47:44,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 13:47:44,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-23 13:47:44,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 13:47:44,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-23 13:47:44,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 13:47:45,165 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ASStop_#Ultimate.C_memset_#value#1_110| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138| Int) (|v_ASStop_#Ultimate.C_memset_#ptr#1.offset_111| Int)) (or (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138| 0) (< |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_111| (+ c_~user~0.offset 16)) (not (= ~sys_state_s~0~AS_IDLE (select (store (select |c_#memory_int| c_~user~0.base) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_138| |v_ASStop_#Ultimate.C_memset_#ptr#1.offset_111|) |v_ASStop_#Ultimate.C_memset_#value#1_110|) c_~user~0.offset))))) is different from false [2021-11-23 13:47:45,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046645641] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:47:45,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:47:45,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2021-11-23 13:47:45,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685989701] [2021-11-23 13:47:45,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 13:47:45,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 13:47:45,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:47:45,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 13:47:45,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=301, Unknown=2, NotChecked=70, Total=420 [2021-11-23 13:47:45,169 INFO L87 Difference]: Start difference. First operand 3989 states and 9720 transitions. Second operand has 18 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-23 13:48:00,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:48:00,767 INFO L93 Difference]: Finished difference Result 9119 states and 29110 transitions. [2021-11-23 13:48:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 13:48:00,768 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 184 [2021-11-23 13:48:00,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:48:00,936 INFO L225 Difference]: With dead ends: 9119 [2021-11-23 13:48:00,937 INFO L226 Difference]: Without dead ends: 5138 [2021-11-23 13:48:00,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=257, Invalid=1458, Unknown=15, NotChecked=162, Total=1892 [2021-11-23 13:48:00,965 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 315 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:48:00,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 1422 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1226 Invalid, 0 Unknown, 286 Unchecked, 1.6s Time] [2021-11-23 13:48:00,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5138 states. [2021-11-23 13:48:01,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5138 to 4827. [2021-11-23 13:48:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 3758 states have (on average 1.0782331027142096) internal successors, (4052), 3731 states have internal predecessors, (4052), 180 states have call successors, (180), 97 states have call predecessors, (180), 888 states have return successors, (8465), 998 states have call predecessors, (8465), 177 states have call successors, (8465) [2021-11-23 13:48:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 12697 transitions. [2021-11-23 13:48:01,343 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 12697 transitions. Word has length 184 [2021-11-23 13:48:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:48:01,344 INFO L470 AbstractCegarLoop]: Abstraction has 4827 states and 12697 transitions. [2021-11-23 13:48:01,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 8.882352941176471) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-23 13:48:01,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 12697 transitions. [2021-11-23 13:48:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-23 13:48:01,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:48:01,361 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:48:01,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-23 13:48:01,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:48:01,577 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:48:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:48:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1619348222, now seen corresponding path program 1 times [2021-11-23 13:48:01,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:48:01,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827761240] [2021-11-23 13:48:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:48:01,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:48:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-23 13:48:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-23 13:48:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:48:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:48:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-23 13:48:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:48:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:48:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-23 13:48:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:48:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 79 proven. 12 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-11-23 13:48:01,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:48:01,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827761240] [2021-11-23 13:48:01,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827761240] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:48:01,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958169460] [2021-11-23 13:48:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:48:01,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:48:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:48:01,867 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:48:01,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 13:48:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:48:02,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 13:48:02,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:48:02,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 13:48:12,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:48:12,284 INFO L354 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2021-11-23 13:48:12,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-23 13:48:14,061 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-23 13:48:14,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 13 [2021-11-23 13:48:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 50 proven. 34 refuted. 2 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-23 13:48:14,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:48:14,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 13:48:14,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2021-11-23 13:48:15,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 13:48:15,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2021-11-23 13:48:15,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 13:48:15,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2021-11-23 13:48:15,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 13:48:15,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2021-11-23 13:48:16,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 13:48:16,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2021-11-23 13:48:16,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 13:48:16,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 68 [2021-11-23 13:48:16,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 13:48:16,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 70 [2021-11-23 13:48:19,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-23 13:48:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 76 proven. 7 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-23 13:48:19,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958169460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:48:19,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:48:19,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 10] total 28 [2021-11-23 13:48:19,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657713160] [2021-11-23 13:48:19,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:48:19,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-23 13:48:19,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:48:19,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-23 13:48:19,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=657, Unknown=10, NotChecked=0, Total=756 [2021-11-23 13:48:19,440 INFO L87 Difference]: Start difference. First operand 4827 states and 12697 transitions. Second operand has 28 states, 26 states have (on average 8.615384615384615) internal successors, (224), 25 states have internal predecessors, (224), 8 states have call successors, (42), 10 states have call predecessors, (42), 6 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-23 13:49:40,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:40,535 INFO L93 Difference]: Finished difference Result 15000 states and 63342 transitions. [2021-11-23 13:49:40,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-23 13:49:40,536 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 8.615384615384615) internal successors, (224), 25 states have internal predecessors, (224), 8 states have call successors, (42), 10 states have call predecessors, (42), 6 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 175 [2021-11-23 13:49:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:40,767 INFO L225 Difference]: With dead ends: 15000 [2021-11-23 13:49:40,767 INFO L226 Difference]: Without dead ends: 10190 [2021-11-23 13:49:40,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 363 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1948 ImplicationChecksByTransitivity, 88.4s TimeCoverageRelationStatistics Valid=1293, Invalid=5786, Unknown=61, NotChecked=0, Total=7140 [2021-11-23 13:49:40,855 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 803 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 2876 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 2876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1240 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:40,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 3110 Invalid, 4724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 2876 Invalid, 0 Unknown, 1240 Unchecked, 5.2s Time] [2021-11-23 13:49:40,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10190 states. [2021-11-23 13:49:42,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10190 to 8028. [2021-11-23 13:49:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8028 states, 6280 states have (on average 1.0614649681528663) internal successors, (6666), 6161 states have internal predecessors, (6666), 209 states have call successors, (209), 128 states have call predecessors, (209), 1538 states have return successors, (16511), 1738 states have call predecessors, (16511), 206 states have call successors, (16511) [2021-11-23 13:49:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8028 states to 8028 states and 23386 transitions. [2021-11-23 13:49:42,324 INFO L78 Accepts]: Start accepts. Automaton has 8028 states and 23386 transitions. Word has length 175 [2021-11-23 13:49:42,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:42,325 INFO L470 AbstractCegarLoop]: Abstraction has 8028 states and 23386 transitions. [2021-11-23 13:49:42,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 8.615384615384615) internal successors, (224), 25 states have internal predecessors, (224), 8 states have call successors, (42), 10 states have call predecessors, (42), 6 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-23 13:49:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8028 states and 23386 transitions. [2021-11-23 13:49:42,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-23 13:49:42,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:42,347 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:42,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:42,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:42,547 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:49:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1503249722, now seen corresponding path program 1 times [2021-11-23 13:49:42,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:42,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924249201] [2021-11-23 13:49:42,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:42,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-23 13:49:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:42,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-23 13:49:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:42,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:42,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:49:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-23 13:49:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:43,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:49:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:49:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:43,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-23 13:49:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:43,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:49:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-23 13:49:43,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:43,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924249201] [2021-11-23 13:49:43,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924249201] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:49:43,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141088519] [2021-11-23 13:49:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:43,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:43,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:43,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 13:49:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:43,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:49:43,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:43,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-11-23 13:49:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 147 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-23 13:49:44,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:49:44,602 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-23 13:49:44,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141088519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:49:44,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:49:44,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 7] total 24 [2021-11-23 13:49:44,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571876685] [2021-11-23 13:49:44,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:49:44,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 13:49:44,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:44,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 13:49:44,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=504, Unknown=0, NotChecked=0, Total=552 [2021-11-23 13:49:44,606 INFO L87 Difference]: Start difference. First operand 8028 states and 23386 transitions. Second operand has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 16 states have internal predecessors, (164), 3 states have call successors, (30), 4 states have call predecessors, (30), 8 states have return successors, (24), 10 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 13:49:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:48,532 INFO L93 Difference]: Finished difference Result 17424 states and 63774 transitions. [2021-11-23 13:49:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-23 13:49:48,532 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 16 states have internal predecessors, (164), 3 states have call successors, (30), 4 states have call predecessors, (30), 8 states have return successors, (24), 10 states have call predecessors, (24), 2 states have call successors, (24) Word has length 174 [2021-11-23 13:49:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:48,667 INFO L225 Difference]: With dead ends: 17424 [2021-11-23 13:49:48,667 INFO L226 Difference]: Without dead ends: 9413 [2021-11-23 13:49:48,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=334, Invalid=2972, Unknown=0, NotChecked=0, Total=3306 [2021-11-23 13:49:48,757 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 338 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 2063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:48,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 3302 Invalid, 2063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 13:49:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9413 states. [2021-11-23 13:49:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9413 to 9227. [2021-11-23 13:49:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9227 states, 7230 states have (on average 1.0521438450899032) internal successors, (7607), 7094 states have internal predecessors, (7607), 229 states have call successors, (229), 143 states have call predecessors, (229), 1767 states have return successors, (16793), 1989 states have call predecessors, (16793), 226 states have call successors, (16793) [2021-11-23 13:49:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9227 states to 9227 states and 24629 transitions. [2021-11-23 13:49:49,964 INFO L78 Accepts]: Start accepts. Automaton has 9227 states and 24629 transitions. Word has length 174 [2021-11-23 13:49:49,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:49,965 INFO L470 AbstractCegarLoop]: Abstraction has 9227 states and 24629 transitions. [2021-11-23 13:49:49,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 16 states have internal predecessors, (164), 3 states have call successors, (30), 4 states have call predecessors, (30), 8 states have return successors, (24), 10 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-23 13:49:49,965 INFO L276 IsEmpty]: Start isEmpty. Operand 9227 states and 24629 transitions. [2021-11-23 13:49:49,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 13:49:49,987 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:49,988 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:50,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:50,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:50,189 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:49:50,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash -126188248, now seen corresponding path program 1 times [2021-11-23 13:49:50,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:50,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837646475] [2021-11-23 13:49:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:50,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:49:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:50,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:50,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:50,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:50,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:49:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-23 13:49:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:49:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-23 13:49:50,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:50,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837646475] [2021-11-23 13:49:50,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837646475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:50,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:50,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-23 13:49:50,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97897248] [2021-11-23 13:49:50,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:50,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:49:50,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:50,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:49:50,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:49:50,612 INFO L87 Difference]: Start difference. First operand 9227 states and 24629 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (7), 6 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-23 13:49:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:52,523 INFO L93 Difference]: Finished difference Result 18477 states and 64031 transitions. [2021-11-23 13:49:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 13:49:52,524 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (7), 6 states have call predecessors, (7), 1 states have call successors, (7) Word has length 108 [2021-11-23 13:49:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:52,872 INFO L225 Difference]: With dead ends: 18477 [2021-11-23 13:49:52,872 INFO L226 Difference]: Without dead ends: 9267 [2021-11-23 13:49:52,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2021-11-23 13:49:52,947 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 89 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:52,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1956 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 13:49:52,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9267 states. [2021-11-23 13:49:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9267 to 9244. [2021-11-23 13:49:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 7243 states have (on average 1.0520502554190252) internal successors, (7620), 7107 states have internal predecessors, (7620), 229 states have call successors, (229), 143 states have call predecessors, (229), 1771 states have return successors, (16821), 1993 states have call predecessors, (16821), 226 states have call successors, (16821) [2021-11-23 13:49:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 24670 transitions. [2021-11-23 13:49:54,020 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 24670 transitions. Word has length 108 [2021-11-23 13:49:54,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:54,020 INFO L470 AbstractCegarLoop]: Abstraction has 9244 states and 24670 transitions. [2021-11-23 13:49:54,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 9 states have internal predecessors, (67), 2 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (7), 6 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-23 13:49:54,021 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 24670 transitions. [2021-11-23 13:49:54,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-23 13:49:54,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:54,044 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 6, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:54,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-23 13:49:54,044 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:49:54,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:54,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1411494746, now seen corresponding path program 1 times [2021-11-23 13:49:54,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:54,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977663941] [2021-11-23 13:49:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:54,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:54,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-23 13:49:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:54,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:49:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-23 13:49:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:54,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:49:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 65 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-23 13:49:54,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:54,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977663941] [2021-11-23 13:49:54,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977663941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:49:54,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859368028] [2021-11-23 13:49:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:54,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:54,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:49:54,509 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:49:54,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 13:49:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:54,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:49:54,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:49:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-23 13:49:55,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:49:55,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859368028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:55,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:49:55,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2021-11-23 13:49:55,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204455940] [2021-11-23 13:49:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:55,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:49:55,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:49:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:49:55,089 INFO L87 Difference]: Start difference. First operand 9244 states and 24670 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 13:49:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:55,839 INFO L93 Difference]: Finished difference Result 18532 states and 64343 transitions. [2021-11-23 13:49:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:49:55,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 137 [2021-11-23 13:49:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:55,957 INFO L225 Difference]: With dead ends: 18532 [2021-11-23 13:49:55,957 INFO L226 Difference]: Without dead ends: 9305 [2021-11-23 13:49:56,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:49:56,142 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 25 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:56,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1044 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:49:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9305 states. [2021-11-23 13:49:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9305 to 9254. [2021-11-23 13:49:57,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9254 states, 7251 states have (on average 1.051992828575369) internal successors, (7628), 7113 states have internal predecessors, (7628), 229 states have call successors, (229), 143 states have call predecessors, (229), 1773 states have return successors, (16827), 1997 states have call predecessors, (16827), 226 states have call successors, (16827) [2021-11-23 13:49:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9254 states to 9254 states and 24684 transitions. [2021-11-23 13:49:57,101 INFO L78 Accepts]: Start accepts. Automaton has 9254 states and 24684 transitions. Word has length 137 [2021-11-23 13:49:57,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:49:57,101 INFO L470 AbstractCegarLoop]: Abstraction has 9254 states and 24684 transitions. [2021-11-23 13:49:57,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 13:49:57,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9254 states and 24684 transitions. [2021-11-23 13:49:57,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 13:49:57,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:49:57,123 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:49:57,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:49:57,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:49:57,325 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:49:57,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:49:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1650031913, now seen corresponding path program 1 times [2021-11-23 13:49:57,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:49:57,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597325485] [2021-11-23 13:49:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:49:57,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:49:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:57,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:49:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-23 13:49:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:49:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:57,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:49:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:57,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-23 13:49:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:49:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:49:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-23 13:49:57,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:49:57,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597325485] [2021-11-23 13:49:57,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597325485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:49:57,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:49:57,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 13:49:57,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460819538] [2021-11-23 13:49:57,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:49:57,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:49:57,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:49:57,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:49:57,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:49:57,634 INFO L87 Difference]: Start difference. First operand 9254 states and 24684 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-23 13:49:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:49:59,571 INFO L93 Difference]: Finished difference Result 18536 states and 64189 transitions. [2021-11-23 13:49:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:49:59,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 123 [2021-11-23 13:49:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:49:59,782 INFO L225 Difference]: With dead ends: 18536 [2021-11-23 13:49:59,782 INFO L226 Difference]: Without dead ends: 9290 [2021-11-23 13:49:59,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:49:59,938 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 109 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:49:59,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 764 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:49:59,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9290 states. [2021-11-23 13:50:01,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9290 to 9012. [2021-11-23 13:50:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9012 states, 7069 states have (on average 1.0531899844391004) internal successors, (7445), 6929 states have internal predecessors, (7445), 227 states have call successors, (227), 142 states have call predecessors, (227), 1715 states have return successors, (16706), 1940 states have call predecessors, (16706), 224 states have call successors, (16706) [2021-11-23 13:50:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 24378 transitions. [2021-11-23 13:50:01,188 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 24378 transitions. Word has length 123 [2021-11-23 13:50:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:50:01,189 INFO L470 AbstractCegarLoop]: Abstraction has 9012 states and 24378 transitions. [2021-11-23 13:50:01,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-23 13:50:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 24378 transitions. [2021-11-23 13:50:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-23 13:50:01,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:50:01,211 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:50:01,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-23 13:50:01,212 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:50:01,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:50:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1137306439, now seen corresponding path program 1 times [2021-11-23 13:50:01,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:50:01,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769017149] [2021-11-23 13:50:01,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:50:01,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:50:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:50:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-23 13:50:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:50:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:50:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:50:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-23 13:50:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:50:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:50:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-23 13:50:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:50:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 74 proven. 57 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-23 13:50:01,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:50:01,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769017149] [2021-11-23 13:50:01,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769017149] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:50:01,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203051665] [2021-11-23 13:50:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:50:01,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:50:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:50:01,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:50:01,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 13:50:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:01,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:50:01,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:50:02,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 13:50:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-23 13:50:02,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:50:02,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203051665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:50:02,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:50:02,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-23 13:50:02,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124944800] [2021-11-23 13:50:02,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:50:02,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:50:02,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:50:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:50:02,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:50:02,295 INFO L87 Difference]: Start difference. First operand 9012 states and 24378 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 13:50:03,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:50:03,942 INFO L93 Difference]: Finished difference Result 16158 states and 57591 transitions. [2021-11-23 13:50:03,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:50:03,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 185 [2021-11-23 13:50:03,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:50:04,064 INFO L225 Difference]: With dead ends: 16158 [2021-11-23 13:50:04,064 INFO L226 Difference]: Without dead ends: 7163 [2021-11-23 13:50:04,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:50:04,171 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 87 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:50:04,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 805 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:50:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7163 states. [2021-11-23 13:50:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7163 to 6874. [2021-11-23 13:50:04,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6874 states, 5376 states have (on average 1.0598958333333333) internal successors, (5698), 5242 states have internal predecessors, (5698), 184 states have call successors, (184), 116 states have call predecessors, (184), 1313 states have return successors, (13043), 1515 states have call predecessors, (13043), 181 states have call successors, (13043) [2021-11-23 13:50:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6874 states to 6874 states and 18925 transitions. [2021-11-23 13:50:05,061 INFO L78 Accepts]: Start accepts. Automaton has 6874 states and 18925 transitions. Word has length 185 [2021-11-23 13:50:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:50:05,062 INFO L470 AbstractCegarLoop]: Abstraction has 6874 states and 18925 transitions. [2021-11-23 13:50:05,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-23 13:50:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 6874 states and 18925 transitions. [2021-11-23 13:50:05,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-23 13:50:05,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:50:05,084 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:50:05,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:50:05,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:50:05,309 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:50:05,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:50:05,310 INFO L85 PathProgramCache]: Analyzing trace with hash 210818848, now seen corresponding path program 1 times [2021-11-23 13:50:05,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:50:05,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810180232] [2021-11-23 13:50:05,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:50:05,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:50:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:50:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-23 13:50:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:50:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:50:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:50:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-23 13:50:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:50:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:50:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-23 13:50:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:50:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-23 13:50:05,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:50:05,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810180232] [2021-11-23 13:50:05,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810180232] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:50:05,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676006687] [2021-11-23 13:50:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:50:05,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:50:05,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:50:05,860 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:50:05,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 13:50:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:50:06,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 13:50:06,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:50:06,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 13:50:29,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:50:29,719 INFO L354 Elim1Store]: treesize reduction 289, result has 11.3 percent of original size [2021-11-23 13:50:29,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 63 [2021-11-23 13:50:34,132 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-23 13:50:34,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 29 [2021-11-23 13:50:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 29 proven. 28 refuted. 3 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-23 13:50:34,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:50:35,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2021-11-23 13:50:35,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 322 treesize of output 318 [2021-11-23 13:50:36,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2021-11-23 13:50:36,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 324 treesize of output 320 [2021-11-23 13:50:37,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2021-11-23 13:50:37,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 324 treesize of output 320 [2021-11-23 13:50:38,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2021-11-23 13:50:38,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 306 [2021-11-23 13:50:38,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2021-11-23 13:50:38,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 306 [2021-11-23 13:50:39,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2021-11-23 13:50:39,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 324 treesize of output 320 [2021-11-23 13:50:39,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2021-11-23 13:50:39,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 306 [2021-11-23 13:50:58,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-23 13:50:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 46 proven. 12 refuted. 2 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-23 13:50:58,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676006687] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:50:58,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:50:58,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 12] total 31 [2021-11-23 13:50:58,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472299852] [2021-11-23 13:50:58,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:50:58,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-23 13:50:58,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:50:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-23 13:50:58,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=797, Unknown=20, NotChecked=0, Total=930 [2021-11-23 13:50:58,887 INFO L87 Difference]: Start difference. First operand 6874 states and 18925 transitions. Second operand has 31 states, 29 states have (on average 7.551724137931035) internal successors, (219), 30 states have internal predecessors, (219), 9 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-23 13:51:57,523 WARN L227 SmtUtils]: Spent 30.63s on a formula simplification. DAG size of input: 61 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:52:36,796 WARN L227 SmtUtils]: Spent 32.85s on a formula simplification. DAG size of input: 74 DAG size of output: 68 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 13:54:05,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:05,601 INFO L93 Difference]: Finished difference Result 20906 states and 78685 transitions. [2021-11-23 13:54:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-23 13:54:05,602 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 7.551724137931035) internal successors, (219), 30 states have internal predecessors, (219), 9 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) Word has length 156 [2021-11-23 13:54:05,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:05,787 INFO L225 Difference]: With dead ends: 20906 [2021-11-23 13:54:05,787 INFO L226 Difference]: Without dead ends: 14049 [2021-11-23 13:54:05,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 16 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 225.0s TimeCoverageRelationStatistics Valid=694, Invalid=4219, Unknown=57, NotChecked=0, Total=4970 [2021-11-23 13:54:05,860 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 535 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2011 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 4308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2013 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:05,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 2571 Invalid, 4308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2011 Invalid, 0 Unknown, 2013 Unchecked, 3.9s Time] [2021-11-23 13:54:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14049 states. [2021-11-23 13:54:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14049 to 9408. [2021-11-23 13:54:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9408 states, 7357 states have (on average 1.0511077885007476) internal successors, (7733), 7148 states have internal predecessors, (7733), 208 states have call successors, (208), 119 states have call predecessors, (208), 1842 states have return successors, (23730), 2140 states have call predecessors, (23730), 205 states have call successors, (23730) [2021-11-23 13:54:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9408 states to 9408 states and 31671 transitions. [2021-11-23 13:54:07,560 INFO L78 Accepts]: Start accepts. Automaton has 9408 states and 31671 transitions. Word has length 156 [2021-11-23 13:54:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:07,561 INFO L470 AbstractCegarLoop]: Abstraction has 9408 states and 31671 transitions. [2021-11-23 13:54:07,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 7.551724137931035) internal successors, (219), 30 states have internal predecessors, (219), 9 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-23 13:54:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 9408 states and 31671 transitions. [2021-11-23 13:54:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-23 13:54:07,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:07,585 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 4, 3, 3, 3, 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] [2021-11-23 13:54:07,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:07,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:54:07,786 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:54:07,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:07,786 INFO L85 PathProgramCache]: Analyzing trace with hash 34077040, now seen corresponding path program 1 times [2021-11-23 13:54:07,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:07,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302373760] [2021-11-23 13:54:07,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:07,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-23 13:54:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:08,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-23 13:54:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 13:54:08,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:08,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302373760] [2021-11-23 13:54:08,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302373760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:54:08,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417870000] [2021-11-23 13:54:08,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:08,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:54:08,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:08,819 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:54:08,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 13:54:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:09,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 13:54:09,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:09,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 13:54:09,284 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-23 13:54:09,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2021-11-23 13:54:09,420 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 13:54:09,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2021-11-23 13:54:09,619 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-23 13:54:09,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:54:10,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2021-11-23 13:54:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-23 13:54:10,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417870000] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 13:54:10,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 13:54:10,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [24, 10] total 36 [2021-11-23 13:54:10,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360599666] [2021-11-23 13:54:10,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:10,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:54:10,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:54:10,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:54:10,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2021-11-23 13:54:10,169 INFO L87 Difference]: Start difference. First operand 9408 states and 31671 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:54:12,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:12,214 INFO L93 Difference]: Finished difference Result 19343 states and 85738 transitions. [2021-11-23 13:54:12,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:54:12,217 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2021-11-23 13:54:12,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:12,380 INFO L225 Difference]: With dead ends: 19343 [2021-11-23 13:54:12,380 INFO L226 Difference]: Without dead ends: 9952 [2021-11-23 13:54:12,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=1420, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 13:54:12,697 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 71 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:12,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 835 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 246 Invalid, 0 Unknown, 77 Unchecked, 0.8s Time] [2021-11-23 13:54:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9952 states. [2021-11-23 13:54:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9952 to 9839. [2021-11-23 13:54:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9839 states, 7700 states have (on average 1.0497402597402596) internal successors, (8083), 7496 states have internal predecessors, (8083), 212 states have call successors, (212), 123 states have call predecessors, (212), 1926 states have return successors, (23948), 2219 states have call predecessors, (23948), 209 states have call successors, (23948) [2021-11-23 13:54:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9839 states to 9839 states and 32243 transitions. [2021-11-23 13:54:13,950 INFO L78 Accepts]: Start accepts. Automaton has 9839 states and 32243 transitions. Word has length 98 [2021-11-23 13:54:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:13,950 INFO L470 AbstractCegarLoop]: Abstraction has 9839 states and 32243 transitions. [2021-11-23 13:54:13,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 13:54:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 9839 states and 32243 transitions. [2021-11-23 13:54:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 13:54:13,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:13,976 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 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] [2021-11-23 13:54:14,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:54:14,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-23 13:54:14,177 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:54:14,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash 781246562, now seen corresponding path program 1 times [2021-11-23 13:54:14,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:14,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036584292] [2021-11-23 13:54:14,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:14,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-23 13:54:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-23 13:54:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-23 13:54:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-23 13:54:14,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:14,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036584292] [2021-11-23 13:54:14,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036584292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:14,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:14,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:54:14,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819409396] [2021-11-23 13:54:14,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:14,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:54:14,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:54:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:54:14,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:54:14,524 INFO L87 Difference]: Start difference. First operand 9839 states and 32243 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 13:54:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:17,016 INFO L93 Difference]: Finished difference Result 19719 states and 86291 transitions. [2021-11-23 13:54:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:54:17,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 92 [2021-11-23 13:54:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:17,152 INFO L225 Difference]: With dead ends: 19719 [2021-11-23 13:54:17,153 INFO L226 Difference]: Without dead ends: 9897 [2021-11-23 13:54:17,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:54:17,262 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 105 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:17,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 786 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 13:54:17,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2021-11-23 13:54:18,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 9846. [2021-11-23 13:54:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9846 states, 7706 states have (on average 1.0498313002854918) internal successors, (8090), 7502 states have internal predecessors, (8090), 212 states have call successors, (212), 124 states have call predecessors, (212), 1927 states have return successors, (23891), 2219 states have call predecessors, (23891), 209 states have call successors, (23891) [2021-11-23 13:54:18,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9846 states to 9846 states and 32193 transitions. [2021-11-23 13:54:18,666 INFO L78 Accepts]: Start accepts. Automaton has 9846 states and 32193 transitions. Word has length 92 [2021-11-23 13:54:18,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:18,666 INFO L470 AbstractCegarLoop]: Abstraction has 9846 states and 32193 transitions. [2021-11-23 13:54:18,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 13:54:18,667 INFO L276 IsEmpty]: Start isEmpty. Operand 9846 states and 32193 transitions. [2021-11-23 13:54:18,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 13:54:18,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:18,686 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:18,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-23 13:54:18,686 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION === [ASIdleErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:54:18,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:18,687 INFO L85 PathProgramCache]: Analyzing trace with hash -849926233, now seen corresponding path program 1 times [2021-11-23 13:54:18,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:18,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442662519] [2021-11-23 13:54:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:18,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-23 13:54:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:18,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:54:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:54:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:18,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:54:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-23 13:54:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:54:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-23 13:54:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-23 13:54:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-23 13:54:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-23 13:54:19,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:19,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442662519] [2021-11-23 13:54:19,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442662519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:54:19,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134611428] [2021-11-23 13:54:19,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:19,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:54:19,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:54:19,201 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:54:19,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56a1340a-32ec-4176-83fb-217a197e7cc9/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 13:54:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:19,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-23 13:54:19,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:54:19,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 13:55:34,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:55:35,148 INFO L354 Elim1Store]: treesize reduction 1583, result has 4.6 percent of original size [2021-11-23 13:55:35,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 96 treesize of output 123 [2021-11-23 13:55:46,305 INFO L354 Elim1Store]: treesize reduction 392, result has 0.3 percent of original size [2021-11-23 13:55:46,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 151 treesize of output 61 [2021-11-23 13:55:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 24 proven. 38 refuted. 15 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-23 13:55:46,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:55:51,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2021-11-23 13:55:51,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5144 treesize of output 5140 [2021-11-23 13:55:57,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2021-11-23 13:55:57,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5142 treesize of output 5138 [2021-11-23 13:56:01,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2021-11-23 13:56:01,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5144 treesize of output 5140 [2021-11-23 13:56:06,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2021-11-23 13:56:06,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5144 treesize of output 5140 [2021-11-23 13:56:09,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2021-11-23 13:56:09,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5142 treesize of output 5138 [2021-11-23 13:56:12,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2021-11-23 13:56:12,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5138 treesize of output 5134 [2021-11-23 13:56:14,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2021-11-23 13:56:14,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5114 treesize of output 5110 [2021-11-23 13:57:59,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-23 13:58:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 38 proven. 23 refuted. 16 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-23 13:58:00,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134611428] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:58:00,004 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:58:00,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19, 16] total 40 [2021-11-23 13:58:00,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829069943] [2021-11-23 13:58:00,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:58:00,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-23 13:58:00,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:58:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-23 13:58:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1291, Unknown=79, NotChecked=0, Total=1560 [2021-11-23 13:58:00,006 INFO L87 Difference]: Start difference. First operand 9846 states and 32193 transitions. Second operand has 40 states, 38 states have (on average 5.447368421052632) internal successors, (207), 39 states have internal predecessors, (207), 9 states have call successors, (30), 8 states have call predecessors, (30), 9 states have return successors, (26), 7 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-23 13:58:42,722 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= ~sys_state_s~0~AS_IDLE (select (select |c_old(#memory_int)| c_~user~0.base) c_~user~0.offset)))) (and (or .cse0 (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ASStop_#Ultimate.C_memset_#ptr#1.offset| |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1|) |c_ASStop_#Ultimate.C_memset_#value#1|)) c_~user~0.base) c_~user~0.offset)))) (or (forall ((|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| Int)) (or (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| (+ |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1| 1)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ASStop_#Ultimate.C_memset_#ptr#1.offset| |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|)) c_~user~0.base) c_~user~0.offset))) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| 1)))) .cse0) (or .cse0 (forall ((|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| Int)) (or (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ASStop_#Ultimate.C_memset_#ptr#1.offset| |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|)) c_~user~0.base) c_~user~0.offset))) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| (+ |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1| 1))))) (= c_~user~0.offset 0) (exists ((|ASStop_#Ultimate.C_memset_#value#1| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_706| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_707| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_708| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_709| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_710| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_711| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_712| Int)) (and (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_709| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_710|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_711| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_712|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_706| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_707|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_708| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_709|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_707| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_708|) (<= (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_710| 1) |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_711|) (<= 1 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_706|) (= |c_#memory_int| (store |c_old(#memory_int)| c_~user~0.base (store (store (store (store (store (store (store (store (select |c_old(#memory_int)| c_~user~0.base) (+ c_~user~0.offset 16) |ASStop_#Ultimate.C_memset_#value#1|) (+ c_~user~0.offset 16 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_706|) |ASStop_#Ultimate.C_memset_#value#1|) (+ c_~user~0.offset 16 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_707|) |ASStop_#Ultimate.C_memset_#value#1|) (+ c_~user~0.offset 16 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_708|) |ASStop_#Ultimate.C_memset_#value#1|) (+ c_~user~0.offset 16 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_709|) |ASStop_#Ultimate.C_memset_#value#1|) (+ c_~user~0.offset 16 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_710|) |ASStop_#Ultimate.C_memset_#value#1|) (+ c_~user~0.offset 16 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_711|) |ASStop_#Ultimate.C_memset_#value#1|) (+ c_~user~0.offset 16 |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_712|) |ASStop_#Ultimate.C_memset_#value#1|))))) (or (forall ((|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1505| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| Int)) (or (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (select |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ASStop_#Ultimate.C_memset_#ptr#1.offset| |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1505| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|)) c_~user~0.base) c_~user~0.offset))) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1505| (+ |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1| 1)) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| 1)) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1505| 1)) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| 1)))) .cse0) (or (forall ((|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| Int)) (or (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| 1)) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| (+ |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1| 1)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ASStop_#Ultimate.C_memset_#ptr#1.offset| |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|)) c_~user~0.base) c_~user~0.offset))) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| 1)))) .cse0) (or (forall ((|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1506| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1507| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1505| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| Int) (|v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| Int)) (or (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| 1)) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1507| (+ |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1| 1)) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1505| 1)) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| 1)) (not (= ~sys_state_s~0~AS_IDLE (select (select (store |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (store (select |c_#memory_int| |c_ASStop_#Ultimate.C_memset_#ptr#1.base|) (+ |c_ASStop_#Ultimate.C_memset_#ptr#1.offset| |c_ASStop_#Ultimate.C_memset_#t~loopctr83#1|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1507| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1506| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1505| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1504| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1503| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|) (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1502| |c_ASStop_#Ultimate.C_memset_#ptr#1.offset|) |c_ASStop_#Ultimate.C_memset_#value#1|)) c_~user~0.base) c_~user~0.offset))) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1505| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1506| 1)) (< |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1506| (+ |v_ASStop_#Ultimate.C_memset_#t~loopctr83#1_1507| 1)))) .cse0))) is different from false