./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/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_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/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_89deab8b-39cb-4ff7-903d-119bfcbbe235/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 d29c49d66a80c5cce6b00f5730e0d825d56678e7df63108e14ba577a66cb87d7 --- 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 13:54:41,152 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:54:41,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:54:41,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:54:41,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:54:41,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:54:41,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:54:41,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:54:41,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:54:41,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:54:41,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:54:41,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:54:41,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:54:41,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:54:41,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:54:41,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:54:41,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:54:41,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:54:41,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:54:41,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:54:41,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:54:41,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:54:41,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:54:41,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:54:41,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:54:41,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:54:41,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:54:41,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:54:41,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:54:41,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:54:41,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:54:41,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:54:41,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:54:41,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:54:41,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:54:41,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:54:41,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:54:41,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:54:41,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:54:41,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:54:41,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:54:41,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:54:41,226 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:54:41,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:54:41,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:54:41,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:54:41,227 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:54:41,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:54:41,227 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:54:41,227 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:54:41,227 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:54:41,227 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:54:41,228 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:54:41,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:54:41,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:54:41,228 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:54:41,228 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:54:41,228 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:54:41,229 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:54:41,229 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:54:41,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:54:41,229 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:54:41,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:54:41,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:54:41,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:54:41,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:54:41,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:54:41,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:54:41,230 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:54:41,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:54:41,231 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:54:41,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:54:41,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:54:41,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:54:41,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:54:41,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:54:41,232 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:54:41,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:54:41,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:54:41,232 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:54:41,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:54:41,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:54:41,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:54:41,232 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_89deab8b-39cb-4ff7-903d-119bfcbbe235/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d29c49d66a80c5cce6b00f5730e0d825d56678e7df63108e14ba577a66cb87d7 [2022-12-14 13:54:41,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:54:41,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:54:41,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:54:41,436 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:54:41,436 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:54:41,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c [2022-12-14 13:54:44,058 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:54:44,322 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:54:44,322 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c [2022-12-14 13:54:44,337 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/data/14de51fad/8231ecb08cc94f9b8452f6b19413b2ca/FLAG2bab1dfeb [2022-12-14 13:54:44,348 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/data/14de51fad/8231ecb08cc94f9b8452f6b19413b2ca [2022-12-14 13:54:44,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:54:44,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:54:44,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:54:44,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:54:44,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:54:44,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c93359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44, skipping insertion in model container [2022-12-14 13:54:44,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:54:44,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:54:44,517 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_89deab8b-39cb-4ff7-903d-119bfcbbe235/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c[4316,4329] [2022-12-14 13:54:44,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:54:44,711 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:54:44,728 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_89deab8b-39cb-4ff7-903d-119bfcbbe235/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c[4316,4329] [2022-12-14 13:54:44,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:54:44,854 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:54:44,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44 WrapperNode [2022-12-14 13:54:44,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:54:44,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:54:44,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:54:44,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:54:44,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,926 INFO L138 Inliner]: procedures = 99, calls = 356, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 970 [2022-12-14 13:54:44,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:54:44,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:54:44,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:54:44,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:54:44,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,990 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:44,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:54:44,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:54:44,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:54:44,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:54:45,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (1/1) ... [2022-12-14 13:54:45,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:54:45,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:54:45,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:54:45,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:54:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-14 13:54:45,050 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-14 13:54:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 13:54:45,050 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 13:54:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 13:54:45,050 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 13:54:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-12-14 13:54:45,050 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-12-14 13:54:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 13:54:45,050 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 13:54:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 13:54:45,050 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 13:54:45,050 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 13:54:45,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 13:54:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-14 13:54:45,051 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-14 13:54:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-12-14 13:54:45,051 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-12-14 13:54:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 13:54:45,051 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 13:54:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 13:54:45,051 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 13:54:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 13:54:45,051 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 13:54:45,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:54:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-12-14 13:54:45,052 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-12-14 13:54:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 13:54:45,052 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 13:54:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-14 13:54:45,052 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-14 13:54:45,052 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 13:54:45,052 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 13:54:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 13:54:45,053 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 13:54:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-14 13:54:45,053 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-14 13:54:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 13:54:45,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 13:54:45,053 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 13:54:45,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 13:54:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 13:54:45,054 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 13:54:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 13:54:45,054 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 13:54:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 13:54:45,054 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 13:54:45,054 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 13:54:45,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 13:54:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 13:54:45,055 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 13:54:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:54:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 13:54:45,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 13:54:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:54:45,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:54:45,055 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 13:54:45,056 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 13:54:45,056 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-12-14 13:54:45,056 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-12-14 13:54:45,181 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:54:45,183 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:54:45,982 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:54:46,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:54:46,630 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 13:54:46,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:54:46 BoogieIcfgContainer [2022-12-14 13:54:46,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:54:46,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:54:46,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:54:46,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:54:46,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:54:44" (1/3) ... [2022-12-14 13:54:46,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c10fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:54:46, skipping insertion in model container [2022-12-14 13:54:46,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:54:44" (2/3) ... [2022-12-14 13:54:46,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c10fdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:54:46, skipping insertion in model container [2022-12-14 13:54:46,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:54:46" (3/3) ... [2022-12-14 13:54:46,639 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2022-12-14 13:54:46,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:54:46,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:54:46,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:54:46,699 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;@f58939, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:54:46,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:54:46,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 413 states, 275 states have (on average 1.5672727272727274) internal successors, (431), 298 states have internal predecessors, (431), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) [2022-12-14 13:54:46,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 13:54:46,713 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:54:46,713 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] [2022-12-14 13:54:46,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:54:46,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:54:46,718 INFO L85 PathProgramCache]: Analyzing trace with hash -696518389, now seen corresponding path program 1 times [2022-12-14 13:54:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:54:46,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934353015] [2022-12-14 13:54:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:46,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:54:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:47,226 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 13:54:47,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:54:47,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934353015] [2022-12-14 13:54:47,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934353015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:54:47,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:54:47,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 13:54:47,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523271644] [2022-12-14 13:54:47,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:54:47,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:54:47,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:54:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:54:47,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:54:47,257 INFO L87 Difference]: Start difference. First operand has 413 states, 275 states have (on average 1.5672727272727274) internal successors, (431), 298 states have internal predecessors, (431), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 13:54:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:54:48,986 INFO L93 Difference]: Finished difference Result 1329 states and 2129 transitions. [2022-12-14 13:54:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:54:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2022-12-14 13:54:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:54:49,002 INFO L225 Difference]: With dead ends: 1329 [2022-12-14 13:54:49,002 INFO L226 Difference]: Without dead ends: 933 [2022-12-14 13:54:49,015 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 13:54:49,019 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1701 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:54:49,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1775 Valid, 996 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 13:54:49,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-12-14 13:54:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 846. [2022-12-14 13:54:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 589 states have (on average 1.5823429541595926) internal successors, (932), 619 states have internal predecessors, (932), 207 states have call successors, (207), 48 states have call predecessors, (207), 49 states have return successors, (209), 191 states have call predecessors, (209), 202 states have call successors, (209) [2022-12-14 13:54:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1348 transitions. [2022-12-14 13:54:49,142 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1348 transitions. Word has length 54 [2022-12-14 13:54:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:54:49,143 INFO L495 AbstractCegarLoop]: Abstraction has 846 states and 1348 transitions. [2022-12-14 13:54:49,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 13:54:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1348 transitions. [2022-12-14 13:54:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 13:54:49,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:54:49,154 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:49,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:54:49,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:54:49,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:54:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1573382313, now seen corresponding path program 1 times [2022-12-14 13:54:49,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:54:49,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353755498] [2022-12-14 13:54:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:49,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:54:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:54:49,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:54:49,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353755498] [2022-12-14 13:54:49,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353755498] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:54:49,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:54:49,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 13:54:49,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711224497] [2022-12-14 13:54:49,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:54:49,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 13:54:49,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:54:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 13:54:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-14 13:54:49,704 INFO L87 Difference]: Start difference. First operand 846 states and 1348 transitions. Second operand has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 13:54:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:54:51,992 INFO L93 Difference]: Finished difference Result 2496 states and 3993 transitions. [2022-12-14 13:54:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 13:54:51,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 98 [2022-12-14 13:54:51,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:54:52,001 INFO L225 Difference]: With dead ends: 2496 [2022-12-14 13:54:52,001 INFO L226 Difference]: Without dead ends: 1673 [2022-12-14 13:54:52,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-12-14 13:54:52,006 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 1065 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 5388 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 5821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 5388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:54:52,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 2829 Invalid, 5821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 5388 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 13:54:52,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2022-12-14 13:54:52,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1655. [2022-12-14 13:54:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1146 states have (on average 1.568062827225131) internal successors, (1797), 1197 states have internal predecessors, (1797), 413 states have call successors, (413), 84 states have call predecessors, (413), 95 states have return successors, (432), 395 states have call predecessors, (432), 408 states have call successors, (432) [2022-12-14 13:54:52,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2642 transitions. [2022-12-14 13:54:52,098 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2642 transitions. Word has length 98 [2022-12-14 13:54:52,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:54:52,098 INFO L495 AbstractCegarLoop]: Abstraction has 1655 states and 2642 transitions. [2022-12-14 13:54:52,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 13:54:52,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2642 transitions. [2022-12-14 13:54:52,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 13:54:52,102 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:54:52,102 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:52,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:54:52,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:54:52,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:54:52,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1549239680, now seen corresponding path program 1 times [2022-12-14 13:54:52,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:54:52,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360146947] [2022-12-14 13:54:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:52,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:54:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:54:52,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:54:52,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360146947] [2022-12-14 13:54:52,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360146947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:54:52,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:54:52,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 13:54:52,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460888345] [2022-12-14 13:54:52,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:54:52,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:54:52,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:54:52,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:54:52,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:54:52,661 INFO L87 Difference]: Start difference. First operand 1655 states and 2642 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 13:54:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:54:54,386 INFO L93 Difference]: Finished difference Result 4274 states and 6838 transitions. [2022-12-14 13:54:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:54:54,387 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 99 [2022-12-14 13:54:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:54:54,402 INFO L225 Difference]: With dead ends: 4274 [2022-12-14 13:54:54,402 INFO L226 Difference]: Without dead ends: 2644 [2022-12-14 13:54:54,407 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 13:54:54,408 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1228 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 13:54:54,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1661 Invalid, 3211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 13:54:54,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2022-12-14 13:54:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2553. [2022-12-14 13:54:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 1780 states have (on average 1.5719101123595505) internal successors, (2798), 1858 states have internal predecessors, (2798), 615 states have call successors, (615), 138 states have call predecessors, (615), 157 states have return successors, (660), 589 states have call predecessors, (660), 610 states have call successors, (660) [2022-12-14 13:54:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 4073 transitions. [2022-12-14 13:54:54,542 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 4073 transitions. Word has length 99 [2022-12-14 13:54:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:54:54,543 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 4073 transitions. [2022-12-14 13:54:54,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 13:54:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 4073 transitions. [2022-12-14 13:54:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 13:54:54,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:54:54,547 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:54,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:54:54,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:54:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:54:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash 964450111, now seen corresponding path program 1 times [2022-12-14 13:54:54,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:54:54,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088337790] [2022-12-14 13:54:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:54,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:54:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:54:54,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:54:54,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088337790] [2022-12-14 13:54:54,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088337790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:54:54,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:54:54,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 13:54:54,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311820270] [2022-12-14 13:54:54,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:54:54,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 13:54:54,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:54:54,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 13:54:54,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 13:54:54,761 INFO L87 Difference]: Start difference. First operand 2553 states and 4073 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 13:54:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:54:55,333 INFO L93 Difference]: Finished difference Result 2654 states and 4241 transitions. [2022-12-14 13:54:55,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:54:55,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 103 [2022-12-14 13:54:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:54:55,351 INFO L225 Difference]: With dead ends: 2654 [2022-12-14 13:54:55,351 INFO L226 Difference]: Without dead ends: 2639 [2022-12-14 13:54:55,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 13:54:55,355 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 729 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:54:55,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1964 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 13:54:55,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-12-14 13:54:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2559. [2022-12-14 13:54:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 1786 states have (on average 1.5699888017917134) internal successors, (2804), 1864 states have internal predecessors, (2804), 615 states have call successors, (615), 138 states have call predecessors, (615), 157 states have return successors, (660), 589 states have call predecessors, (660), 610 states have call successors, (660) [2022-12-14 13:54:55,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 4079 transitions. [2022-12-14 13:54:55,567 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 4079 transitions. Word has length 103 [2022-12-14 13:54:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:54:55,567 INFO L495 AbstractCegarLoop]: Abstraction has 2559 states and 4079 transitions. [2022-12-14 13:54:55,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 13:54:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 4079 transitions. [2022-12-14 13:54:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 13:54:55,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:54:55,571 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:55,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 13:54:55,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:54:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:54:55,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2119991849, now seen corresponding path program 1 times [2022-12-14 13:54:55,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:54:55,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3627322] [2022-12-14 13:54:55,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:55,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:54:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:55,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 13:54:55,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:54:55,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3627322] [2022-12-14 13:54:55,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3627322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:54:55,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:54:55,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 13:54:55,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828696796] [2022-12-14 13:54:55,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:54:55,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 13:54:55,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:54:55,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 13:54:55,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 13:54:55,800 INFO L87 Difference]: Start difference. First operand 2559 states and 4079 transitions. Second operand has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 13:54:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:54:56,317 INFO L93 Difference]: Finished difference Result 2704 states and 4284 transitions. [2022-12-14 13:54:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 13:54:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) Word has length 108 [2022-12-14 13:54:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:54:56,336 INFO L225 Difference]: With dead ends: 2704 [2022-12-14 13:54:56,336 INFO L226 Difference]: Without dead ends: 2689 [2022-12-14 13:54:56,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-14 13:54:56,340 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 662 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 13:54:56,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 2926 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 13:54:56,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2022-12-14 13:54:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2635. [2022-12-14 13:54:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 1838 states have (on average 1.5625680087051144) internal successors, (2872), 1916 states have internal predecessors, (2872), 631 states have call successors, (631), 146 states have call predecessors, (631), 165 states have return successors, (686), 605 states have call predecessors, (686), 626 states have call successors, (686) [2022-12-14 13:54:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 4189 transitions. [2022-12-14 13:54:56,560 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 4189 transitions. Word has length 108 [2022-12-14 13:54:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:54:56,561 INFO L495 AbstractCegarLoop]: Abstraction has 2635 states and 4189 transitions. [2022-12-14 13:54:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-14 13:54:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 4189 transitions. [2022-12-14 13:54:56,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 13:54:56,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:54:56,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:56,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 13:54:56,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:54:56,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:54:56,566 INFO L85 PathProgramCache]: Analyzing trace with hash 658983411, now seen corresponding path program 1 times [2022-12-14 13:54:56,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:54:56,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183840717] [2022-12-14 13:54:56,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:56,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:54:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 13:54:59,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:54:59,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183840717] [2022-12-14 13:54:59,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183840717] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:54:59,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156464638] [2022-12-14 13:54:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:54:59,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:54:59,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:54:59,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:54:59,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:54:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:54:59,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 13:54:59,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:54:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 13:54:59,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 13:54:59,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156464638] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:54:59,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 13:54:59,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [23] total 25 [2022-12-14 13:54:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979921445] [2022-12-14 13:54:59,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:54:59,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:54:59,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:54:59,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:54:59,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=540, Unknown=0, NotChecked=0, Total=600 [2022-12-14 13:54:59,667 INFO L87 Difference]: Start difference. First operand 2635 states and 4189 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-14 13:54:59,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:54:59,913 INFO L93 Difference]: Finished difference Result 2795 states and 4460 transitions. [2022-12-14 13:54:59,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 13:54:59,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 115 [2022-12-14 13:54:59,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:54:59,923 INFO L225 Difference]: With dead ends: 2795 [2022-12-14 13:54:59,923 INFO L226 Difference]: Without dead ends: 2780 [2022-12-14 13:54:59,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-12-14 13:54:59,926 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 47 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:54:59,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1853 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:54:59,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2022-12-14 13:55:00,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2651. [2022-12-14 13:55:00,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 1854 states have (on average 1.557713052858684) internal successors, (2888), 1932 states have internal predecessors, (2888), 631 states have call successors, (631), 146 states have call predecessors, (631), 165 states have return successors, (686), 605 states have call predecessors, (686), 626 states have call successors, (686) [2022-12-14 13:55:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 4205 transitions. [2022-12-14 13:55:00,047 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 4205 transitions. Word has length 115 [2022-12-14 13:55:00,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:55:00,047 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 4205 transitions. [2022-12-14 13:55:00,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-14 13:55:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 4205 transitions. [2022-12-14 13:55:00,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-14 13:55:00,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:55:00,050 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:00,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:55:00,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:55:00,252 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:55:00,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:55:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash 364364084, now seen corresponding path program 1 times [2022-12-14 13:55:00,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:55:00,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423601310] [2022-12-14 13:55:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:55:00,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:55:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:55:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 13:55:01,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:55:01,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423601310] [2022-12-14 13:55:01,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423601310] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:55:01,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998470754] [2022-12-14 13:55:01,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:55:01,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:55:01,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:55:01,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:55:01,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89deab8b-39cb-4ff7-903d-119bfcbbe235/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:55:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:55:01,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-14 13:55:01,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:55:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 13:55:02,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:55:30,158 WARN L233 SmtUtils]: Spent 26.53s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 13:55:55,752 WARN L233 SmtUtils]: Spent 25.10s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 13:55:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 13:55:56,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998470754] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:55:56,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1254702129] [2022-12-14 13:55:56,150 INFO L159 IcfgInterpreter]: Started Sifa with 115 locations of interest [2022-12-14 13:55:56,150 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:55:56,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:55:56,156 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:55:56,156 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:56:01,862 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 451 for LOIs [2022-12-14 13:56:01,935 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 594 for LOIs [2022-12-14 13:56:10,554 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 594 for LOIs [2022-12-14 13:56:14,070 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 578 for LOIs [2022-12-14 13:56:23,152 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 453 for LOIs [2022-12-14 13:56:25,224 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 509 for LOIs [2022-12-14 13:56:27,623 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 59 for LOIs [2022-12-14 13:56:27,636 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 445 for LOIs [2022-12-14 13:56:27,711 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 81 for LOIs [2022-12-14 13:56:27,718 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 599 for LOIs [2022-12-14 13:56:31,395 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 428 for LOIs [2022-12-14 13:56:31,462 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 459 for LOIs [2022-12-14 13:56:32,501 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 455 for LOIs [2022-12-14 13:56:32,575 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 562 for LOIs [2022-12-14 13:56:35,444 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 841 for LOIs [2022-12-14 14:08:29,400 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 668 for LOIs [2022-12-14 14:08:29,897 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:08:42,939 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 668 DAG size of output: 527 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:08:49,355 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 708 DAG size of output: 541 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)