./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN --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 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:48:14,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:48:14,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:48:14,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:48:14,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:48:14,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:48:14,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:48:14,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:48:14,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:48:14,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:48:14,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:48:14,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:48:14,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:48:14,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:48:14,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:48:14,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:48:14,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:48:14,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:48:14,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:48:14,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:48:14,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:48:14,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:48:14,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:48:14,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:48:14,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:48:14,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:48:14,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:48:14,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:48:14,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:48:14,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:48:14,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:48:14,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:48:14,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:48:14,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:48:14,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:48:14,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:48:14,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:48:14,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:48:14,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:48:14,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:48:14,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:48:14,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:48:14,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:48:14,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:48:14,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:48:14,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:48:14,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:48:14,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:48:14,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:48:14,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:48:14,491 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:48:14,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:48:14,492 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:48:14,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:48:14,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:48:14,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:48:14,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:48:14,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:48:14,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:48:14,493 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:48:14,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:48:14,493 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:48:14,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:48:14,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:48:14,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:48:14,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:48:14,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:48:14,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:48:14,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:48:14,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:48:14,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:48:14,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:48:14,495 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:48:14,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:48:14,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:48:14,496 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_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e [2022-11-20 10:48:14,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:48:14,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:48:14,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:48:14,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:48:14,806 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:48:14,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2022-11-20 10:48:17,774 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:48:18,139 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:48:18,140 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2022-11-20 10:48:18,163 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/data/0d1d06df4/63bf0b17c4904f05819647193b85120e/FLAG22570892d [2022-11-20 10:48:18,179 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/data/0d1d06df4/63bf0b17c4904f05819647193b85120e [2022-11-20 10:48:18,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:48:18,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:48:18,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:18,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:48:18,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:48:18,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:18" (1/1) ... [2022-11-20 10:48:18,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3967b923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:18, skipping insertion in model container [2022-11-20 10:48:18,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:48:18" (1/1) ... [2022-11-20 10:48:18,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:48:18,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:48:18,525 WARN L237 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_ab011518-94ae-415c-ae3a-280c0c89b7c0/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2022-11-20 10:48:18,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:18,895 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:48:18,953 WARN L237 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_ab011518-94ae-415c-ae3a-280c0c89b7c0/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2022-11-20 10:48:19,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:48:19,076 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:48:19,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19 WrapperNode [2022-11-20 10:48:19,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:48:19,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:19,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:48:19,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:48:19,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,191 INFO L138 Inliner]: procedures = 95, calls = 344, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 873 [2022-11-20 10:48:19,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:48:19,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:48:19,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:48:19,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:48:19,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:48:19,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:48:19,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:48:19,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:48:19,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (1/1) ... [2022-11-20 10:48:19,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:48:19,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:48:19,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:48:19,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:48:19,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:48:19,429 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-20 10:48:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-20 10:48:19,429 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-20 10:48:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-20 10:48:19,430 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-20 10:48:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-20 10:48:19,430 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-20 10:48:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-20 10:48:19,430 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-20 10:48:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-20 10:48:19,431 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-20 10:48:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-20 10:48:19,431 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 10:48:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 10:48:19,431 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 10:48:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 10:48:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-20 10:48:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-20 10:48:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-20 10:48:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-20 10:48:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-20 10:48:19,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-20 10:48:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-20 10:48:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-20 10:48:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-20 10:48:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-20 10:48:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-20 10:48:19,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-20 10:48:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-20 10:48:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-20 10:48:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-20 10:48:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-20 10:48:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-20 10:48:19,434 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-20 10:48:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-20 10:48:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-20 10:48:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-20 10:48:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-20 10:48:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-11-20 10:48:19,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-11-20 10:48:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:48:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-20 10:48:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-20 10:48:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-20 10:48:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-20 10:48:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-20 10:48:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-20 10:48:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-20 10:48:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-20 10:48:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-20 10:48:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-20 10:48:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:48:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:48:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-20 10:48:19,438 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-20 10:48:19,603 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:48:19,605 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:48:20,943 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:48:20,955 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:48:20,955 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:48:20,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:20 BoogieIcfgContainer [2022-11-20 10:48:20,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:48:20,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:48:20,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:48:20,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:48:20,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:48:18" (1/3) ... [2022-11-20 10:48:20,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1c55fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:20, skipping insertion in model container [2022-11-20 10:48:20,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:48:19" (2/3) ... [2022-11-20 10:48:20,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f1c55fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:48:20, skipping insertion in model container [2022-11-20 10:48:20,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:48:20" (3/3) ... [2022-11-20 10:48:20,968 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2022-11-20 10:48:20,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:48:20,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:48:21,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:48:21,083 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@705b1c48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:48:21,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:48:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 576 states, 452 states have (on average 1.6924778761061947) internal successors, (765), 475 states have internal predecessors, (765), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 10:48:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 10:48:21,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:21,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:21,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:21,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:21,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1316381237, now seen corresponding path program 1 times [2022-11-20 10:48:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:21,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861623215] [2022-11-20 10:48:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:21,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:21,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:48:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:48:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:22,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 10:48:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:22,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:48:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:48:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:22,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861623215] [2022-11-20 10:48:22,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861623215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:22,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:22,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:48:22,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454968936] [2022-11-20 10:48:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:22,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:22,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:22,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:22,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:48:22,428 INFO L87 Difference]: Start difference. First operand has 576 states, 452 states have (on average 1.6924778761061947) internal successors, (765), 475 states have internal predecessors, (765), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:48:29,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:29,284 INFO L93 Difference]: Finished difference Result 1286 states and 2168 transitions. [2022-11-20 10:48:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:48:29,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-11-20 10:48:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:29,318 INFO L225 Difference]: With dead ends: 1286 [2022-11-20 10:48:29,318 INFO L226 Difference]: Without dead ends: 722 [2022-11-20 10:48:29,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:29,332 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1182 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:29,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1194 Invalid, 2953 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [258 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-20 10:48:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-20 10:48:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2022-11-20 10:48:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.688340807174888) internal successors, (753), 467 states have internal predecessors, (753), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 10:48:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 940 transitions. [2022-11-20 10:48:29,567 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 940 transitions. Word has length 62 [2022-11-20 10:48:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:29,568 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 940 transitions. [2022-11-20 10:48:29,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:48:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 940 transitions. [2022-11-20 10:48:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 10:48:29,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:29,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:29,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:48:29,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:29,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:29,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2014226098, now seen corresponding path program 1 times [2022-11-20 10:48:29,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:29,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662893248] [2022-11-20 10:48:29,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:29,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:29,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:48:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:29,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:48:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:30,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 10:48:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:48:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:48:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:30,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:30,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662893248] [2022-11-20 10:48:30,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662893248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:30,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:30,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:48:30,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105607291] [2022-11-20 10:48:30,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:30,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:30,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:30,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:30,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:48:30,216 INFO L87 Difference]: Start difference. First operand 568 states and 940 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:48:37,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:37,586 INFO L93 Difference]: Finished difference Result 1272 states and 2134 transitions. [2022-11-20 10:48:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:48:37,587 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-11-20 10:48:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:37,606 INFO L225 Difference]: With dead ends: 1272 [2022-11-20 10:48:37,606 INFO L226 Difference]: Without dead ends: 722 [2022-11-20 10:48:37,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:37,619 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 709 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:37,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1168 Invalid, 2992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 10:48:37,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-20 10:48:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2022-11-20 10:48:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6860986547085202) internal successors, (752), 467 states have internal predecessors, (752), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 10:48:37,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 939 transitions. [2022-11-20 10:48:37,761 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 939 transitions. Word has length 65 [2022-11-20 10:48:37,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:37,762 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 939 transitions. [2022-11-20 10:48:37,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:48:37,763 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 939 transitions. [2022-11-20 10:48:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 10:48:37,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:37,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:37,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:48:37,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:37,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:37,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1200980869, now seen corresponding path program 1 times [2022-11-20 10:48:37,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:37,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345090055] [2022-11-20 10:48:37,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:37,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:37,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:48:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:38,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:38,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:48:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 10:48:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:48:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:38,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:48:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:38,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:38,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345090055] [2022-11-20 10:48:38,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345090055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:38,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:38,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:48:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622815753] [2022-11-20 10:48:38,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:38,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:48:38,322 INFO L87 Difference]: Start difference. First operand 568 states and 939 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:48:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:44,830 INFO L93 Difference]: Finished difference Result 1272 states and 2133 transitions. [2022-11-20 10:48:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:48:44,831 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-11-20 10:48:44,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:44,837 INFO L225 Difference]: With dead ends: 1272 [2022-11-20 10:48:44,838 INFO L226 Difference]: Without dead ends: 722 [2022-11-20 10:48:44,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:44,842 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1179 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:44,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 1145 Invalid, 2951 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [264 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-20 10:48:44,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-20 10:48:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2022-11-20 10:48:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6838565022421526) internal successors, (751), 467 states have internal predecessors, (751), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 10:48:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 938 transitions. [2022-11-20 10:48:44,997 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 938 transitions. Word has length 66 [2022-11-20 10:48:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:44,998 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 938 transitions. [2022-11-20 10:48:44,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:48:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 938 transitions. [2022-11-20 10:48:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 10:48:45,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:45,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:45,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:48:45,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:45,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash 541895310, now seen corresponding path program 1 times [2022-11-20 10:48:45,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:45,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855510231] [2022-11-20 10:48:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:45,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:48:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 10:48:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 10:48:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:48:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:48:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:45,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:45,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:45,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855510231] [2022-11-20 10:48:45,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855510231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:45,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:45,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:48:45,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944272371] [2022-11-20 10:48:45,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:45,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:48:45,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:45,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:48:45,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:48:45,506 INFO L87 Difference]: Start difference. First operand 568 states and 938 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:48:52,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:48:52,508 INFO L93 Difference]: Finished difference Result 1272 states and 2132 transitions. [2022-11-20 10:48:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:48:52,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-11-20 10:48:52,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:48:52,516 INFO L225 Difference]: With dead ends: 1272 [2022-11-20 10:48:52,516 INFO L226 Difference]: Without dead ends: 722 [2022-11-20 10:48:52,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:48:52,521 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 704 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 2864 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:48:52,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1174 Invalid, 2983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 2864 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 10:48:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-20 10:48:52,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2022-11-20 10:48:52,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 467 states have internal predecessors, (750), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 10:48:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 937 transitions. [2022-11-20 10:48:52,674 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 937 transitions. Word has length 67 [2022-11-20 10:48:52,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:48:52,674 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 937 transitions. [2022-11-20 10:48:52,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:48:52,675 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 937 transitions. [2022-11-20 10:48:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 10:48:52,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:48:52,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:48:52,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:48:52,687 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:48:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:48:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash 366792225, now seen corresponding path program 1 times [2022-11-20 10:48:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:48:52,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415816433] [2022-11-20 10:48:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:48:52,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:48:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:48:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:52,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:53,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 10:48:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 10:48:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:53,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:53,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:48:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:53,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:48:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:53,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:48:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:48:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:48:53,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:48:53,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415816433] [2022-11-20 10:48:53,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415816433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:48:53,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:48:53,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:48:53,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20947741] [2022-11-20 10:48:53,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:48:53,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:48:53,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:48:53,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:48:53,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:48:53,378 INFO L87 Difference]: Start difference. First operand 568 states and 937 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:01,100 INFO L93 Difference]: Finished difference Result 1284 states and 2155 transitions. [2022-11-20 10:49:01,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:49:01,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-20 10:49:01,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:01,107 INFO L225 Difference]: With dead ends: 1284 [2022-11-20 10:49:01,107 INFO L226 Difference]: Without dead ends: 734 [2022-11-20 10:49:01,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:49:01,112 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1227 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 5078 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 5351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 5078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:01,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 2030 Invalid, 5351 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [273 Valid, 5078 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-20 10:49:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-11-20 10:49:01,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 572. [2022-11-20 10:49:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.6748329621380846) internal successors, (752), 470 states have internal predecessors, (752), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-11-20 10:49:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 941 transitions. [2022-11-20 10:49:01,278 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 941 transitions. Word has length 68 [2022-11-20 10:49:01,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:01,279 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 941 transitions. [2022-11-20 10:49:01,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:01,279 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 941 transitions. [2022-11-20 10:49:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 10:49:01,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:01,283 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:01,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:49:01,283 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2050407705, now seen corresponding path program 1 times [2022-11-20 10:49:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:01,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442992942] [2022-11-20 10:49:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:49:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:01,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:01,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:49:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:01,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:49:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:01,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:02,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:49:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:02,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:49:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:02,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 10:49:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:02,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:49:02,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:02,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442992942] [2022-11-20 10:49:02,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442992942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:02,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:02,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:49:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491147936] [2022-11-20 10:49:02,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:02,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:49:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:02,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:49:02,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:49:02,142 INFO L87 Difference]: Start difference. First operand 572 states and 941 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 10:49:16,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:16,003 INFO L93 Difference]: Finished difference Result 1576 states and 2624 transitions. [2022-11-20 10:49:16,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 10:49:16,004 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2022-11-20 10:49:16,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:16,012 INFO L225 Difference]: With dead ends: 1576 [2022-11-20 10:49:16,012 INFO L226 Difference]: Without dead ends: 1062 [2022-11-20 10:49:16,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-11-20 10:49:16,017 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1941 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 9267 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 9677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 9267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:16,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 2762 Invalid, 9677 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [410 Valid, 9267 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-20 10:49:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-11-20 10:49:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 821. [2022-11-20 10:49:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 647 states have (on average 1.6491499227202473) internal successors, (1067), 668 states have internal predecessors, (1067), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-20 10:49:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1336 transitions. [2022-11-20 10:49:16,199 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1336 transitions. Word has length 75 [2022-11-20 10:49:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:16,200 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1336 transitions. [2022-11-20 10:49:16,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 10:49:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1336 transitions. [2022-11-20 10:49:16,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 10:49:16,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:16,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:16,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:49:16,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:16,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:16,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1074794078, now seen corresponding path program 1 times [2022-11-20 10:49:16,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:16,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602055513] [2022-11-20 10:49:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:16,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:16,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:49:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:16,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:49:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:16,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 10:49:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:16,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:16,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:49:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:16,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:49:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:16,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:16,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602055513] [2022-11-20 10:49:16,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602055513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:16,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:16,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:49:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939955344] [2022-11-20 10:49:16,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:16,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:16,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:16,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:16,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:16,718 INFO L87 Difference]: Start difference. First operand 821 states and 1336 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:23,199 INFO L93 Difference]: Finished difference Result 1772 states and 2918 transitions. [2022-11-20 10:49:23,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:23,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-11-20 10:49:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:23,207 INFO L225 Difference]: With dead ends: 1772 [2022-11-20 10:49:23,207 INFO L226 Difference]: Without dead ends: 1009 [2022-11-20 10:49:23,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:23,212 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 791 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:23,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1159 Invalid, 2885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-20 10:49:23,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-20 10:49:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 821. [2022-11-20 10:49:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 647 states have (on average 1.6414219474497682) internal successors, (1062), 668 states have internal predecessors, (1062), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-20 10:49:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1331 transitions. [2022-11-20 10:49:23,455 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1331 transitions. Word has length 75 [2022-11-20 10:49:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:23,455 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1331 transitions. [2022-11-20 10:49:23,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:23,456 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1331 transitions. [2022-11-20 10:49:23,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 10:49:23,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:23,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:23,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:49:23,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1219775336, now seen corresponding path program 1 times [2022-11-20 10:49:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:23,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725986703] [2022-11-20 10:49:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:49:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:49:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:49:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:49:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:49:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:23,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:23,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725986703] [2022-11-20 10:49:23,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725986703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:23,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:23,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:49:23,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734149495] [2022-11-20 10:49:23,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:23,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:23,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:23,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:23,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:23,966 INFO L87 Difference]: Start difference. First operand 821 states and 1331 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:30,296 INFO L93 Difference]: Finished difference Result 1772 states and 2913 transitions. [2022-11-20 10:49:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:30,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-11-20 10:49:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:30,303 INFO L225 Difference]: With dead ends: 1772 [2022-11-20 10:49:30,303 INFO L226 Difference]: Without dead ends: 1009 [2022-11-20 10:49:30,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:30,307 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 784 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:30,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 1159 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-20 10:49:30,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-20 10:49:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 821. [2022-11-20 10:49:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 647 states have (on average 1.6336939721792891) internal successors, (1057), 668 states have internal predecessors, (1057), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-20 10:49:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1326 transitions. [2022-11-20 10:49:30,525 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1326 transitions. Word has length 76 [2022-11-20 10:49:30,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:30,525 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1326 transitions. [2022-11-20 10:49:30,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:30,526 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1326 transitions. [2022-11-20 10:49:30,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:49:30,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:30,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:30,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:49:30,528 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:30,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1673039613, now seen corresponding path program 1 times [2022-11-20 10:49:30,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:30,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814442153] [2022-11-20 10:49:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:30,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:30,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:49:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:30,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:30,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:49:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:49:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:49:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:49:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:31,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:31,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814442153] [2022-11-20 10:49:31,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814442153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:31,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:31,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:49:31,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093193138] [2022-11-20 10:49:31,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:31,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:31,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:31,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:31,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:31,022 INFO L87 Difference]: Start difference. First operand 821 states and 1326 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:36,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:36,673 INFO L93 Difference]: Finished difference Result 1772 states and 2908 transitions. [2022-11-20 10:49:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-11-20 10:49:36,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:36,680 INFO L225 Difference]: With dead ends: 1772 [2022-11-20 10:49:36,680 INFO L226 Difference]: Without dead ends: 1009 [2022-11-20 10:49:36,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:36,684 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1254 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:36,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 1140 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 10:49:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-20 10:49:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 821. [2022-11-20 10:49:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 647 states have (on average 1.6259659969088098) internal successors, (1052), 668 states have internal predecessors, (1052), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-20 10:49:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1321 transitions. [2022-11-20 10:49:36,906 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1321 transitions. Word has length 77 [2022-11-20 10:49:36,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:36,906 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1321 transitions. [2022-11-20 10:49:36,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1321 transitions. [2022-11-20 10:49:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:49:36,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:36,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:36,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:49:36,910 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:36,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1781030204, now seen corresponding path program 1 times [2022-11-20 10:49:36,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:36,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295103050] [2022-11-20 10:49:36,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:36,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:49:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:49:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:49:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:49:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:49:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:37,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:37,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:37,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295103050] [2022-11-20 10:49:37,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295103050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:37,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:37,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:49:37,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030025347] [2022-11-20 10:49:37,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:37,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:37,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:37,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:37,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:37,443 INFO L87 Difference]: Start difference. First operand 821 states and 1321 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:44,068 INFO L93 Difference]: Finished difference Result 1787 states and 2923 transitions. [2022-11-20 10:49:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:49:44,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-11-20 10:49:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:44,074 INFO L225 Difference]: With dead ends: 1787 [2022-11-20 10:49:44,074 INFO L226 Difference]: Without dead ends: 1030 [2022-11-20 10:49:44,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:49:44,077 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 780 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:44,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1146 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 10:49:44,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-20 10:49:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 823. [2022-11-20 10:49:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 649 states have (on average 1.6240369799691834) internal successors, (1054), 670 states have internal predecessors, (1054), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-20 10:49:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1323 transitions. [2022-11-20 10:49:44,342 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1323 transitions. Word has length 77 [2022-11-20 10:49:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:44,342 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1323 transitions. [2022-11-20 10:49:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1323 transitions. [2022-11-20 10:49:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 10:49:44,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:44,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:44,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:49:44,347 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:44,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash -46710829, now seen corresponding path program 1 times [2022-11-20 10:49:44,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:44,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343955019] [2022-11-20 10:49:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:44,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:49:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:49:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 10:49:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:49:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:49:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:44,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:44,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343955019] [2022-11-20 10:49:44,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343955019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:44,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:44,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:49:44,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697405296] [2022-11-20 10:49:44,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:44,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:44,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:44,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:44,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:44,878 INFO L87 Difference]: Start difference. First operand 823 states and 1323 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:51,143 INFO L93 Difference]: Finished difference Result 1778 states and 2909 transitions. [2022-11-20 10:49:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:51,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-11-20 10:49:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:51,149 INFO L225 Difference]: With dead ends: 1778 [2022-11-20 10:49:51,149 INFO L226 Difference]: Without dead ends: 1013 [2022-11-20 10:49:51,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:51,153 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 782 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:51,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1149 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 10:49:51,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-11-20 10:49:51,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 823. [2022-11-20 10:49:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 649 states have (on average 1.6163328197226503) internal successors, (1049), 670 states have internal predecessors, (1049), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-20 10:49:51,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1318 transitions. [2022-11-20 10:49:51,367 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1318 transitions. Word has length 78 [2022-11-20 10:49:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:51,367 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1318 transitions. [2022-11-20 10:49:51,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1318 transitions. [2022-11-20 10:49:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 10:49:51,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:51,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:51,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:49:51,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:51,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1615764426, now seen corresponding path program 1 times [2022-11-20 10:49:51,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:51,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521764639] [2022-11-20 10:49:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:49:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:49:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 10:49:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:49:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:49:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:51,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:51,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521764639] [2022-11-20 10:49:51,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521764639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:51,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:51,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:49:51,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857514479] [2022-11-20 10:49:51,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:51,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:51,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:51,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:51,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:49:51,840 INFO L87 Difference]: Start difference. First operand 823 states and 1318 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:57,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:49:57,976 INFO L93 Difference]: Finished difference Result 1791 states and 2920 transitions. [2022-11-20 10:49:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:49:57,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-11-20 10:49:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:49:57,982 INFO L225 Difference]: With dead ends: 1791 [2022-11-20 10:49:57,982 INFO L226 Difference]: Without dead ends: 1034 [2022-11-20 10:49:57,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:49:57,986 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1250 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:49:57,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 1132 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 10:49:57,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2022-11-20 10:49:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 826. [2022-11-20 10:49:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 652 states have (on average 1.6134969325153374) internal successors, (1052), 673 states have internal predecessors, (1052), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-20 10:49:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1321 transitions. [2022-11-20 10:49:58,187 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1321 transitions. Word has length 78 [2022-11-20 10:49:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:49:58,187 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1321 transitions. [2022-11-20 10:49:58,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:49:58,188 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1321 transitions. [2022-11-20 10:49:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:49:58,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:49:58,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:49:58,191 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:49:58,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1272899672, now seen corresponding path program 1 times [2022-11-20 10:49:58,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:58,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146996328] [2022-11-20 10:49:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:49:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:49:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:49:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:49:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:49:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:49:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:49:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:58,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146996328] [2022-11-20 10:49:58,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146996328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:58,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:58,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:49:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153332781] [2022-11-20 10:49:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:58,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:49:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:49:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:49:58,763 INFO L87 Difference]: Start difference. First operand 826 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:50:06,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:06,750 INFO L93 Difference]: Finished difference Result 1795 states and 2926 transitions. [2022-11-20 10:50:06,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:50:06,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2022-11-20 10:50:06,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:06,759 INFO L225 Difference]: With dead ends: 1795 [2022-11-20 10:50:06,759 INFO L226 Difference]: Without dead ends: 1041 [2022-11-20 10:50:06,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:50:06,765 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 783 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 5172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:06,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 2088 Invalid, 5172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-20 10:50:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-11-20 10:50:07,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 837. [2022-11-20 10:50:07,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 660 states have (on average 1.6106060606060606) internal successors, (1063), 683 states have internal predecessors, (1063), 134 states have call successors, (134), 39 states have call predecessors, (134), 42 states have return successors, (139), 128 states have call predecessors, (139), 129 states have call successors, (139) [2022-11-20 10:50:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1336 transitions. [2022-11-20 10:50:07,008 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1336 transitions. Word has length 79 [2022-11-20 10:50:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:07,008 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1336 transitions. [2022-11-20 10:50:07,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 10:50:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1336 transitions. [2022-11-20 10:50:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:50:07,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:07,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:07,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:50:07,012 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:50:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:07,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1010722263, now seen corresponding path program 1 times [2022-11-20 10:50:07,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:07,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383505578] [2022-11-20 10:50:07,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:07,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:07,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:50:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:50:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:50:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:07,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:50:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:07,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:07,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:07,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383505578] [2022-11-20 10:50:07,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383505578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:07,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:07,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:50:07,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342366737] [2022-11-20 10:50:07,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:07,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:07,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:07,511 INFO L87 Difference]: Start difference. First operand 837 states and 1336 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:50:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:14,211 INFO L93 Difference]: Finished difference Result 1818 states and 2957 transitions. [2022-11-20 10:50:14,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:50:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-11-20 10:50:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:14,219 INFO L225 Difference]: With dead ends: 1818 [2022-11-20 10:50:14,219 INFO L226 Difference]: Without dead ends: 1058 [2022-11-20 10:50:14,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:50:14,222 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 771 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:14,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1141 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-20 10:50:14,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-20 10:50:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 841. [2022-11-20 10:50:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 664 states have (on average 1.605421686746988) internal successors, (1066), 687 states have internal predecessors, (1066), 134 states have call successors, (134), 39 states have call predecessors, (134), 42 states have return successors, (139), 128 states have call predecessors, (139), 129 states have call successors, (139) [2022-11-20 10:50:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1339 transitions. [2022-11-20 10:50:14,475 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1339 transitions. Word has length 79 [2022-11-20 10:50:14,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:14,475 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1339 transitions. [2022-11-20 10:50:14,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:50:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1339 transitions. [2022-11-20 10:50:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:50:14,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:14,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:14,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:50:14,478 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:50:14,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash -534947849, now seen corresponding path program 1 times [2022-11-20 10:50:14,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:14,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107264236] [2022-11-20 10:50:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:14,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:50:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:50:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:50:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:50:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:14,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:14,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107264236] [2022-11-20 10:50:14,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107264236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:14,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:14,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:50:14,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625520760] [2022-11-20 10:50:14,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:14,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:14,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:14,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:14,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:14,913 INFO L87 Difference]: Start difference. First operand 841 states and 1339 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:50:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:21,324 INFO L93 Difference]: Finished difference Result 1860 states and 3000 transitions. [2022-11-20 10:50:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:50:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-11-20 10:50:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:21,330 INFO L225 Difference]: With dead ends: 1860 [2022-11-20 10:50:21,330 INFO L226 Difference]: Without dead ends: 1017 [2022-11-20 10:50:21,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:50:21,333 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 696 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:21,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1149 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 10:50:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-11-20 10:50:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 822. [2022-11-20 10:50:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 648 states have (on average 1.6111111111111112) internal successors, (1044), 669 states have internal predecessors, (1044), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-20 10:50:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1313 transitions. [2022-11-20 10:50:21,581 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1313 transitions. Word has length 79 [2022-11-20 10:50:21,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:21,581 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1313 transitions. [2022-11-20 10:50:21,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:50:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1313 transitions. [2022-11-20 10:50:21,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 10:50:21,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:21,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:21,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:50:21,584 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:50:21,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1380368817, now seen corresponding path program 1 times [2022-11-20 10:50:21,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:21,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407818281] [2022-11-20 10:50:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:21,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:50:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:50:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 10:50:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:22,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:22,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:22,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:50:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:22,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:22,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:22,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407818281] [2022-11-20 10:50:22,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407818281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:22,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:22,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:50:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397784319] [2022-11-20 10:50:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:22,060 INFO L87 Difference]: Start difference. First operand 822 states and 1313 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:50:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:28,685 INFO L93 Difference]: Finished difference Result 1795 states and 2915 transitions. [2022-11-20 10:50:28,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:50:28,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-11-20 10:50:28,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:28,691 INFO L225 Difference]: With dead ends: 1795 [2022-11-20 10:50:28,691 INFO L226 Difference]: Without dead ends: 1038 [2022-11-20 10:50:28,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:50:28,694 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 746 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:28,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1142 Invalid, 2815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-20 10:50:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-20 10:50:28,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 827. [2022-11-20 10:50:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 653 states have (on average 1.6064318529862174) internal successors, (1049), 674 states have internal predecessors, (1049), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-20 10:50:28,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1318 transitions. [2022-11-20 10:50:28,998 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1318 transitions. Word has length 80 [2022-11-20 10:50:28,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:28,998 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1318 transitions. [2022-11-20 10:50:28,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 10:50:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1318 transitions. [2022-11-20 10:50:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 10:50:29,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:29,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:29,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:50:29,001 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:50:29,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1722677858, now seen corresponding path program 1 times [2022-11-20 10:50:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:29,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923125957] [2022-11-20 10:50:29,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:50:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:50:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 10:50:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:50:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 10:50:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:50:29,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:29,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923125957] [2022-11-20 10:50:29,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923125957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:29,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:29,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:50:29,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104788874] [2022-11-20 10:50:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:29,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:50:29,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:50:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:50:29,699 INFO L87 Difference]: Start difference. First operand 827 states and 1318 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 10:50:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:42,180 INFO L93 Difference]: Finished difference Result 2877 states and 4767 transitions. [2022-11-20 10:50:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 10:50:42,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 81 [2022-11-20 10:50:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:42,190 INFO L225 Difference]: With dead ends: 2877 [2022-11-20 10:50:42,190 INFO L226 Difference]: Without dead ends: 2129 [2022-11-20 10:50:42,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:50:42,193 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 3587 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 3812 mSolverCounterSat, 971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3672 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 4783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 971 IncrementalHoareTripleChecker+Valid, 3812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:42,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3672 Valid, 1482 Invalid, 4783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [971 Valid, 3812 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-11-20 10:50:42,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2022-11-20 10:50:42,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1584. [2022-11-20 10:50:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1252 states have (on average 1.626996805111821) internal successors, (2037), 1282 states have internal predecessors, (2037), 253 states have call successors, (253), 72 states have call predecessors, (253), 78 states have return successors, (273), 242 states have call predecessors, (273), 248 states have call successors, (273) [2022-11-20 10:50:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2563 transitions. [2022-11-20 10:50:42,763 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2563 transitions. Word has length 81 [2022-11-20 10:50:42,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:42,764 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2563 transitions. [2022-11-20 10:50:42,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 10:50:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2563 transitions. [2022-11-20 10:50:42,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 10:50:42,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:42,769 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:42,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:50:42,770 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:50:42,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:42,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1774520580, now seen corresponding path program 1 times [2022-11-20 10:50:42,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:42,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709685237] [2022-11-20 10:50:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:42,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:50:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:43,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:50:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:43,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 10:50:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:43,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:43,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:50:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:50:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 10:50:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:50:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 10:50:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 10:50:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:50:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 10:50:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:50:44,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709685237] [2022-11-20 10:50:44,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709685237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:44,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:44,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:50:44,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287130979] [2022-11-20 10:50:44,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:44,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:50:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:44,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:50:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:50:44,051 INFO L87 Difference]: Start difference. First operand 1584 states and 2563 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-20 10:50:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:50:55,819 INFO L93 Difference]: Finished difference Result 3937 states and 6584 transitions. [2022-11-20 10:50:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:50:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 121 [2022-11-20 10:50:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:50:55,832 INFO L225 Difference]: With dead ends: 3937 [2022-11-20 10:50:55,832 INFO L226 Difference]: Without dead ends: 2432 [2022-11-20 10:50:55,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2022-11-20 10:50:55,839 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 3840 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 4124 mSolverCounterSat, 1798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3840 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 5922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1798 IncrementalHoareTripleChecker+Valid, 4124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:50:55,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3840 Valid, 1806 Invalid, 5922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1798 Valid, 4124 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-20 10:50:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-11-20 10:50:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 1594. [2022-11-20 10:50:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1260 states have (on average 1.623015873015873) internal successors, (2045), 1290 states have internal predecessors, (2045), 253 states have call successors, (253), 72 states have call predecessors, (253), 80 states have return successors, (275), 242 states have call predecessors, (275), 248 states have call successors, (275) [2022-11-20 10:50:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2573 transitions. [2022-11-20 10:50:56,399 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2573 transitions. Word has length 121 [2022-11-20 10:50:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:50:56,399 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2573 transitions. [2022-11-20 10:50:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-20 10:50:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2573 transitions. [2022-11-20 10:50:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 10:50:56,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:50:56,405 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:50:56,405 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:50:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1054983864, now seen corresponding path program 1 times [2022-11-20 10:50:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:56,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319556260] [2022-11-20 10:50:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:56,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:56,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:50:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:50:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:56,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 10:50:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:50:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:50:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:50:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:50:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:50:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 10:50:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 10:50:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:50:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:50:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 10:50:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:50:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:57,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319556260] [2022-11-20 10:50:57,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319556260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:57,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:57,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 10:50:57,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723530016] [2022-11-20 10:50:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:57,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:50:57,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:57,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:50:57,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:50:57,651 INFO L87 Difference]: Start difference. First operand 1594 states and 2573 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 10:51:16,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:16,820 INFO L93 Difference]: Finished difference Result 4785 states and 8095 transitions. [2022-11-20 10:51:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 10:51:16,821 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2022-11-20 10:51:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:16,843 INFO L225 Difference]: With dead ends: 4785 [2022-11-20 10:51:16,844 INFO L226 Difference]: Without dead ends: 3270 [2022-11-20 10:51:16,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 10:51:16,852 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 4274 mSDsluCounter, 3839 mSDsCounter, 0 mSdLazyCounter, 8939 mSolverCounterSat, 1361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 10300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1361 IncrementalHoareTripleChecker+Valid, 8939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:16,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 4350 Invalid, 10300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1361 Valid, 8939 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-20 10:51:16,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-11-20 10:51:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2456. [2022-11-20 10:51:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 1932 states have (on average 1.610248447204969) internal successors, (3111), 1979 states have internal predecessors, (3111), 386 states have call successors, (386), 109 states have call predecessors, (386), 137 states have return successors, (514), 389 states have call predecessors, (514), 381 states have call successors, (514) [2022-11-20 10:51:18,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4011 transitions. [2022-11-20 10:51:18,082 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4011 transitions. Word has length 124 [2022-11-20 10:51:18,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:18,082 INFO L495 AbstractCegarLoop]: Abstraction has 2456 states and 4011 transitions. [2022-11-20 10:51:18,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 10:51:18,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4011 transitions. [2022-11-20 10:51:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-20 10:51:18,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:18,090 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:18,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:51:18,091 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:18,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1378423338, now seen corresponding path program 1 times [2022-11-20 10:51:18,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:18,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168170951] [2022-11-20 10:51:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:18,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:18,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:51:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:18,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:18,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:51:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 10:51:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:51:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:51:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:51:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:51:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:51:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:51:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 10:51:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 10:51:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 10:51:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:19,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:51:19,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:19,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168170951] [2022-11-20 10:51:19,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168170951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:19,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:19,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:51:19,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799706541] [2022-11-20 10:51:19,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:19,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:51:19,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:19,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:51:19,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:51:19,321 INFO L87 Difference]: Start difference. First operand 2456 states and 4011 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 10:51:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:39,173 INFO L93 Difference]: Finished difference Result 7860 states and 13775 transitions. [2022-11-20 10:51:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:51:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2022-11-20 10:51:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:39,211 INFO L225 Difference]: With dead ends: 7860 [2022-11-20 10:51:39,211 INFO L226 Difference]: Without dead ends: 5484 [2022-11-20 10:51:39,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:51:39,226 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 4241 mSDsluCounter, 3573 mSDsCounter, 0 mSdLazyCounter, 7923 mSolverCounterSat, 1354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 4130 SdHoareTripleChecker+Invalid, 9277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1354 IncrementalHoareTripleChecker+Valid, 7923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:39,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4320 Valid, 4130 Invalid, 9277 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1354 Valid, 7923 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-20 10:51:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2022-11-20 10:51:40,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 4168. [2022-11-20 10:51:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 3274 states have (on average 1.6072083078802688) internal successors, (5262), 3344 states have internal predecessors, (5262), 657 states have call successors, (657), 183 states have call predecessors, (657), 236 states have return successors, (1050), 684 states have call predecessors, (1050), 652 states have call successors, (1050) [2022-11-20 10:51:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 6969 transitions. [2022-11-20 10:51:40,668 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 6969 transitions. Word has length 126 [2022-11-20 10:51:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:40,668 INFO L495 AbstractCegarLoop]: Abstraction has 4168 states and 6969 transitions. [2022-11-20 10:51:40,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 10:51:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 6969 transitions. [2022-11-20 10:51:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 10:51:40,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:40,674 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:40,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 10:51:40,674 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:40,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1578518171, now seen corresponding path program 1 times [2022-11-20 10:51:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:40,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989167311] [2022-11-20 10:51:40,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:40,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:51:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:51:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 10:51:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:51:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:51:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:51:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:51:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:51:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:51:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:51:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:51:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 10:51:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:51:41,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989167311] [2022-11-20 10:51:41,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989167311] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717666352] [2022-11-20 10:51:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:41,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:41,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:41,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:51:41,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:51:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:42,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:51:42,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:51:42,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:51:42,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717666352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:42,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:51:42,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-11-20 10:51:42,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349810364] [2022-11-20 10:51:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:42,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:51:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:51:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-20 10:51:42,650 INFO L87 Difference]: Start difference. First operand 4168 states and 6969 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 10:51:49,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:49,444 INFO L93 Difference]: Finished difference Result 12626 states and 22344 transitions. [2022-11-20 10:51:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:51:49,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 127 [2022-11-20 10:51:49,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:49,494 INFO L225 Difference]: With dead ends: 12626 [2022-11-20 10:51:49,494 INFO L226 Difference]: Without dead ends: 8536 [2022-11-20 10:51:49,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-20 10:51:49,513 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 2865 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 3503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:49,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3000 Valid, 1621 Invalid, 3503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 2854 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 10:51:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8536 states. [2022-11-20 10:51:52,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8536 to 8323. [2022-11-20 10:51:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8323 states, 6365 states have (on average 1.599057344854674) internal successors, (10178), 6558 states have internal predecessors, (10178), 1503 states have call successors, (1503), 331 states have call predecessors, (1503), 454 states have return successors, (2846), 1585 states have call predecessors, (2846), 1498 states have call successors, (2846) [2022-11-20 10:51:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 14527 transitions. [2022-11-20 10:51:52,926 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 14527 transitions. Word has length 127 [2022-11-20 10:51:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:52,926 INFO L495 AbstractCegarLoop]: Abstraction has 8323 states and 14527 transitions. [2022-11-20 10:51:52,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-20 10:51:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 14527 transitions. [2022-11-20 10:51:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-20 10:51:52,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:52,933 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:52,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:53,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 10:51:53,142 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1363452713, now seen corresponding path program 1 times [2022-11-20 10:51:53,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:53,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188542884] [2022-11-20 10:51:53,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:53,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:53,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:51:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:53,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:53,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:51:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 10:51:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:51:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:51:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:51:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:51:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:51:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:51:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 10:51:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 10:51:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 10:51:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:51:54,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:54,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188542884] [2022-11-20 10:51:54,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188542884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:54,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:54,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 10:51:54,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044211184] [2022-11-20 10:51:54,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:54,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:51:54,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:51:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:51:54,350 INFO L87 Difference]: Start difference. First operand 8323 states and 14527 transitions. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-20 10:52:29,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:52:29,467 INFO L93 Difference]: Finished difference Result 29620 states and 60666 transitions. [2022-11-20 10:52:29,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 10:52:29,468 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 126 [2022-11-20 10:52:29,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:52:29,690 INFO L225 Difference]: With dead ends: 29620 [2022-11-20 10:52:29,690 INFO L226 Difference]: Without dead ends: 21383 [2022-11-20 10:52:29,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=543, Invalid=2109, Unknown=0, NotChecked=0, Total=2652 [2022-11-20 10:52:29,786 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 6449 mSDsluCounter, 3972 mSDsCounter, 0 mSdLazyCounter, 10565 mSolverCounterSat, 2298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6491 SdHoareTripleChecker+Valid, 4653 SdHoareTripleChecker+Invalid, 12863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2298 IncrementalHoareTripleChecker+Valid, 10565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:52:29,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6491 Valid, 4653 Invalid, 12863 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2298 Valid, 10565 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2022-11-20 10:52:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21383 states. [2022-11-20 10:52:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21383 to 15961. [2022-11-20 10:52:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15961 states, 12211 states have (on average 1.5952829416100238) internal successors, (19480), 12582 states have internal predecessors, (19480), 2873 states have call successors, (2873), 627 states have call predecessors, (2873), 876 states have return successors, (6886), 3055 states have call predecessors, (6886), 2868 states have call successors, (6886) [2022-11-20 10:52:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15961 states to 15961 states and 29239 transitions. [2022-11-20 10:52:37,633 INFO L78 Accepts]: Start accepts. Automaton has 15961 states and 29239 transitions. Word has length 126 [2022-11-20 10:52:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:52:37,634 INFO L495 AbstractCegarLoop]: Abstraction has 15961 states and 29239 transitions. [2022-11-20 10:52:37,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-20 10:52:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 15961 states and 29239 transitions. [2022-11-20 10:52:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 10:52:37,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:52:37,642 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:37,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:52:37,642 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:52:37,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:37,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1835465392, now seen corresponding path program 1 times [2022-11-20 10:52:37,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:37,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012740726] [2022-11-20 10:52:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:37,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:52:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:37,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:37,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:52:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 10:52:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:52:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:52:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:52:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:52:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:52:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:52:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 10:52:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:52:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 10:52:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:52:38,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:38,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012740726] [2022-11-20 10:52:38,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012740726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:38,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:38,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 10:52:38,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545866373] [2022-11-20 10:52:38,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:38,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:52:38,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:38,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:52:38,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:52:38,707 INFO L87 Difference]: Start difference. First operand 15961 states and 29239 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 10:53:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:53:19,570 INFO L93 Difference]: Finished difference Result 57484 states and 119622 transitions. [2022-11-20 10:53:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:53:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2022-11-20 10:53:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:53:20,392 INFO L225 Difference]: With dead ends: 57484 [2022-11-20 10:53:20,392 INFO L226 Difference]: Without dead ends: 41617 [2022-11-20 10:53:20,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 10:53:20,576 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 3451 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 8234 mSolverCounterSat, 1147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 3602 SdHoareTripleChecker+Invalid, 9381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1147 IncrementalHoareTripleChecker+Valid, 8234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:53:20,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3528 Valid, 3602 Invalid, 9381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1147 Valid, 8234 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-11-20 10:53:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41617 states. [2022-11-20 10:53:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41617 to 31965. [2022-11-20 10:53:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31965 states, 24536 states have (on average 1.5952885555917835) internal successors, (39142), 25223 states have internal predecessors, (39142), 5660 states have call successors, (5660), 1215 states have call predecessors, (5660), 1768 states have return successors, (14653), 6134 states have call predecessors, (14653), 5655 states have call successors, (14653) [2022-11-20 10:53:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31965 states to 31965 states and 59455 transitions. [2022-11-20 10:53:36,441 INFO L78 Accepts]: Start accepts. Automaton has 31965 states and 59455 transitions. Word has length 128 [2022-11-20 10:53:36,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:53:36,442 INFO L495 AbstractCegarLoop]: Abstraction has 31965 states and 59455 transitions. [2022-11-20 10:53:36,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 10:53:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 31965 states and 59455 transitions. [2022-11-20 10:53:36,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 10:53:36,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:53:36,452 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:53:36,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:53:36,453 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:53:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:53:36,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1639248492, now seen corresponding path program 1 times [2022-11-20 10:53:36,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:53:36,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145901220] [2022-11-20 10:53:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:36,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:53:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:53:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:36,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:53:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:36,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 10:53:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 10:53:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 10:53:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:53:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:53:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 10:53:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 10:53:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 10:53:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 10:53:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 10:53:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 10:53:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:53:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:53:37,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145901220] [2022-11-20 10:53:37,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145901220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:53:37,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38940912] [2022-11-20 10:53:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:53:37,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:53:37,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:53:37,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:53:37,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab011518-94ae-415c-ae3a-280c0c89b7c0/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:53:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:53:37,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:53:37,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:53:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:53:38,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:53:38,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38940912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:53:38,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:53:38,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2022-11-20 10:53:38,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202679469] [2022-11-20 10:53:38,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:53:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:53:38,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:53:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:53:38,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:53:38,013 INFO L87 Difference]: Start difference. First operand 31965 states and 59455 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15)