./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V --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 b90339f9090766921b1c16763101e1e0bf56713d98b802bfaa51b02dabc40a61 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:37:47,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:37:47,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:37:47,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:37:47,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:37:47,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:37:47,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:37:47,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:37:47,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:37:47,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:37:47,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:37:47,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:37:47,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:37:47,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:37:47,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:37:47,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:37:47,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:37:47,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:37:47,218 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:37:47,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:37:47,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:37:47,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:37:47,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:37:47,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:37:47,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:37:47,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:37:47,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:37:47,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:37:47,248 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:37:47,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:37:47,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:37:47,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:37:47,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:37:47,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:37:47,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:37:47,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:37:47,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:37:47,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:37:47,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:37:47,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:37:47,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:37:47,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:37:47,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:37:47,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:37:47,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:37:47,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:37:47,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:37:47,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:37:47,306 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:37:47,306 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:37:47,307 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:37:47,307 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:37:47,307 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:37:47,307 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:37:47,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:37:47,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:37:47,308 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:37:47,308 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:37:47,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:37:47,308 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:37:47,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:37:47,309 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:37:47,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:37:47,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:37:47,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:37:47,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:37:47,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:37:47,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:37:47,311 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:37:47,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:37:47,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:37:47,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:37:47,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:37:47,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:37:47,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:37:47,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:37:47,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:37:47,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:37:47,313 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:37:47,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:37:47,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:37:47,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:37:47,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:37:47,314 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b90339f9090766921b1c16763101e1e0bf56713d98b802bfaa51b02dabc40a61 [2021-11-23 02:37:47,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:37:47,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:37:47,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:37:47,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:37:47,622 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:37:47,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2021-11-23 02:37:47,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/data/edaf98c25/334bf1d7321a4b9a98045abf8005bc64/FLAG6d49d0d79 [2021-11-23 02:37:48,411 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:37:48,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2021-11-23 02:37:48,449 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/data/edaf98c25/334bf1d7321a4b9a98045abf8005bc64/FLAG6d49d0d79 [2021-11-23 02:37:48,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/data/edaf98c25/334bf1d7321a4b9a98045abf8005bc64 [2021-11-23 02:37:48,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:37:48,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:37:48,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:37:48,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:37:48,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:37:48,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:48" (1/1) ... [2021-11-23 02:37:48,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434c9e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:48, skipping insertion in model container [2021-11-23 02:37:48,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:37:48" (1/1) ... [2021-11-23 02:37:48,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:37:48,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:37:49,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2021-11-23 02:37:49,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:37:49,361 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:37:49,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2021-11-23 02:37:49,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:37:49,592 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:37:49,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49 WrapperNode [2021-11-23 02:37:49,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:37:49,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:37:49,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:37:49,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:37:49,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,761 INFO L137 Inliner]: procedures = 95, calls = 343, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1152 [2021-11-23 02:37:49,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:37:49,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:37:49,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:37:49,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:37:49,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:37:49,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:37:49,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:37:49,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:37:49,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (1/1) ... [2021-11-23 02:37:49,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:37:49,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:37:49,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:37:49,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:37:49,976 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-11-23 02:37:49,976 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-11-23 02:37:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:37:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-23 02:37:49,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-23 02:37:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-23 02:37:49,977 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-23 02:37:49,977 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-23 02:37:49,978 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-23 02:37:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-23 02:37:49,978 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-23 02:37:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-23 02:37:49,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-23 02:37:49,978 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-23 02:37:49,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-23 02:37:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 02:37:49,979 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 02:37:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 02:37:49,979 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 02:37:49,979 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-23 02:37:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-23 02:37:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-23 02:37:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-23 02:37:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-23 02:37:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-23 02:37:49,980 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-23 02:37:49,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-23 02:37:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-23 02:37:49,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-23 02:37:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-23 02:37:49,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-23 02:37:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-23 02:37:49,981 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-23 02:37:49,981 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-23 02:37:49,982 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-23 02:37:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-23 02:37:49,982 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-23 02:37:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-23 02:37:49,982 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-23 02:37:49,982 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-23 02:37:49,983 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-23 02:37:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-23 02:37:49,983 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-23 02:37:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:37:49,983 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-23 02:37:49,984 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-23 02:37:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-23 02:37:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-23 02:37:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-23 02:37:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-23 02:37:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:37:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:37:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-23 02:37:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-23 02:37:50,214 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:37:50,216 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:37:51,410 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:37:52,033 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:37:52,033 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:37:52,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:52 BoogieIcfgContainer [2021-11-23 02:37:52,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:37:52,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:37:52,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:37:52,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:37:52,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:37:48" (1/3) ... [2021-11-23 02:37:52,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5241a734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:37:52, skipping insertion in model container [2021-11-23 02:37:52,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:37:49" (2/3) ... [2021-11-23 02:37:52,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5241a734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:37:52, skipping insertion in model container [2021-11-23 02:37:52,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:37:52" (3/3) ... [2021-11-23 02:37:52,050 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2021-11-23 02:37:52,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:37:52,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:37:52,132 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:37:52,139 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:37:52,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:37:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-23 02:37:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 02:37:52,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:52,198 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:37:52,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:52,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1696278331, now seen corresponding path program 1 times [2021-11-23 02:37:52,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:52,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139163774] [2021-11-23 02:37:52,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:52,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:37:52,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:52,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139163774] [2021-11-23 02:37:52,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139163774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:52,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:52,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:37:52,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413908367] [2021-11-23 02:37:52,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:52,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:37:52,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:52,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:37:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:37:52,849 INFO L87 Difference]: Start difference. First operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-23 02:37:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:53,067 INFO L93 Difference]: Finished difference Result 399 states and 630 transitions. [2021-11-23 02:37:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:37:53,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2021-11-23 02:37:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:53,092 INFO L225 Difference]: With dead ends: 399 [2021-11-23 02:37:53,092 INFO L226 Difference]: Without dead ends: 377 [2021-11-23 02:37:53,100 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:37:53,104 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:53,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 560 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:37:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-23 02:37:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-23 02:37:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 253 states have (on average 1.5770750988142292) internal successors, (399), 272 states have internal predecessors, (399), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2021-11-23 02:37:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 592 transitions. [2021-11-23 02:37:53,217 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 592 transitions. Word has length 88 [2021-11-23 02:37:53,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:53,219 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 592 transitions. [2021-11-23 02:37:53,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-23 02:37:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 592 transitions. [2021-11-23 02:37:53,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 02:37:53,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:53,267 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:37:53,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:37:53,268 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:53,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1539292562, now seen corresponding path program 1 times [2021-11-23 02:37:53,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:53,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802888148] [2021-11-23 02:37:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:53,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:37:53,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:53,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802888148] [2021-11-23 02:37:53,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802888148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:53,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:53,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:37:53,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429382507] [2021-11-23 02:37:53,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:53,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:37:53,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:37:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:37:53,517 INFO L87 Difference]: Start difference. First operand 377 states and 592 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-23 02:37:55,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:55,760 INFO L93 Difference]: Finished difference Result 1148 states and 1837 transitions. [2021-11-23 02:37:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:37:55,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2021-11-23 02:37:55,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:55,777 INFO L225 Difference]: With dead ends: 1148 [2021-11-23 02:37:55,777 INFO L226 Difference]: Without dead ends: 794 [2021-11-23 02:37:55,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:37:55,793 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 1135 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:55,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 1892 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-23 02:37:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-23 02:37:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 745. [2021-11-23 02:37:55,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 510 states have (on average 1.592156862745098) internal successors, (812), 543 states have internal predecessors, (812), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-23 02:37:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1191 transitions. [2021-11-23 02:37:55,908 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1191 transitions. Word has length 89 [2021-11-23 02:37:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:55,912 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1191 transitions. [2021-11-23 02:37:55,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-23 02:37:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1191 transitions. [2021-11-23 02:37:55,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 02:37:55,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:55,921 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:37:55,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:37:55,921 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:55,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:55,922 INFO L85 PathProgramCache]: Analyzing trace with hash -571796844, now seen corresponding path program 1 times [2021-11-23 02:37:55,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:55,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574236726] [2021-11-23 02:37:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:55,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:37:56,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574236726] [2021-11-23 02:37:56,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574236726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:56,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:56,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:37:56,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642769205] [2021-11-23 02:37:56,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:56,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:37:56,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:56,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:37:56,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:37:56,156 INFO L87 Difference]: Start difference. First operand 745 states and 1191 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:37:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:56,673 INFO L93 Difference]: Finished difference Result 816 states and 1303 transitions. [2021-11-23 02:37:56,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:37:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2021-11-23 02:37:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:56,683 INFO L225 Difference]: With dead ends: 816 [2021-11-23 02:37:56,683 INFO L226 Difference]: Without dead ends: 801 [2021-11-23 02:37:56,684 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:37:56,685 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 684 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:56,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 1472 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 02:37:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-11-23 02:37:56,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 749. [2021-11-23 02:37:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.5875486381322956) internal successors, (816), 547 states have internal predecessors, (816), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-23 02:37:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1195 transitions. [2021-11-23 02:37:56,743 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1195 transitions. Word has length 93 [2021-11-23 02:37:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:56,744 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1195 transitions. [2021-11-23 02:37:56,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:37:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1195 transitions. [2021-11-23 02:37:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-23 02:37:56,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:56,748 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:37:56,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:37:56,748 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:56,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash -840832870, now seen corresponding path program 1 times [2021-11-23 02:37:56,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:56,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544621868] [2021-11-23 02:37:56,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:56,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 02:37:56,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544621868] [2021-11-23 02:37:56,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544621868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:56,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:37:56,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:37:56,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777118702] [2021-11-23 02:37:56,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:56,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:37:56,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:37:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:37:56,888 INFO L87 Difference]: Start difference. First operand 749 states and 1195 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-23 02:37:57,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:57,046 INFO L93 Difference]: Finished difference Result 768 states and 1219 transitions. [2021-11-23 02:37:57,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:37:57,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2021-11-23 02:37:57,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:57,055 INFO L225 Difference]: With dead ends: 768 [2021-11-23 02:37:57,055 INFO L226 Difference]: Without dead ends: 753 [2021-11-23 02:37:57,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:37:57,057 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 30 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:57,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2200 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:37:57,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-11-23 02:37:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 749. [2021-11-23 02:37:57,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.583657587548638) internal successors, (814), 547 states have internal predecessors, (814), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-23 02:37:57,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1193 transitions. [2021-11-23 02:37:57,117 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1193 transitions. Word has length 98 [2021-11-23 02:37:57,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:57,118 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1193 transitions. [2021-11-23 02:37:57,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-23 02:37:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1193 transitions. [2021-11-23 02:37:57,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-23 02:37:57,122 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:57,122 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:37:57,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:37:57,123 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:57,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1385729553, now seen corresponding path program 1 times [2021-11-23 02:37:57,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:57,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079360756] [2021-11-23 02:37:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:57,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 02:37:57,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:57,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079360756] [2021-11-23 02:37:57,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079360756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:37:57,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965292692] [2021-11-23 02:37:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:57,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:57,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:37:57,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:37:57,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:37:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:58,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:37:58,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 02:37:58,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:37:58,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965292692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:58,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:37:58,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 24 [2021-11-23 02:37:58,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683304226] [2021-11-23 02:37:58,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:58,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:37:58,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:58,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:37:58,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2021-11-23 02:37:58,466 INFO L87 Difference]: Start difference. First operand 749 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-23 02:37:58,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:58,693 INFO L93 Difference]: Finished difference Result 832 states and 1317 transitions. [2021-11-23 02:37:58,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:37:58,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 105 [2021-11-23 02:37:58,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:58,702 INFO L225 Difference]: With dead ends: 832 [2021-11-23 02:37:58,702 INFO L226 Difference]: Without dead ends: 817 [2021-11-23 02:37:58,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:37:58,704 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 44 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:58,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1729 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:37:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-23 02:37:58,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 753. [2021-11-23 02:37:58,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 518 states have (on average 1.579150579150579) internal successors, (818), 551 states have internal predecessors, (818), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-23 02:37:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1197 transitions. [2021-11-23 02:37:58,754 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1197 transitions. Word has length 105 [2021-11-23 02:37:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:58,755 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1197 transitions. [2021-11-23 02:37:58,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-23 02:37:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1197 transitions. [2021-11-23 02:37:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 02:37:58,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:58,759 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:37:58,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:37:58,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:58,987 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1502716547, now seen corresponding path program 1 times [2021-11-23 02:37:58,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:58,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696731519] [2021-11-23 02:37:58,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:58,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:59,311 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-23 02:37:59,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696731519] [2021-11-23 02:37:59,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696731519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:37:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199260969] [2021-11-23 02:37:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:59,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:59,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:37:59,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:37:59,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abfedf77-7a51-4d02-b0bc-92d52a3df194/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:37:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:59,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-23 02:37:59,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:38:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:38:01,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:38:50,700 WARN L227 SmtUtils]: Spent 44.57s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 02:39:35,335 WARN L227 SmtUtils]: Spent 44.08s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-23 02:39:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-23 02:39:36,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199260969] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:39:36,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2034187074] [2021-11-23 02:39:36,106 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2021-11-23 02:39:36,106 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:39:36,111 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:39:36,117 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:39:36,118 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:39:57,030 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 534 for LOIs [2021-11-23 02:39:57,712 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2021-11-23 02:43:24,192 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 586 for LOIs [2021-11-23 02:44:11,715 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2021-11-23 02:44:13,745 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 501 for LOIs [2021-11-23 02:44:15,670 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 78 for LOIs [2021-11-23 02:44:15,691 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 109 for LOIs [2021-11-23 02:44:15,715 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2021-11-23 02:44:19,312 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 491 for LOIs [2021-11-23 02:44:19,913 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 455 for LOIs [2021-11-23 02:44:20,837 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 449 for LOIs [2021-11-23 02:44:20,918 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2021-11-23 02:44:23,651 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2021-11-23 02:44:29,381 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2021-11-23 02:44:29,824 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:44:52,407 WARN L227 SmtUtils]: Spent 9.71s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:03,894 WARN L227 SmtUtils]: Spent 10.16s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:10,576 WARN L227 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:17,227 WARN L227 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:29,275 WARN L227 SmtUtils]: Spent 9.35s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:45:37,368 WARN L227 SmtUtils]: Spent 6.43s on a formula simplification that was a NOOP. DAG size: 836 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:08,400 WARN L227 SmtUtils]: Spent 16.97s on a formula simplification. DAG size of input: 723 DAG size of output: 631 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:31,492 WARN L227 SmtUtils]: Spent 16.66s on a formula simplification. DAG size of input: 725 DAG size of output: 633 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:48:48,619 WARN L227 SmtUtils]: Spent 13.79s on a formula simplification. DAG size of input: 730 DAG size of output: 627 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:06,049 WARN L227 SmtUtils]: Spent 13.87s on a formula simplification. DAG size of input: 732 DAG size of output: 629 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:23,568 WARN L227 SmtUtils]: Spent 13.92s on a formula simplification. DAG size of input: 734 DAG size of output: 631 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:49:41,280 WARN L227 SmtUtils]: Spent 13.89s on a formula simplification. DAG size of input: 736 DAG size of output: 633 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)