./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 --- 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-2329fc7 [2022-12-14 10:00:49,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:00:49,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:00:49,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:00:49,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:00:49,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:00:49,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:00:49,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:00:49,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:00:49,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:00:49,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:00:49,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:00:49,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:00:49,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:00:49,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:00:49,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:00:49,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:00:49,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:00:49,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:00:49,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:00:49,139 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:00:49,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:00:49,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:00:49,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:00:49,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:00:49,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:00:49,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:00:49,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:00:49,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:00:49,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:00:49,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:00:49,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:00:49,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:00:49,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:00:49,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:00:49,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:00:49,152 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:00:49,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:00:49,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:00:49,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:00:49,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:00:49,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 10:00:49,173 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:00:49,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:00:49,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:00:49,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:00:49,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:00:49,175 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:00:49,175 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:00:49,175 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:00:49,175 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:00:49,176 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:00:49,176 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:00:49,176 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:00:49,176 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:00:49,176 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:00:49,176 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:00:49,177 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:00:49,177 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:00:49,177 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:00:49,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:00:49,177 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:00:49,177 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:00:49,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:00:49,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:00:49,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:00:49,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:00:49,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:00:49,178 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:00:49,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:00:49,178 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:00:49,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:00:49,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:00:49,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:00:49,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:00:49,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:00:49,179 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:00:49,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:00:49,180 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:00:49,180 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:00:49,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:00:49,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:00:49,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:00:49,180 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_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 [2022-12-14 10:00:49,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:00:49,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:00:49,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:00:49,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:00:49,399 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:00:49,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2022-12-14 10:00:51,958 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:00:52,181 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:00:52,181 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2022-12-14 10:00:52,193 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/data/0225a7ddf/73477e5f7f184a3b85b7ec38d7ed9488/FLAG171f7c1c7 [2022-12-14 10:00:52,526 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/data/0225a7ddf/73477e5f7f184a3b85b7ec38d7ed9488 [2022-12-14 10:00:52,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:00:52,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:00:52,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:00:52,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:00:52,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:00:52,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:52,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17407b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52, skipping insertion in model container [2022-12-14 10:00:52,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:52,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:00:52,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:00:52,681 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_343bfa89-367e-4987-b052-be828d334b79/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-12-14 10:00:52,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:00:52,881 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:00:52,891 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_343bfa89-367e-4987-b052-be828d334b79/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-12-14 10:00:52,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:00:52,984 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:00:52,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52 WrapperNode [2022-12-14 10:00:52,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:00:52,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:00:52,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:00:52,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:00:52,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,034 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 806 [2022-12-14 10:00:53,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:00:53,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:00:53,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:00:53,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:00:53,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,066 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:00:53,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:00:53,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:00:53,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:00:53,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (1/1) ... [2022-12-14 10:00:53,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:00:53,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:00:53,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:00:53,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:00:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 10:00:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 10:00:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:00:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 10:00:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 10:00:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-14 10:00:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-14 10:00:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 10:00:53,133 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 10:00:53,133 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 10:00:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 10:00:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 10:00:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 10:00:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 10:00:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 10:00:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 10:00:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 10:00:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-14 10:00:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-14 10:00:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 10:00:53,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 10:00:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 10:00:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 10:00:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 10:00:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 10:00:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 10:00:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 10:00:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 10:00:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 10:00:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 10:00:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 10:00:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 10:00:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 10:00:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 10:00:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 10:00:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 10:00:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 10:00:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:00:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2022-12-14 10:00:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2022-12-14 10:00:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 10:00:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 10:00:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 10:00:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 10:00:53,136 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 10:00:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 10:00:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:00:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:00:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 10:00:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 10:00:53,268 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:00:53,271 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:00:54,031 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:00:54,443 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:00:54,443 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 10:00:54,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:00:54 BoogieIcfgContainer [2022-12-14 10:00:54,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:00:54,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:00:54,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:00:54,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:00:54,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:00:52" (1/3) ... [2022-12-14 10:00:54,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2790b771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:00:54, skipping insertion in model container [2022-12-14 10:00:54,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:00:52" (2/3) ... [2022-12-14 10:00:54,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2790b771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:00:54, skipping insertion in model container [2022-12-14 10:00:54,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:00:54" (3/3) ... [2022-12-14 10:00:54,451 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2022-12-14 10:00:54,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:00:54,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 10:00:54,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:00:54,510 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e3a6e8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:00:54,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 10:00:54,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 244 states have (on average 1.610655737704918) internal successors, (393), 267 states have internal predecessors, (393), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2022-12-14 10:00:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-14 10:00:54,525 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:54,525 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] [2022-12-14 10:00:54,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:00:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:54,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1641210281, now seen corresponding path program 1 times [2022-12-14 10:00:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:54,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552659762] [2022-12-14 10:00:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:00:54,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:54,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552659762] [2022-12-14 10:00:54,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552659762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:54,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:54,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:00:54,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606676781] [2022-12-14 10:00:54,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:54,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:00:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:54,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:00:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:00:54,841 INFO L87 Difference]: Start difference. First operand has 363 states, 244 states have (on average 1.610655737704918) internal successors, (393), 267 states have internal predecessors, (393), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-12-14 10:00:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:54,977 INFO L93 Difference]: Finished difference Result 381 states and 608 transitions. [2022-12-14 10:00:54,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:00:54,979 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 50 [2022-12-14 10:00:54,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:54,994 INFO L225 Difference]: With dead ends: 381 [2022-12-14 10:00:54,994 INFO L226 Difference]: Without dead ends: 359 [2022-12-14 10:00:54,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:00:55,001 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:55,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 539 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:00:55,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-12-14 10:00:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-12-14 10:00:55,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 242 states have (on average 1.5991735537190082) internal successors, (387), 263 states have internal predecessors, (387), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-12-14 10:00:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 570 transitions. [2022-12-14 10:00:55,072 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 570 transitions. Word has length 50 [2022-12-14 10:00:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:55,073 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 570 transitions. [2022-12-14 10:00:55,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-12-14 10:00:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 570 transitions. [2022-12-14 10:00:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 10:00:55,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:55,078 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] [2022-12-14 10:00:55,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:00:55,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:00:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:55,079 INFO L85 PathProgramCache]: Analyzing trace with hash -282413515, now seen corresponding path program 1 times [2022-12-14 10:00:55,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:55,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258252008] [2022-12-14 10:00:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:55,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:00:55,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:55,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258252008] [2022-12-14 10:00:55,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258252008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:55,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:55,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:00:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775050714] [2022-12-14 10:00:55,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:55,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:00:55,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:55,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:00:55,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:00:55,514 INFO L87 Difference]: Start difference. First operand 359 states and 570 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-14 10:00:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:57,068 INFO L93 Difference]: Finished difference Result 1163 states and 1893 transitions. [2022-12-14 10:00:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:00:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2022-12-14 10:00:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:57,076 INFO L225 Difference]: With dead ends: 1163 [2022-12-14 10:00:57,076 INFO L226 Difference]: Without dead ends: 827 [2022-12-14 10:00:57,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:00:57,081 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1179 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:57,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 920 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 10:00:57,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-12-14 10:00:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 740. [2022-12-14 10:00:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 524 states have (on average 1.6278625954198473) internal successors, (853), 554 states have internal predecessors, (853), 177 states have call successors, (177), 37 states have call predecessors, (177), 38 states have return successors, (179), 161 states have call predecessors, (179), 172 states have call successors, (179) [2022-12-14 10:00:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1209 transitions. [2022-12-14 10:00:57,146 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1209 transitions. Word has length 51 [2022-12-14 10:00:57,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:57,146 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1209 transitions. [2022-12-14 10:00:57,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-14 10:00:57,147 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1209 transitions. [2022-12-14 10:00:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 10:00:57,151 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:57,151 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] [2022-12-14 10:00:57,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:00:57,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:00:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1831932579, now seen corresponding path program 1 times [2022-12-14 10:00:57,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:57,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006636185] [2022-12-14 10:00:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:57,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:00:57,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:57,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006636185] [2022-12-14 10:00:57,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006636185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:57,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:57,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:00:57,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469296714] [2022-12-14 10:00:57,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:57,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:00:57,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:57,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:00:57,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:00:57,618 INFO L87 Difference]: Start difference. First operand 740 states and 1209 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 10:00:59,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:59,275 INFO L93 Difference]: Finished difference Result 2506 states and 4147 transitions. [2022-12-14 10:00:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:00:59,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 73 [2022-12-14 10:00:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:59,288 INFO L225 Difference]: With dead ends: 2506 [2022-12-14 10:00:59,289 INFO L226 Difference]: Without dead ends: 1790 [2022-12-14 10:00:59,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-12-14 10:00:59,295 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1646 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:59,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 1720 Invalid, 3080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 10:00:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-12-14 10:00:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1703. [2022-12-14 10:00:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1236 states have (on average 1.6472491909385114) internal successors, (2036), 1296 states have internal predecessors, (2036), 379 states have call successors, (379), 76 states have call predecessors, (379), 87 states have return successors, (406), 354 states have call predecessors, (406), 374 states have call successors, (406) [2022-12-14 10:00:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2821 transitions. [2022-12-14 10:00:59,417 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2821 transitions. Word has length 73 [2022-12-14 10:00:59,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:59,418 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2821 transitions. [2022-12-14 10:00:59,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-14 10:00:59,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2821 transitions. [2022-12-14 10:00:59,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 10:00:59,421 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:59,421 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] [2022-12-14 10:00:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:00:59,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:00:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1531135854, now seen corresponding path program 1 times [2022-12-14 10:00:59,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:59,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158907682] [2022-12-14 10:00:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:59,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:00:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:00:59,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:00:59,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158907682] [2022-12-14 10:00:59,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158907682] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:00:59,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:00:59,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:00:59,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014533102] [2022-12-14 10:00:59,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:00:59,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:00:59,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:00:59,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:00:59,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:00:59,646 INFO L87 Difference]: Start difference. First operand 1703 states and 2821 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:00:59,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:00:59,826 INFO L93 Difference]: Finished difference Result 2741 states and 4549 transitions. [2022-12-14 10:00:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:00:59,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-12-14 10:00:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:00:59,833 INFO L225 Difference]: With dead ends: 2741 [2022-12-14 10:00:59,833 INFO L226 Difference]: Without dead ends: 1743 [2022-12-14 10:00:59,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:00:59,838 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 7 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:00:59,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2117 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:00:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2022-12-14 10:00:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1727. [2022-12-14 10:00:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1254 states have (on average 1.6379585326953747) internal successors, (2054), 1314 states have internal predecessors, (2054), 379 states have call successors, (379), 76 states have call predecessors, (379), 93 states have return successors, (418), 360 states have call predecessors, (418), 374 states have call successors, (418) [2022-12-14 10:00:59,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2851 transitions. [2022-12-14 10:00:59,914 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2851 transitions. Word has length 77 [2022-12-14 10:00:59,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:00:59,914 INFO L495 AbstractCegarLoop]: Abstraction has 1727 states and 2851 transitions. [2022-12-14 10:00:59,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-14 10:00:59,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2851 transitions. [2022-12-14 10:00:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 10:00:59,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:00:59,916 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] [2022-12-14 10:00:59,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:00:59,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:00:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:00:59,917 INFO L85 PathProgramCache]: Analyzing trace with hash 105924602, now seen corresponding path program 1 times [2022-12-14 10:00:59,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:00:59,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164935244] [2022-12-14 10:00:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:00:59,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:00:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:01:00,151 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:00,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164935244] [2022-12-14 10:01:00,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164935244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:00,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:01:00,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 10:01:00,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785966428] [2022-12-14 10:01:00,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:00,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:01:00,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:00,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:01:00,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:01:00,153 INFO L87 Difference]: Start difference. First operand 1727 states and 2851 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-14 10:01:01,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:01,884 INFO L93 Difference]: Finished difference Result 3895 states and 6435 transitions. [2022-12-14 10:01:01,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:01:01,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 81 [2022-12-14 10:01:01,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:01,894 INFO L225 Difference]: With dead ends: 3895 [2022-12-14 10:01:01,895 INFO L226 Difference]: Without dead ends: 2681 [2022-12-14 10:01:01,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:01:01,900 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 2821 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 1261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2969 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 3405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1261 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:01,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2969 Valid, 1176 Invalid, 3405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1261 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 10:01:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-12-14 10:01:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2515. [2022-12-14 10:01:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 1799 states have (on average 1.595330739299611) internal successors, (2870), 1890 states have internal predecessors, (2870), 563 states have call successors, (563), 123 states have call predecessors, (563), 152 states have return successors, (638), 536 states have call predecessors, (638), 558 states have call successors, (638) [2022-12-14 10:01:02,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 4071 transitions. [2022-12-14 10:01:02,014 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 4071 transitions. Word has length 81 [2022-12-14 10:01:02,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:02,014 INFO L495 AbstractCegarLoop]: Abstraction has 2515 states and 4071 transitions. [2022-12-14 10:01:02,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-12-14 10:01:02,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 4071 transitions. [2022-12-14 10:01:02,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 10:01:02,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:02,016 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] [2022-12-14 10:01:02,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:01:02,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:01:02,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:02,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1939626325, now seen corresponding path program 1 times [2022-12-14 10:01:02,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:02,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771833265] [2022-12-14 10:01:02,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:02,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:02,254 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:01:02,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:02,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771833265] [2022-12-14 10:01:02,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771833265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:02,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:01:02,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 10:01:02,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454577913] [2022-12-14 10:01:02,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:02,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:01:02,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:02,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:01:02,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:01:02,256 INFO L87 Difference]: Start difference. First operand 2515 states and 4071 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-14 10:01:04,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:04,238 INFO L93 Difference]: Finished difference Result 7368 states and 11993 transitions. [2022-12-14 10:01:04,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 10:01:04,239 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 83 [2022-12-14 10:01:04,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:04,254 INFO L225 Difference]: With dead ends: 7368 [2022-12-14 10:01:04,255 INFO L226 Difference]: Without dead ends: 4876 [2022-12-14 10:01:04,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-12-14 10:01:04,263 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 1363 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 3757 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 4410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 3757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:04,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1994 Invalid, 4410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 3757 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 10:01:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2022-12-14 10:01:04,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 4618. [2022-12-14 10:01:04,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 3235 states have (on average 1.5826893353941267) internal successors, (5120), 3416 states have internal predecessors, (5120), 1121 states have call successors, (1121), 201 states have call predecessors, (1121), 261 states have return successors, (1257), 1077 states have call predecessors, (1257), 1116 states have call successors, (1257) [2022-12-14 10:01:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 7498 transitions. [2022-12-14 10:01:04,483 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 7498 transitions. Word has length 83 [2022-12-14 10:01:04,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:04,484 INFO L495 AbstractCegarLoop]: Abstraction has 4618 states and 7498 transitions. [2022-12-14 10:01:04,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-14 10:01:04,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 7498 transitions. [2022-12-14 10:01:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 10:01:04,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:04,485 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] [2022-12-14 10:01:04,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 10:01:04,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:01:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:04,486 INFO L85 PathProgramCache]: Analyzing trace with hash 670350030, now seen corresponding path program 1 times [2022-12-14 10:01:04,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:04,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46839506] [2022-12-14 10:01:04,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:04,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:01:04,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:04,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46839506] [2022-12-14 10:01:04,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46839506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:04,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:01:04,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 10:01:04,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329380867] [2022-12-14 10:01:04,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:04,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 10:01:04,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:04,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 10:01:04,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-14 10:01:04,809 INFO L87 Difference]: Start difference. First operand 4618 states and 7498 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-14 10:01:07,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:07,061 INFO L93 Difference]: Finished difference Result 9451 states and 15584 transitions. [2022-12-14 10:01:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 10:01:07,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 84 [2022-12-14 10:01:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:07,077 INFO L225 Difference]: With dead ends: 9451 [2022-12-14 10:01:07,077 INFO L226 Difference]: Without dead ends: 4808 [2022-12-14 10:01:07,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 10:01:07,091 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2051 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 5626 mSolverCounterSat, 1169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 6795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1169 IncrementalHoareTripleChecker+Valid, 5626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:07,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 3264 Invalid, 6795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1169 Valid, 5626 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-14 10:01:07,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2022-12-14 10:01:07,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4626. [2022-12-14 10:01:07,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 3239 states have (on average 1.54492127199753) internal successors, (5004), 3420 states have internal predecessors, (5004), 1121 states have call successors, (1121), 205 states have call predecessors, (1121), 265 states have return successors, (1257), 1077 states have call predecessors, (1257), 1116 states have call successors, (1257) [2022-12-14 10:01:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 7382 transitions. [2022-12-14 10:01:07,366 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 7382 transitions. Word has length 84 [2022-12-14 10:01:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:07,366 INFO L495 AbstractCegarLoop]: Abstraction has 4626 states and 7382 transitions. [2022-12-14 10:01:07,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-12-14 10:01:07,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 7382 transitions. [2022-12-14 10:01:07,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 10:01:07,368 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:07,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:01:07,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:01:07,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:01:07,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:07,368 INFO L85 PathProgramCache]: Analyzing trace with hash -574153507, now seen corresponding path program 1 times [2022-12-14 10:01:07,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:07,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116682526] [2022-12-14 10:01:07,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:07,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 10:01:07,633 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:07,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116682526] [2022-12-14 10:01:07,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116682526] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:07,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:01:07,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:01:07,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028999291] [2022-12-14 10:01:07,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:07,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:01:07,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:01:07,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:01:07,635 INFO L87 Difference]: Start difference. First operand 4626 states and 7382 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 10:01:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:08,972 INFO L93 Difference]: Finished difference Result 9171 states and 14674 transitions. [2022-12-14 10:01:08,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 10:01:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 86 [2022-12-14 10:01:08,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:08,989 INFO L225 Difference]: With dead ends: 9171 [2022-12-14 10:01:08,990 INFO L226 Difference]: Without dead ends: 5174 [2022-12-14 10:01:09,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:01:09,000 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 931 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:09,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1587 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 10:01:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5174 states. [2022-12-14 10:01:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5174 to 4716. [2022-12-14 10:01:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4716 states, 3299 states have (on average 1.5392543194907549) internal successors, (5078), 3494 states have internal predecessors, (5078), 1123 states have call successors, (1123), 221 states have call predecessors, (1123), 293 states have return successors, (1295), 1077 states have call predecessors, (1295), 1118 states have call successors, (1295) [2022-12-14 10:01:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 7496 transitions. [2022-12-14 10:01:09,236 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 7496 transitions. Word has length 86 [2022-12-14 10:01:09,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:09,236 INFO L495 AbstractCegarLoop]: Abstraction has 4716 states and 7496 transitions. [2022-12-14 10:01:09,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-14 10:01:09,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 7496 transitions. [2022-12-14 10:01:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 10:01:09,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:09,238 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] [2022-12-14 10:01:09,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:01:09,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:01:09,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:09,238 INFO L85 PathProgramCache]: Analyzing trace with hash 10767640, now seen corresponding path program 1 times [2022-12-14 10:01:09,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:09,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502884836] [2022-12-14 10:01:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:09,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 10:01:09,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:09,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502884836] [2022-12-14 10:01:09,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502884836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:09,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:01:09,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:01:09,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530161849] [2022-12-14 10:01:09,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:09,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:01:09,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:09,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:01:09,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:01:09,389 INFO L87 Difference]: Start difference. First operand 4716 states and 7496 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 10:01:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:09,906 INFO L93 Difference]: Finished difference Result 4818 states and 7662 transitions. [2022-12-14 10:01:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:01:09,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 90 [2022-12-14 10:01:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:09,923 INFO L225 Difference]: With dead ends: 4818 [2022-12-14 10:01:09,923 INFO L226 Difference]: Without dead ends: 4803 [2022-12-14 10:01:09,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:01:09,926 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 652 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:09,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1389 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:01:09,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2022-12-14 10:01:10,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4722. [2022-12-14 10:01:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 3305 states have (on average 1.5382753403933433) internal successors, (5084), 3500 states have internal predecessors, (5084), 1123 states have call successors, (1123), 221 states have call predecessors, (1123), 293 states have return successors, (1295), 1077 states have call predecessors, (1295), 1118 states have call successors, (1295) [2022-12-14 10:01:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 7502 transitions. [2022-12-14 10:01:10,207 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 7502 transitions. Word has length 90 [2022-12-14 10:01:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:10,208 INFO L495 AbstractCegarLoop]: Abstraction has 4722 states and 7502 transitions. [2022-12-14 10:01:10,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-14 10:01:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 7502 transitions. [2022-12-14 10:01:10,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 10:01:10,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:10,209 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] [2022-12-14 10:01:10,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 10:01:10,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:01:10,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1727320464, now seen corresponding path program 1 times [2022-12-14 10:01:10,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:10,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018610265] [2022-12-14 10:01:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:10,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 10:01:10,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:10,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018610265] [2022-12-14 10:01:10,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018610265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:01:10,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:01:10,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 10:01:10,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859992256] [2022-12-14 10:01:10,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:01:10,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 10:01:10,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:01:10,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 10:01:10,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:01:10,523 INFO L87 Difference]: Start difference. First operand 4722 states and 7502 transitions. Second operand has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-14 10:01:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:01:13,347 INFO L93 Difference]: Finished difference Result 5298 states and 8396 transitions. [2022-12-14 10:01:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 10:01:13,347 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 95 [2022-12-14 10:01:13,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:01:13,361 INFO L225 Difference]: With dead ends: 5298 [2022-12-14 10:01:13,362 INFO L226 Difference]: Without dead ends: 5281 [2022-12-14 10:01:13,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 10:01:13,364 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 2571 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 7237 mSolverCounterSat, 1451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 3707 SdHoareTripleChecker+Invalid, 8688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1451 IncrementalHoareTripleChecker+Valid, 7237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:01:13,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2594 Valid, 3707 Invalid, 8688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1451 Valid, 7237 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 10:01:13,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2022-12-14 10:01:13,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5004. [2022-12-14 10:01:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 3531 states have (on average 1.5465873690172756) internal successors, (5461), 3724 states have internal predecessors, (5461), 1142 states have call successors, (1142), 259 states have call predecessors, (1142), 330 states have return successors, (1318), 1097 states have call predecessors, (1318), 1137 states have call successors, (1318) [2022-12-14 10:01:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 7921 transitions. [2022-12-14 10:01:13,646 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 7921 transitions. Word has length 95 [2022-12-14 10:01:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:01:13,646 INFO L495 AbstractCegarLoop]: Abstraction has 5004 states and 7921 transitions. [2022-12-14 10:01:13,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-12-14 10:01:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 7921 transitions. [2022-12-14 10:01:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 10:01:13,648 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:01:13,648 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 10:01:13,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 10:01:13,648 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:01:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:01:13,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1773970969, now seen corresponding path program 1 times [2022-12-14 10:01:13,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:01:13,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875702478] [2022-12-14 10:01:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:13,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:01:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 10:01:14,262 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:01:14,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875702478] [2022-12-14 10:01:14,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875702478] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:01:14,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870604544] [2022-12-14 10:01:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:01:14,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:01:14,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:01:14,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:01:14,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:01:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:01:14,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 10:01:14,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:01:16,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:01:16,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:01:18,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:01:18,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870604544] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:01:18,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2045273511] [2022-12-14 10:01:18,259 INFO L159 IcfgInterpreter]: Started Sifa with 93 locations of interest [2022-12-14 10:01:18,260 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:01:18,263 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:01:18,268 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:01:18,268 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:01:22,840 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-12-14 10:02:18,794 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-12-14 10:02:24,673 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-12-14 10:02:24,742 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-12-14 10:02:28,260 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__weight with input of size 577 for LOIs [2022-12-14 10:02:29,873 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 89 for LOIs [2022-12-14 10:02:30,082 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 52 for LOIs [2022-12-14 10:02:30,102 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 450 for LOIs [2022-12-14 10:02:30,360 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 85 for LOIs [2022-12-14 10:02:30,457 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 103 for LOIs [2022-12-14 10:02:30,476 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-12-14 10:02:33,013 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-12-14 10:03:53,422 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-12-14 10:03:53,917 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:04:04,550 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 664 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:04:11,166 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 704 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:04:32,987 WARN L233 SmtUtils]: Spent 11.30s on a formula simplification. DAG size of input: 837 DAG size of output: 688 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:04:45,702 WARN L233 SmtUtils]: Spent 11.65s on a formula simplification. DAG size of input: 912 DAG size of output: 813 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:05:33,571 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 533 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:05:39,902 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 545 DAG size of output: 490 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:05:47,754 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 547 DAG size of output: 492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:05:54,390 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 549 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:01,828 WARN L233 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 551 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:09,888 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 553 DAG size of output: 498 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:17,529 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 555 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:24,913 WARN L233 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 526 DAG size of output: 490 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:32,526 WARN L233 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 528 DAG size of output: 489 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:39,723 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 531 DAG size of output: 492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:46,126 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 450 DAG size of output: 437 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:52,166 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 454 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:06:59,809 WARN L233 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 540 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:07:06,799 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 540 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:07:14,662 WARN L233 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 543 DAG size of output: 493 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:07:22,173 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 546 DAG size of output: 493 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:07:29,719 WARN L233 SmtUtils]: Spent 6.81s on a formula simplification. DAG size of input: 552 DAG size of output: 499 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:07:37,903 WARN L233 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 568 DAG size of output: 509 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:07:37,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2045273511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:07:37,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:07:37,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [11, 12, 12] total 90 [2022-12-14 10:07:37,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969078637] [2022-12-14 10:07:37,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:07:37,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-12-14 10:07:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:07:37,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-12-14 10:07:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=7396, Unknown=0, NotChecked=0, Total=8010 [2022-12-14 10:07:37,909 INFO L87 Difference]: Start difference. First operand 5004 states and 7921 transitions. Second operand has 64 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 41 states have internal predecessors, (60), 18 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-12-14 10:07:44,471 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 646 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:07:50,188 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 658 DAG size of output: 607 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:08:15,136 WARN L233 SmtUtils]: Spent 6.67s on a formula simplification. DAG size of input: 810 DAG size of output: 584 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:10:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:27,455 INFO L93 Difference]: Finished difference Result 11803 states and 18745 transitions. [2022-12-14 10:10:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-14 10:10:27,457 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 41 states have internal predecessors, (60), 18 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) Word has length 102 [2022-12-14 10:10:27,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:27,476 INFO L225 Difference]: With dead ends: 11803 [2022-12-14 10:10:27,476 INFO L226 Difference]: Without dead ends: 6826 [2022-12-14 10:10:27,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 226 SyntacticMatches, 6 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3923 ImplicationChecksByTransitivity, 283.0s TimeCoverageRelationStatistics Valid=770, Invalid=9736, Unknown=0, NotChecked=0, Total=10506 [2022-12-14 10:10:27,490 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 956 mSDsluCounter, 10825 mSDsCounter, 0 mSdLazyCounter, 31675 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 11569 SdHoareTripleChecker+Invalid, 31800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 31675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:27,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 11569 Invalid, 31800 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [125 Valid, 31675 Invalid, 0 Unknown, 0 Unchecked, 108.9s Time] [2022-12-14 10:10:27,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2022-12-14 10:10:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6691. [2022-12-14 10:10:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6691 states, 4739 states have (on average 1.5503270732221988) internal successors, (7347), 4996 states have internal predecessors, (7347), 1522 states have call successors, (1522), 343 states have call predecessors, (1522), 429 states have return successors, (1733), 1461 states have call predecessors, (1733), 1517 states have call successors, (1733) [2022-12-14 10:10:29,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6691 states to 6691 states and 10602 transitions. [2022-12-14 10:10:29,030 INFO L78 Accepts]: Start accepts. Automaton has 6691 states and 10602 transitions. Word has length 102 [2022-12-14 10:10:29,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:29,030 INFO L495 AbstractCegarLoop]: Abstraction has 6691 states and 10602 transitions. [2022-12-14 10:10:29,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 41 states have internal predecessors, (60), 18 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-12-14 10:10:29,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6691 states and 10602 transitions. [2022-12-14 10:10:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-14 10:10:29,032 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:29,032 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:10:29,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:10:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 10:10:29,233 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:10:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash -137327527, now seen corresponding path program 1 times [2022-12-14 10:10:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:29,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750295967] [2022-12-14 10:10:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:29,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 10:10:29,518 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:29,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750295967] [2022-12-14 10:10:29,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750295967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:29,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:10:29,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:10:29,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447879619] [2022-12-14 10:10:29,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:29,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 10:10:29,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:29,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 10:10:29,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 10:10:29,520 INFO L87 Difference]: Start difference. First operand 6691 states and 10602 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 6 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-14 10:10:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:33,057 INFO L93 Difference]: Finished difference Result 12015 states and 19268 transitions. [2022-12-14 10:10:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:10:33,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 6 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) Word has length 104 [2022-12-14 10:10:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:33,082 INFO L225 Difference]: With dead ends: 12015 [2022-12-14 10:10:33,082 INFO L226 Difference]: Without dead ends: 7692 [2022-12-14 10:10:33,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-12-14 10:10:33,091 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 1024 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 3155 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 3155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:33,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1830 Invalid, 3531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 3155 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 10:10:33,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7692 states. [2022-12-14 10:10:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7692 to 6691. [2022-12-14 10:10:34,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6691 states, 4739 states have (on average 1.5503270732221988) internal successors, (7347), 4996 states have internal predecessors, (7347), 1522 states have call successors, (1522), 343 states have call predecessors, (1522), 429 states have return successors, (1733), 1461 states have call predecessors, (1733), 1517 states have call successors, (1733) [2022-12-14 10:10:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6691 states to 6691 states and 10602 transitions. [2022-12-14 10:10:34,655 INFO L78 Accepts]: Start accepts. Automaton has 6691 states and 10602 transitions. Word has length 104 [2022-12-14 10:10:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:34,655 INFO L495 AbstractCegarLoop]: Abstraction has 6691 states and 10602 transitions. [2022-12-14 10:10:34,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 6 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-14 10:10:34,655 INFO L276 IsEmpty]: Start isEmpty. Operand 6691 states and 10602 transitions. [2022-12-14 10:10:34,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 10:10:34,657 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:34,657 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 10:10:34,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 10:10:34,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:10:34,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:34,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1234702208, now seen corresponding path program 1 times [2022-12-14 10:10:34,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:34,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036239938] [2022-12-14 10:10:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:34,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 10:10:34,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:34,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036239938] [2022-12-14 10:10:34,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036239938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:34,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:10:34,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:10:34,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705932578] [2022-12-14 10:10:34,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:34,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:10:34,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:10:34,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:10:34,732 INFO L87 Difference]: Start difference. First operand 6691 states and 10602 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 10:10:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:37,455 INFO L93 Difference]: Finished difference Result 18345 states and 29219 transitions. [2022-12-14 10:10:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:10:37,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 103 [2022-12-14 10:10:37,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:37,492 INFO L225 Difference]: With dead ends: 18345 [2022-12-14 10:10:37,492 INFO L226 Difference]: Without dead ends: 12493 [2022-12-14 10:10:37,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:10:37,504 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 513 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:37,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 1512 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:10:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12493 states. [2022-12-14 10:10:40,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12493 to 12491. [2022-12-14 10:10:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 8878 states have (on average 1.548884883982879) internal successors, (13751), 9348 states have internal predecessors, (13751), 2801 states have call successors, (2801), 642 states have call predecessors, (2801), 811 states have return successors, (3280), 2698 states have call predecessors, (3280), 2796 states have call successors, (3280) [2022-12-14 10:10:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 19832 transitions. [2022-12-14 10:10:40,158 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 19832 transitions. Word has length 103 [2022-12-14 10:10:40,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:40,158 INFO L495 AbstractCegarLoop]: Abstraction has 12491 states and 19832 transitions. [2022-12-14 10:10:40,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 10:10:40,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 19832 transitions. [2022-12-14 10:10:40,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 10:10:40,160 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:40,160 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 10:10:40,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 10:10:40,160 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:10:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:40,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1510476000, now seen corresponding path program 1 times [2022-12-14 10:10:40,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:40,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777482680] [2022-12-14 10:10:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:40,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 10:10:40,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:40,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777482680] [2022-12-14 10:10:40,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777482680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:10:40,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:10:40,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:10:40,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585539139] [2022-12-14 10:10:40,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:10:40,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:10:40,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:10:40,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:10:40,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:10:40,326 INFO L87 Difference]: Start difference. First operand 12491 states and 19832 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-14 10:10:46,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:10:46,050 INFO L93 Difference]: Finished difference Result 33721 states and 54234 transitions. [2022-12-14 10:10:46,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:10:46,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 103 [2022-12-14 10:10:46,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:10:46,110 INFO L225 Difference]: With dead ends: 33721 [2022-12-14 10:10:46,110 INFO L226 Difference]: Without dead ends: 21432 [2022-12-14 10:10:46,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:10:46,138 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1239 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 1741 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 1741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:10:46,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 911 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 1741 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 10:10:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21432 states. [2022-12-14 10:10:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21432 to 20184. [2022-12-14 10:10:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20184 states, 14492 states have (on average 1.5485785260833564) internal successors, (22442), 15263 states have internal predecessors, (22442), 4381 states have call successors, (4381), 1021 states have call predecessors, (4381), 1310 states have return successors, (5340), 4175 states have call predecessors, (5340), 4376 states have call successors, (5340) [2022-12-14 10:10:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20184 states to 20184 states and 32163 transitions. [2022-12-14 10:10:50,359 INFO L78 Accepts]: Start accepts. Automaton has 20184 states and 32163 transitions. Word has length 103 [2022-12-14 10:10:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:10:50,359 INFO L495 AbstractCegarLoop]: Abstraction has 20184 states and 32163 transitions. [2022-12-14 10:10:50,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 4 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-14 10:10:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 20184 states and 32163 transitions. [2022-12-14 10:10:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 10:10:50,361 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:10:50,361 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-12-14 10:10:50,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 10:10:50,361 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 10:10:50,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:10:50,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1439025408, now seen corresponding path program 1 times [2022-12-14 10:10:50,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:10:50,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610832624] [2022-12-14 10:10:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:50,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:10:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 10:10:50,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:10:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610832624] [2022-12-14 10:10:50,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610832624] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:10:50,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726572504] [2022-12-14 10:10:50,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:10:50,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:10:50,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:10:50,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:10:50,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343bfa89-367e-4987-b052-be828d334b79/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 10:10:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:10:51,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 2047 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-14 10:10:51,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:10:52,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 10:10:52,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:10:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 10:10:53,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726572504] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:10:53,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [257105894] [2022-12-14 10:10:53,928 INFO L159 IcfgInterpreter]: Started Sifa with 94 locations of interest [2022-12-14 10:10:53,928 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 10:10:53,929 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 10:10:53,929 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 10:10:53,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 10:10:58,146 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-12-14 10:11:50,728 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-12-14 10:11:56,917 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-12-14 10:11:56,986 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-12-14 10:12:00,492 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__weight with input of size 577 for LOIs [2022-12-14 10:12:02,141 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 89 for LOIs [2022-12-14 10:12:02,347 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 53 for LOIs [2022-12-14 10:12:02,359 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 444 for LOIs [2022-12-14 10:12:02,608 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 85 for LOIs [2022-12-14 10:12:02,704 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 103 for LOIs [2022-12-14 10:12:02,723 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-12-14 10:12:05,313 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-12-14 10:13:09,149 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-12-14 10:13:09,642 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 10:13:20,378 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 664 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:13:27,130 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 704 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:13:48,667 WARN L233 SmtUtils]: Spent 12.28s on a formula simplification. DAG size of input: 837 DAG size of output: 688 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:14:08,930 WARN L233 SmtUtils]: Spent 18.27s on a formula simplification. DAG size of input: 1004 DAG size of output: 789 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)