./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5237d83 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_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f --- 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-b5237d8 [2022-11-21 13:47:39,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:47:39,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:47:39,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:47:39,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:47:39,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:47:39,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:47:39,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:47:39,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:47:39,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:47:39,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:47:39,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:47:39,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:47:39,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:47:39,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:47:39,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:47:39,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:47:39,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:47:39,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:47:39,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:47:39,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:47:39,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:47:39,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:47:39,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:47:39,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:47:39,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:47:39,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:47:39,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:47:39,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:47:39,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:47:39,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:47:39,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:47:39,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:47:39,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:47:39,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:47:39,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:47:39,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:47:39,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:47:39,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:47:39,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:47:39,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:47:39,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-21 13:47:39,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:47:39,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:47:39,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:47:39,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:47:39,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:47:39,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:47:39,831 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:47:39,832 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 13:47:39,832 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 13:47:39,832 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 13:47:39,833 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 13:47:39,833 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 13:47:39,834 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 13:47:39,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:47:39,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:47:39,834 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:47:39,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:47:39,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:47:39,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:47:39,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 13:47:39,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 13:47:39,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 13:47:39,836 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:47:39,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:47:39,836 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 13:47:39,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:47:39,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 13:47:39,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:47:39,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:47:39,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:47:39,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:47:39,840 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 13:47:39,840 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d84130cab59568fb669543ac086f4847eedfc87145b3c30d32e19c1d0d03b42f [2022-11-21 13:47:40,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:47:40,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:47:40,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:47:40,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:47:40,181 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:47:40,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2022-11-21 13:47:43,227 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:47:43,624 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:47:43,628 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c [2022-11-21 13:47:43,656 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/data/bd537ef4e/d3ea721fc10a4ba3be324006e2f3be08/FLAG353689d82 [2022-11-21 13:47:43,808 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/data/bd537ef4e/d3ea721fc10a4ba3be324006e2f3be08 [2022-11-21 13:47:43,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:47:43,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:47:43,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:43,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:47:43,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:47:43,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:43" (1/1) ... [2022-11-21 13:47:43,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f572b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:43, skipping insertion in model container [2022-11-21 13:47:43,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:43" (1/1) ... [2022-11-21 13:47:43,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:47:43,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:47:44,401 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_de2d384e-f272-469e-91cb-8a2f5231353a/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2022-11-21 13:47:44,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:44,453 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:47:44,587 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_de2d384e-f272-469e-91cb-8a2f5231353a/sv-benchmarks/c/product-lines/elevator_spec13_product30.cil.c[61393,61406] [2022-11-21 13:47:44,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:44,642 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:47:44,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44 WrapperNode [2022-11-21 13:47:44,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:44,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:44,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:47:44,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:47:44,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:44,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:45,587 INFO L138 Inliner]: procedures = 93, calls = 346, calls flagged for inlining = 198, calls inlined = 1875, statements flattened = 66503 [2022-11-21 13:47:45,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:45,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:47:45,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:47:45,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:47:45,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:45,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:45,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:45,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:46,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:46,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:46,839 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:46,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:47,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:47:47,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:47:47,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:47:47,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:47:47,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (1/1) ... [2022-11-21 13:47:47,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:47:47,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:47,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:47:47,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 13:47:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:47:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:47:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:47:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:47:47,739 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:47:47,741 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:48:12,016 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:48:12,109 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:48:12,109 INFO L300 CfgBuilder]: Removed 61 assume(true) statements. [2022-11-21 13:48:12,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:12 BoogieIcfgContainer [2022-11-21 13:48:12,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:48:12,127 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 13:48:12,127 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 13:48:12,131 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 13:48:12,132 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 13:48:12,132 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 01:47:43" (1/3) ... [2022-11-21 13:48:12,135 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e21bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 01:48:12, skipping insertion in model container [2022-11-21 13:48:12,135 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 13:48:12,136 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:44" (2/3) ... [2022-11-21 13:48:12,136 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e21bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 01:48:12, skipping insertion in model container [2022-11-21 13:48:12,136 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 13:48:12,136 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:48:12" (3/3) ... [2022-11-21 13:48:12,149 INFO L332 chiAutomizerObserver]: Analyzing ICFG elevator_spec13_product30.cil.c [2022-11-21 13:48:12,571 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 13:48:12,571 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 13:48:12,571 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 13:48:12,571 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 13:48:12,571 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 13:48:12,572 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 13:48:12,572 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 13:48:12,572 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 13:48:12,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17932 states, 17931 states have (on average 1.8808209246556244) internal successors, (33725), 17931 states have internal predecessors, (33725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:12,935 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4072 [2022-11-21 13:48:12,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:48:12,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:48:12,945 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:12,945 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:12,945 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 13:48:12,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17932 states, 17931 states have (on average 1.8808209246556244) internal successors, (33725), 17931 states have internal predecessors, (33725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:13,204 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4072 [2022-11-21 13:48:13,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:48:13,205 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:48:13,208 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:13,208 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:13,222 INFO L748 eck$LassoCheckResult]: Stem: 7194#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(10, 4);call #Ultimate.allocInit(4, 5);call write~init~int(91, 5, 0, 1);call write~init~int(95, 5, 1, 1);call write~init~int(93, 5, 2, 1);call write~init~int(0, 5, 3, 1);call #Ultimate.allocInit(4, 6);call write~init~int(91, 6, 0, 1);call write~init~int(93, 6, 1, 1);call write~init~int(32, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(5, 7);call write~init~int(32, 7, 0, 1);call write~init~int(97, 7, 1, 1);call write~init~int(116, 7, 2, 1);call write~init~int(32, 7, 3, 1);call write~init~int(0, 7, 4, 1);call #Ultimate.allocInit(3, 8);call write~init~int(37, 8, 0, 1);call write~init~int(105, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(10, 9);call #Ultimate.allocInit(3, 10);call write~init~int(117, 10, 0, 1);call write~init~int(112, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(5, 11);call write~init~int(100, 11, 0, 1);call write~init~int(111, 11, 1, 1);call write~init~int(119, 11, 2, 1);call write~init~int(110, 11, 3, 1);call write~init~int(0, 11, 4, 1);call #Ultimate.allocInit(7, 12);call write~init~int(32, 12, 0, 1);call write~init~int(73, 12, 1, 1);call write~init~int(76, 12, 2, 1);call write~init~int(95, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(4, 13);call write~init~int(32, 13, 0, 1);call write~init~int(37, 13, 1, 1);call write~init~int(105, 13, 2, 1);call write~init~int(0, 13, 3, 1);call #Ultimate.allocInit(4, 14);call write~init~int(32, 14, 0, 1);call write~init~int(37, 14, 1, 1);call write~init~int(105, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(4, 15);call write~init~int(32, 15, 0, 1);call write~init~int(37, 15, 1, 1);call write~init~int(105, 15, 2, 1);call write~init~int(0, 15, 3, 1);call #Ultimate.allocInit(4, 16);call write~init~int(32, 16, 0, 1);call write~init~int(37, 16, 1, 1);call write~init~int(105, 16, 2, 1);call write~init~int(0, 16, 3, 1);call #Ultimate.allocInit(4, 17);call write~init~int(32, 17, 0, 1);call write~init~int(37, 17, 1, 1);call write~init~int(105, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(6, 18);call write~init~int(32, 18, 0, 1);call write~init~int(70, 18, 1, 1);call write~init~int(95, 18, 2, 1);call write~init~int(112, 18, 3, 1);call write~init~int(58, 18, 4, 1);call write~init~int(0, 18, 5, 1);call #Ultimate.allocInit(4, 19);call write~init~int(32, 19, 0, 1);call write~init~int(37, 19, 1, 1);call write~init~int(105, 19, 2, 1);call write~init~int(0, 19, 3, 1);call #Ultimate.allocInit(4, 20);call write~init~int(32, 20, 0, 1);call write~init~int(37, 20, 1, 1);call write~init~int(105, 20, 2, 1);call write~init~int(0, 20, 3, 1);call #Ultimate.allocInit(4, 21);call write~init~int(32, 21, 0, 1);call write~init~int(37, 21, 1, 1);call write~init~int(105, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(4, 22);call write~init~int(32, 22, 0, 1);call write~init~int(37, 22, 1, 1);call write~init~int(105, 22, 2, 1);call write~init~int(0, 22, 3, 1);call #Ultimate.allocInit(4, 23);call write~init~int(32, 23, 0, 1);call write~init~int(37, 23, 1, 1);call write~init~int(105, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(2, 24);call write~init~int(10, 24, 0, 1);call write~init~int(0, 24, 1, 1);call #Ultimate.allocInit(9, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(21, 28);call #Ultimate.allocInit(30, 29);call #Ultimate.allocInit(9, 30);call #Ultimate.allocInit(21, 31);call #Ultimate.allocInit(30, 32);call #Ultimate.allocInit(9, 33);call #Ultimate.allocInit(25, 34);call #Ultimate.allocInit(30, 35);call #Ultimate.allocInit(9, 36);call #Ultimate.allocInit(25, 37);~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~prevDir~0 := 0;~cleanupTimeShifts~0 := 12;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 4316#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret24#1, main_~retValue_acc~7#1, main_~tmp~9#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 3926#L2983true assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 16723#L2976true assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~24#1;havoc valid_product_~retValue_acc~24#1;valid_product_~retValue_acc~24#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~24#1; 9521#L2991true main_#t~ret24#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret24#1;havoc main_#t~ret24#1; 8970#L1277true assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 6933#L1250true assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret13#1, aliceCall_~tmp~2#1;havoc aliceCall_~tmp~2#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 2413#L95true assume 0 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 4;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 11132#L120true aliceCall_#t~ret13#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~2#1 := aliceCall_#t~ret13#1;havoc aliceCall_#t~ret13#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~2#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 17131#L530true assume 0 == initPersonOnFloor_~floor#1; 11832#L531true assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 14350#L638-1true assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 13119#L322true assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 12583#L334-2true assume { :end_inline_callOnFloor } true; 17701#L674true assume { :end_inline_initPersonOnFloor } true; 13049#L1006true assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret14#1, angelinaCall_~tmp~3#1;havoc angelinaCall_~tmp~3#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 80#L95-1true assume 0 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 4;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 14351#L120-1true angelinaCall_#t~ret14#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~3#1 := angelinaCall_#t~ret14#1;havoc angelinaCall_#t~ret14#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~3#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 6971#L530-1true assume 0 == initPersonOnFloor_~floor#1; 13025#L531-2true assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 10085#L638-3true assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 2908#L322-2true assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 4320#L334-5true assume { :end_inline_callOnFloor } true; 9339#L674-1true assume { :end_inline_initPersonOnFloor } true; 5354#L1017true assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret84#1, timeShift_~tmp~24#1;havoc timeShift_~tmp~24#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret4#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~12#1;havoc getCurrentHeading_~retValue_acc~12#1;getCurrentHeading_~retValue_acc~12#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~12#1; 4548#L1680true __utac_acc__Specification13_spec__1_#t~ret4#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret4#1;havoc __utac_acc__Specification13_spec__1_#t~ret4#1; 17891#L851true assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~10#1;havoc areDoorsOpen_~retValue_acc~10#1;areDoorsOpen_~retValue_acc~10#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~10#1; 17122#L1637true timeShift_#t~ret84#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~24#1 := timeShift_#t~ret84#1;havoc timeShift_#t~ret84#1; 2411#L2587true assume 0 != timeShift_~tmp~24#1; 5433#L2588true assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 17485#L2587-1true assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret5#1, __utac_acc__Specification13_spec__2_#t~ret6#1, __utac_acc__Specification13_spec__2_#t~ret7#1, __utac_acc__Specification13_spec__2_#t~ret8#1, __utac_acc__Specification13_spec__2_#t~ret9#1, __utac_acc__Specification13_spec__2_#t~ret10#1, __utac_acc__Specification13_spec__2_~tmp~0#1, __utac_acc__Specification13_spec__2_~tmp___0~0#1, __utac_acc__Specification13_spec__2_~tmp___1~0#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 5072#L869true assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 3637#L870true assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~22#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~22#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 12370#L2807true assume 1 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i~3#1 := 0;existInLiftCallsInDirection_~i~3#1 := 1 + ~currentFloorID~0; 6306#L2811-2true [2022-11-21 13:48:13,223 INFO L750 eck$LassoCheckResult]: Loop: 6306#L2811-2true assume !false; 4903#L2812true assume existInLiftCallsInDirection_~i~3#1 < 5; 507#L2813true assume !(0 == existInLiftCallsInDirection_~i~3#1); 7016#L2826true assume !(1 == existInLiftCallsInDirection_~i~3#1); 7240#L2835true assume !(2 == existInLiftCallsInDirection_~i~3#1); 3716#L2844true assume !(3 == existInLiftCallsInDirection_~i~3#1); 9525#L2853true assume !(4 == existInLiftCallsInDirection_~i~3#1); 975#L2854-1true existInLiftCallsInDirection_~i~3#1 := 1 + existInLiftCallsInDirection_~i~3#1; 6306#L2811-2true [2022-11-21 13:48:13,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1529622645, now seen corresponding path program 1 times [2022-11-21 13:48:13,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:13,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743074215] [2022-11-21 13:48:13,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:13,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:13,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:13,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:13,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743074215] [2022-11-21 13:48:13,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743074215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:13,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:13,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:48:13,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111394850] [2022-11-21 13:48:13,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:13,853 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 13:48:13,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1374005635, now seen corresponding path program 1 times [2022-11-21 13:48:13,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:13,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258049288] [2022-11-21 13:48:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:13,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:13,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:48:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:13,897 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:48:13,968 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:48:13,968 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:48:13,969 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:48:13,969 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:48:13,969 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 13:48:13,969 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:48:13,969 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:48:13,969 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:48:13,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product30.cil.c_Iteration1_Loop [2022-11-21 13:48:13,970 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:48:13,970 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:48:13,999 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:48:14,115 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:48:14,116 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 13:48:14,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:48:14,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:14,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:48:14,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-21 13:48:14,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:48:14,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:48:14,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-21 13:48:14,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:48:14,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:14,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:48:14,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 13:48:14,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:48:14,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-21 13:48:14,255 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 13:48:14,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-21 13:48:14,261 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:48:14,261 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:48:14,261 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:48:14,261 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:48:14,261 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 13:48:14,261 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:48:14,261 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:48:14,261 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:48:14,261 INFO L133 ssoRankerPreferences]: Filename of dumped script: elevator_spec13_product30.cil.c_Iteration1_Loop [2022-11-21 13:48:14,262 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:48:14,262 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:48:14,263 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:48:14,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:48:14,341 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 13:48:14,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:48:14,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:14,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:48:14,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-21 13:48:14,364 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:48:14,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:48:14,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 13:48:14,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:48:14,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:48:14,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:48:14,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 13:48:14,381 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 13:48:14,398 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 13:48:14,405 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 13:48:14,405 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 13:48:14,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:48:14,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:48:14,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:48:14,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-21 13:48:14,443 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 13:48:14,443 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 13:48:14,444 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 13:48:14,444 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_existInLiftCallsInDirection_~i~3#1) = -1*ULTIMATE.start_existInLiftCallsInDirection_~i~3#1 Supporting invariants [] [2022-11-21 13:48:14,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-11-21 13:48:14,455 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 13:48:14,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:14,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:48:14,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:14,724 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:48:14,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:14,997 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2022-11-21 13:48:15,038 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17932 states, 17931 states have (on average 1.8808209246556244) internal successors, (33725), 17931 states have internal predecessors, (33725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:15,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de2d384e-f272-469e-91cb-8a2f5231353a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:25,817 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17932 states, 17931 states have (on average 1.8808209246556244) internal successors, (33725), 17931 states have internal predecessors, (33725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 211046 states and 396793 transitions. Complement of second has 18 states. [2022-11-21 13:48:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-21 13:48:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 215267 transitions. [2022-11-21 13:48:26,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 215267 transitions. Stem has 34 letters. Loop has 8 letters. [2022-11-21 13:48:26,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:48:26,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 215267 transitions. Stem has 42 letters. Loop has 8 letters. [2022-11-21 13:48:26,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:48:26,321 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 215267 transitions. Stem has 34 letters. Loop has 16 letters. [2022-11-21 13:48:26,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:48:26,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 211046 states and 396793 transitions. [2022-11-21 13:48:28,594 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 28728 [2022-11-21 13:48:29,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 211046 states to 114375 states and 214990 transitions. [2022-11-21 13:48:29,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 114345 [2022-11-21 13:48:29,744 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 114346 [2022-11-21 13:48:29,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114375 states and 214990 transitions. [2022-11-21 13:48:29,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:48:29,746 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114375 states and 214990 transitions. [2022-11-21 13:48:29,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114375 states and 214990 transitions. [2022-11-21 13:48:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114375 to 32246. [2022-11-21 13:48:31,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32246 states, 32246 states have (on average 1.8769769893940333) internal successors, (60525), 32245 states have internal predecessors, (60525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32246 states to 32246 states and 60525 transitions. [2022-11-21 13:48:31,259 INFO L240 hiAutomatonCegarLoop]: Abstraction has 32246 states and 60525 transitions. [2022-11-21 13:48:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:48:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:48:31,266 INFO L87 Difference]: Start difference. First operand 32246 states and 60525 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:32,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:32,474 INFO L93 Difference]: Finished difference Result 46585 states and 87289 transitions. [2022-11-21 13:48:32,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46585 states and 87289 transitions. [2022-11-21 13:48:32,720 INFO L131 ngComponentsAnalysis]: Automaton has 78 accepting balls. 15466 [2022-11-21 13:48:32,897 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46585 states to 46572 states and 87276 transitions. [2022-11-21 13:48:32,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46553 [2022-11-21 13:48:32,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46553 [2022-11-21 13:48:32,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46572 states and 87276 transitions. [2022-11-21 13:48:33,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:48:33,009 INFO L218 hiAutomatonCegarLoop]: Abstraction has 46572 states and 87276 transitions. [2022-11-21 13:48:33,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46572 states and 87276 transitions. [2022-11-21 13:48:33,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46572 to 17929. [2022-11-21 13:48:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17929 states, 17929 states have (on average 1.874003011880194) internal successors, (33599), 17928 states have internal predecessors, (33599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 33599 transitions. [2022-11-21 13:48:33,757 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17929 states and 33599 transitions. [2022-11-21 13:48:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:33,758 INFO L428 stractBuchiCegarLoop]: Abstraction has 17929 states and 33599 transitions. [2022-11-21 13:48:33,758 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-21 13:48:33,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17929 states and 33599 transitions. [2022-11-21 13:48:33,854 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4072 [2022-11-21 13:48:33,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:48:33,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:48:33,858 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:33,858 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:48:33,859 INFO L748 eck$LassoCheckResult]: Stem: 320412#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(10, 4);call #Ultimate.allocInit(4, 5);call write~init~int(91, 5, 0, 1);call write~init~int(95, 5, 1, 1);call write~init~int(93, 5, 2, 1);call write~init~int(0, 5, 3, 1);call #Ultimate.allocInit(4, 6);call write~init~int(91, 6, 0, 1);call write~init~int(93, 6, 1, 1);call write~init~int(32, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(5, 7);call write~init~int(32, 7, 0, 1);call write~init~int(97, 7, 1, 1);call write~init~int(116, 7, 2, 1);call write~init~int(32, 7, 3, 1);call write~init~int(0, 7, 4, 1);call #Ultimate.allocInit(3, 8);call write~init~int(37, 8, 0, 1);call write~init~int(105, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(10, 9);call #Ultimate.allocInit(3, 10);call write~init~int(117, 10, 0, 1);call write~init~int(112, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(5, 11);call write~init~int(100, 11, 0, 1);call write~init~int(111, 11, 1, 1);call write~init~int(119, 11, 2, 1);call write~init~int(110, 11, 3, 1);call write~init~int(0, 11, 4, 1);call #Ultimate.allocInit(7, 12);call write~init~int(32, 12, 0, 1);call write~init~int(73, 12, 1, 1);call write~init~int(76, 12, 2, 1);call write~init~int(95, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(4, 13);call write~init~int(32, 13, 0, 1);call write~init~int(37, 13, 1, 1);call write~init~int(105, 13, 2, 1);call write~init~int(0, 13, 3, 1);call #Ultimate.allocInit(4, 14);call write~init~int(32, 14, 0, 1);call write~init~int(37, 14, 1, 1);call write~init~int(105, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(4, 15);call write~init~int(32, 15, 0, 1);call write~init~int(37, 15, 1, 1);call write~init~int(105, 15, 2, 1);call write~init~int(0, 15, 3, 1);call #Ultimate.allocInit(4, 16);call write~init~int(32, 16, 0, 1);call write~init~int(37, 16, 1, 1);call write~init~int(105, 16, 2, 1);call write~init~int(0, 16, 3, 1);call #Ultimate.allocInit(4, 17);call write~init~int(32, 17, 0, 1);call write~init~int(37, 17, 1, 1);call write~init~int(105, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(6, 18);call write~init~int(32, 18, 0, 1);call write~init~int(70, 18, 1, 1);call write~init~int(95, 18, 2, 1);call write~init~int(112, 18, 3, 1);call write~init~int(58, 18, 4, 1);call write~init~int(0, 18, 5, 1);call #Ultimate.allocInit(4, 19);call write~init~int(32, 19, 0, 1);call write~init~int(37, 19, 1, 1);call write~init~int(105, 19, 2, 1);call write~init~int(0, 19, 3, 1);call #Ultimate.allocInit(4, 20);call write~init~int(32, 20, 0, 1);call write~init~int(37, 20, 1, 1);call write~init~int(105, 20, 2, 1);call write~init~int(0, 20, 3, 1);call #Ultimate.allocInit(4, 21);call write~init~int(32, 21, 0, 1);call write~init~int(37, 21, 1, 1);call write~init~int(105, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(4, 22);call write~init~int(32, 22, 0, 1);call write~init~int(37, 22, 1, 1);call write~init~int(105, 22, 2, 1);call write~init~int(0, 22, 3, 1);call #Ultimate.allocInit(4, 23);call write~init~int(32, 23, 0, 1);call write~init~int(37, 23, 1, 1);call write~init~int(105, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(2, 24);call write~init~int(10, 24, 0, 1);call write~init~int(0, 24, 1, 1);call #Ultimate.allocInit(9, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(21, 28);call #Ultimate.allocInit(30, 29);call #Ultimate.allocInit(9, 30);call #Ultimate.allocInit(21, 31);call #Ultimate.allocInit(30, 32);call #Ultimate.allocInit(9, 33);call #Ultimate.allocInit(25, 34);call #Ultimate.allocInit(30, 35);call #Ultimate.allocInit(9, 36);call #Ultimate.allocInit(25, 37);~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~prevDir~0 := 0;~cleanupTimeShifts~0 := 12;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 316583#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret24#1, main_~retValue_acc~7#1, main_~tmp~9#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 315984#L2983 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 315985#L2976 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~24#1;havoc valid_product_~retValue_acc~24#1;valid_product_~retValue_acc~24#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~24#1; 322606#L2991 main_#t~ret24#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret24#1;havoc main_#t~ret24#1; 322175#L1277 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 320134#L1250 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret13#1, aliceCall_~tmp~2#1;havoc aliceCall_~tmp~2#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 313399#L95 assume !(0 == getOrigin_~person#1); 309722#L99 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 309723#L120 aliceCall_#t~ret13#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~2#1 := aliceCall_#t~ret13#1;havoc aliceCall_#t~ret13#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~2#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 323764#L530 assume 0 == initPersonOnFloor_~floor#1; 324232#L531 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 308128#L638-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 324878#L322 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 308358#L334-2 assume { :end_inline_callOnFloor } true; 324607#L674 assume { :end_inline_initPersonOnFloor } true; 324842#L1006 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret14#1, angelinaCall_~tmp~3#1;havoc angelinaCall_~tmp~3#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 308211#L95-1 assume !(0 == getOrigin_~person#1); 308212#L99-1 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 308962#L120-1 angelinaCall_#t~ret14#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~3#1 := angelinaCall_#t~ret14#1;havoc angelinaCall_#t~ret14#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~3#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 320180#L530-1 assume 0 == initPersonOnFloor_~floor#1; 320181#L531-2 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 308491#L638-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 314272#L322-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 309036#L334-5 assume { :end_inline_callOnFloor } true; 316590#L674-1 assume { :end_inline_initPersonOnFloor } true; 318095#L1017 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret84#1, timeShift_~tmp~24#1;havoc timeShift_~tmp~24#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret4#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~12#1;havoc getCurrentHeading_~retValue_acc~12#1;getCurrentHeading_~retValue_acc~12#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~12#1; 316924#L1680 __utac_acc__Specification13_spec__1_#t~ret4#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret4#1;havoc __utac_acc__Specification13_spec__1_#t~ret4#1; 316925#L851 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~10#1;havoc areDoorsOpen_~retValue_acc~10#1;areDoorsOpen_~retValue_acc~10#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~10#1; 325876#L1637 timeShift_#t~ret84#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~24#1 := timeShift_#t~ret84#1;havoc timeShift_#t~ret84#1; 313393#L2587 assume 0 != timeShift_~tmp~24#1; 313394#L2588 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 314965#L2587-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret5#1, __utac_acc__Specification13_spec__2_#t~ret6#1, __utac_acc__Specification13_spec__2_#t~ret7#1, __utac_acc__Specification13_spec__2_#t~ret8#1, __utac_acc__Specification13_spec__2_#t~ret9#1, __utac_acc__Specification13_spec__2_#t~ret10#1, __utac_acc__Specification13_spec__2_~tmp~0#1, __utac_acc__Specification13_spec__2_~tmp___0~0#1, __utac_acc__Specification13_spec__2_~tmp___1~0#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 317680#L869 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 315500#L870 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~22#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~22#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 315501#L2807 assume !(1 == existInLiftCallsInDirection_~d#1); 317725#L2873 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 317726#L2877-2 [2022-11-21 13:48:33,859 INFO L750 eck$LassoCheckResult]: Loop: 317726#L2877-2 assume !false; 314225#L2878 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 314226#L2879 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 312508#L2886-2 assume !false; 312509#L2887 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 313475#L2945 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 317726#L2877-2 [2022-11-21 13:48:33,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1898401259, now seen corresponding path program 1 times [2022-11-21 13:48:33,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610679930] [2022-11-21 13:48:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:33,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:34,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610679930] [2022-11-21 13:48:34,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610679930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:34,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:34,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:48:34,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365700915] [2022-11-21 13:48:34,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:34,059 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 13:48:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:34,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2078933803, now seen corresponding path program 1 times [2022-11-21 13:48:34,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:34,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257035545] [2022-11-21 13:48:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:34,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:48:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:34,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:48:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:48:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:48:34,107 INFO L87 Difference]: Start difference. First operand 17929 states and 33599 transitions. cyclomatic complexity: 15704 Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:35,728 INFO L93 Difference]: Finished difference Result 53570 states and 100367 transitions. [2022-11-21 13:48:35,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53570 states and 100367 transitions. [2022-11-21 13:48:35,964 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 12216 [2022-11-21 13:48:36,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53570 states to 53570 states and 100367 transitions. [2022-11-21 13:48:36,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53513 [2022-11-21 13:48:36,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53513 [2022-11-21 13:48:36,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53570 states and 100367 transitions. [2022-11-21 13:48:36,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:48:36,235 INFO L218 hiAutomatonCegarLoop]: Abstraction has 53570 states and 100367 transitions. [2022-11-21 13:48:36,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53570 states and 100367 transitions. [2022-11-21 13:48:37,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53570 to 17944. [2022-11-21 13:48:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17944 states, 17944 states have (on average 1.873272403031654) internal successors, (33614), 17943 states have internal predecessors, (33614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17944 states to 17944 states and 33614 transitions. [2022-11-21 13:48:37,101 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17944 states and 33614 transitions. [2022-11-21 13:48:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:37,104 INFO L428 stractBuchiCegarLoop]: Abstraction has 17944 states and 33614 transitions. [2022-11-21 13:48:37,104 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-21 13:48:37,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17944 states and 33614 transitions. [2022-11-21 13:48:37,170 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4072 [2022-11-21 13:48:37,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:48:37,177 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:48:37,180 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:37,180 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:48:37,181 INFO L748 eck$LassoCheckResult]: Stem: 391918#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(10, 4);call #Ultimate.allocInit(4, 5);call write~init~int(91, 5, 0, 1);call write~init~int(95, 5, 1, 1);call write~init~int(93, 5, 2, 1);call write~init~int(0, 5, 3, 1);call #Ultimate.allocInit(4, 6);call write~init~int(91, 6, 0, 1);call write~init~int(93, 6, 1, 1);call write~init~int(32, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(5, 7);call write~init~int(32, 7, 0, 1);call write~init~int(97, 7, 1, 1);call write~init~int(116, 7, 2, 1);call write~init~int(32, 7, 3, 1);call write~init~int(0, 7, 4, 1);call #Ultimate.allocInit(3, 8);call write~init~int(37, 8, 0, 1);call write~init~int(105, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(10, 9);call #Ultimate.allocInit(3, 10);call write~init~int(117, 10, 0, 1);call write~init~int(112, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(5, 11);call write~init~int(100, 11, 0, 1);call write~init~int(111, 11, 1, 1);call write~init~int(119, 11, 2, 1);call write~init~int(110, 11, 3, 1);call write~init~int(0, 11, 4, 1);call #Ultimate.allocInit(7, 12);call write~init~int(32, 12, 0, 1);call write~init~int(73, 12, 1, 1);call write~init~int(76, 12, 2, 1);call write~init~int(95, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(4, 13);call write~init~int(32, 13, 0, 1);call write~init~int(37, 13, 1, 1);call write~init~int(105, 13, 2, 1);call write~init~int(0, 13, 3, 1);call #Ultimate.allocInit(4, 14);call write~init~int(32, 14, 0, 1);call write~init~int(37, 14, 1, 1);call write~init~int(105, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(4, 15);call write~init~int(32, 15, 0, 1);call write~init~int(37, 15, 1, 1);call write~init~int(105, 15, 2, 1);call write~init~int(0, 15, 3, 1);call #Ultimate.allocInit(4, 16);call write~init~int(32, 16, 0, 1);call write~init~int(37, 16, 1, 1);call write~init~int(105, 16, 2, 1);call write~init~int(0, 16, 3, 1);call #Ultimate.allocInit(4, 17);call write~init~int(32, 17, 0, 1);call write~init~int(37, 17, 1, 1);call write~init~int(105, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(6, 18);call write~init~int(32, 18, 0, 1);call write~init~int(70, 18, 1, 1);call write~init~int(95, 18, 2, 1);call write~init~int(112, 18, 3, 1);call write~init~int(58, 18, 4, 1);call write~init~int(0, 18, 5, 1);call #Ultimate.allocInit(4, 19);call write~init~int(32, 19, 0, 1);call write~init~int(37, 19, 1, 1);call write~init~int(105, 19, 2, 1);call write~init~int(0, 19, 3, 1);call #Ultimate.allocInit(4, 20);call write~init~int(32, 20, 0, 1);call write~init~int(37, 20, 1, 1);call write~init~int(105, 20, 2, 1);call write~init~int(0, 20, 3, 1);call #Ultimate.allocInit(4, 21);call write~init~int(32, 21, 0, 1);call write~init~int(37, 21, 1, 1);call write~init~int(105, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(4, 22);call write~init~int(32, 22, 0, 1);call write~init~int(37, 22, 1, 1);call write~init~int(105, 22, 2, 1);call write~init~int(0, 22, 3, 1);call #Ultimate.allocInit(4, 23);call write~init~int(32, 23, 0, 1);call write~init~int(37, 23, 1, 1);call write~init~int(105, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(2, 24);call write~init~int(10, 24, 0, 1);call write~init~int(0, 24, 1, 1);call #Ultimate.allocInit(9, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(21, 28);call #Ultimate.allocInit(30, 29);call #Ultimate.allocInit(9, 30);call #Ultimate.allocInit(21, 31);call #Ultimate.allocInit(30, 32);call #Ultimate.allocInit(9, 33);call #Ultimate.allocInit(25, 34);call #Ultimate.allocInit(30, 35);call #Ultimate.allocInit(9, 36);call #Ultimate.allocInit(25, 37);~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~prevDir~0 := 0;~cleanupTimeShifts~0 := 12;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 388090#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret24#1, main_~retValue_acc~7#1, main_~tmp~9#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 387491#L2983 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 387492#L2976 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~24#1;havoc valid_product_~retValue_acc~24#1;valid_product_~retValue_acc~24#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~24#1; 394111#L2991 main_#t~ret24#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret24#1;havoc main_#t~ret24#1; 393682#L1277 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 391641#L1250 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret13#1, aliceCall_~tmp~2#1;havoc aliceCall_~tmp~2#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 384906#L95 assume !(0 == getOrigin_~person#1); 381224#L99 assume !(1 == getOrigin_~person#1); 381226#L103 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 384581#L120 aliceCall_#t~ret13#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~2#1 := aliceCall_#t~ret13#1;havoc aliceCall_#t~ret13#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~2#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 395271#L530 assume 0 == initPersonOnFloor_~floor#1; 395738#L531 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 379636#L638-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 396387#L322 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 379866#L334-2 assume { :end_inline_callOnFloor } true; 396114#L674 assume { :end_inline_initPersonOnFloor } true; 396351#L1006 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret14#1, angelinaCall_~tmp~3#1;havoc angelinaCall_~tmp~3#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 379713#L95-1 assume !(0 == getOrigin_~person#1); 379714#L99-1 assume !(1 == getOrigin_~person#1); 391988#L103-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 380469#L120-1 angelinaCall_#t~ret14#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~3#1 := angelinaCall_#t~ret14#1;havoc angelinaCall_#t~ret14#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~3#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 396844#L530-1 assume 0 == initPersonOnFloor_~floor#1; 396343#L531-2 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 379999#L638-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 385779#L322-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 380543#L334-5 assume { :end_inline_callOnFloor } true; 388097#L674-1 assume { :end_inline_initPersonOnFloor } true; 389602#L1017 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret84#1, timeShift_~tmp~24#1;havoc timeShift_~tmp~24#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret4#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~12#1;havoc getCurrentHeading_~retValue_acc~12#1;getCurrentHeading_~retValue_acc~12#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~12#1; 388431#L1680 __utac_acc__Specification13_spec__1_#t~ret4#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret4#1;havoc __utac_acc__Specification13_spec__1_#t~ret4#1; 388432#L851 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~10#1;havoc areDoorsOpen_~retValue_acc~10#1;areDoorsOpen_~retValue_acc~10#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~10#1; 397388#L1637 timeShift_#t~ret84#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~24#1 := timeShift_#t~ret84#1;havoc timeShift_#t~ret84#1; 384900#L2587 assume 0 != timeShift_~tmp~24#1; 384901#L2588 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 386473#L2587-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret5#1, __utac_acc__Specification13_spec__2_#t~ret6#1, __utac_acc__Specification13_spec__2_#t~ret7#1, __utac_acc__Specification13_spec__2_#t~ret8#1, __utac_acc__Specification13_spec__2_#t~ret9#1, __utac_acc__Specification13_spec__2_#t~ret10#1, __utac_acc__Specification13_spec__2_~tmp~0#1, __utac_acc__Specification13_spec__2_~tmp___0~0#1, __utac_acc__Specification13_spec__2_~tmp___1~0#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 389187#L869 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 387006#L870 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~22#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~22#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 387007#L2807 assume !(1 == existInLiftCallsInDirection_~d#1); 389230#L2873 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 389231#L2877-2 [2022-11-21 13:48:37,181 INFO L750 eck$LassoCheckResult]: Loop: 389231#L2877-2 assume !false; 385730#L2878 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 385731#L2879 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 384014#L2886-2 assume !false; 384015#L2887 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 384980#L2945 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 389231#L2877-2 [2022-11-21 13:48:37,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1378400671, now seen corresponding path program 1 times [2022-11-21 13:48:37,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:37,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328513936] [2022-11-21 13:48:37,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:37,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:37,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328513936] [2022-11-21 13:48:37,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328513936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:37,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:37,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:48:37,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956739278] [2022-11-21 13:48:37,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:37,299 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 13:48:37,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2078933803, now seen corresponding path program 2 times [2022-11-21 13:48:37,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:37,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947449545] [2022-11-21 13:48:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:37,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:37,305 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:48:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:37,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:48:37,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:37,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:48:37,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:37,343 INFO L87 Difference]: Start difference. First operand 17944 states and 33614 transitions. cyclomatic complexity: 15704 Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:37,937 INFO L93 Difference]: Finished difference Result 35709 states and 66901 transitions. [2022-11-21 13:48:37,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35709 states and 66901 transitions. [2022-11-21 13:48:38,419 INFO L131 ngComponentsAnalysis]: Automaton has 66 accepting balls. 8144 [2022-11-21 13:48:38,502 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35709 states to 35709 states and 66901 transitions. [2022-11-21 13:48:38,502 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35671 [2022-11-21 13:48:38,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35671 [2022-11-21 13:48:38,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35709 states and 66901 transitions. [2022-11-21 13:48:38,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:48:38,529 INFO L218 hiAutomatonCegarLoop]: Abstraction has 35709 states and 66901 transitions. [2022-11-21 13:48:38,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35709 states and 66901 transitions. [2022-11-21 13:48:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35709 to 17910. [2022-11-21 13:48:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17910 states, 17910 states have (on average 1.8730318257956449) internal successors, (33546), 17909 states have internal predecessors, (33546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:38,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17910 states to 17910 states and 33546 transitions. [2022-11-21 13:48:38,889 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17910 states and 33546 transitions. [2022-11-21 13:48:38,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:48:38,892 INFO L428 stractBuchiCegarLoop]: Abstraction has 17910 states and 33546 transitions. [2022-11-21 13:48:38,892 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-21 13:48:38,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17910 states and 33546 transitions. [2022-11-21 13:48:38,959 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4072 [2022-11-21 13:48:38,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:48:38,960 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:48:38,960 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:38,960 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:48:38,961 INFO L748 eck$LassoCheckResult]: Stem: 445559#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(10, 4);call #Ultimate.allocInit(4, 5);call write~init~int(91, 5, 0, 1);call write~init~int(95, 5, 1, 1);call write~init~int(93, 5, 2, 1);call write~init~int(0, 5, 3, 1);call #Ultimate.allocInit(4, 6);call write~init~int(91, 6, 0, 1);call write~init~int(93, 6, 1, 1);call write~init~int(32, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(5, 7);call write~init~int(32, 7, 0, 1);call write~init~int(97, 7, 1, 1);call write~init~int(116, 7, 2, 1);call write~init~int(32, 7, 3, 1);call write~init~int(0, 7, 4, 1);call #Ultimate.allocInit(3, 8);call write~init~int(37, 8, 0, 1);call write~init~int(105, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(10, 9);call #Ultimate.allocInit(3, 10);call write~init~int(117, 10, 0, 1);call write~init~int(112, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(5, 11);call write~init~int(100, 11, 0, 1);call write~init~int(111, 11, 1, 1);call write~init~int(119, 11, 2, 1);call write~init~int(110, 11, 3, 1);call write~init~int(0, 11, 4, 1);call #Ultimate.allocInit(7, 12);call write~init~int(32, 12, 0, 1);call write~init~int(73, 12, 1, 1);call write~init~int(76, 12, 2, 1);call write~init~int(95, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(4, 13);call write~init~int(32, 13, 0, 1);call write~init~int(37, 13, 1, 1);call write~init~int(105, 13, 2, 1);call write~init~int(0, 13, 3, 1);call #Ultimate.allocInit(4, 14);call write~init~int(32, 14, 0, 1);call write~init~int(37, 14, 1, 1);call write~init~int(105, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(4, 15);call write~init~int(32, 15, 0, 1);call write~init~int(37, 15, 1, 1);call write~init~int(105, 15, 2, 1);call write~init~int(0, 15, 3, 1);call #Ultimate.allocInit(4, 16);call write~init~int(32, 16, 0, 1);call write~init~int(37, 16, 1, 1);call write~init~int(105, 16, 2, 1);call write~init~int(0, 16, 3, 1);call #Ultimate.allocInit(4, 17);call write~init~int(32, 17, 0, 1);call write~init~int(37, 17, 1, 1);call write~init~int(105, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(6, 18);call write~init~int(32, 18, 0, 1);call write~init~int(70, 18, 1, 1);call write~init~int(95, 18, 2, 1);call write~init~int(112, 18, 3, 1);call write~init~int(58, 18, 4, 1);call write~init~int(0, 18, 5, 1);call #Ultimate.allocInit(4, 19);call write~init~int(32, 19, 0, 1);call write~init~int(37, 19, 1, 1);call write~init~int(105, 19, 2, 1);call write~init~int(0, 19, 3, 1);call #Ultimate.allocInit(4, 20);call write~init~int(32, 20, 0, 1);call write~init~int(37, 20, 1, 1);call write~init~int(105, 20, 2, 1);call write~init~int(0, 20, 3, 1);call #Ultimate.allocInit(4, 21);call write~init~int(32, 21, 0, 1);call write~init~int(37, 21, 1, 1);call write~init~int(105, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(4, 22);call write~init~int(32, 22, 0, 1);call write~init~int(37, 22, 1, 1);call write~init~int(105, 22, 2, 1);call write~init~int(0, 22, 3, 1);call #Ultimate.allocInit(4, 23);call write~init~int(32, 23, 0, 1);call write~init~int(37, 23, 1, 1);call write~init~int(105, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(2, 24);call write~init~int(10, 24, 0, 1);call write~init~int(0, 24, 1, 1);call #Ultimate.allocInit(9, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(21, 28);call #Ultimate.allocInit(30, 29);call #Ultimate.allocInit(9, 30);call #Ultimate.allocInit(21, 31);call #Ultimate.allocInit(30, 32);call #Ultimate.allocInit(9, 33);call #Ultimate.allocInit(25, 34);call #Ultimate.allocInit(30, 35);call #Ultimate.allocInit(9, 36);call #Ultimate.allocInit(25, 37);~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~prevDir~0 := 0;~cleanupTimeShifts~0 := 12;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 441735#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret24#1, main_~retValue_acc~7#1, main_~tmp~9#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 441136#L2983 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 441137#L2976 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~24#1;havoc valid_product_~retValue_acc~24#1;valid_product_~retValue_acc~24#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~24#1; 447752#L2991 main_#t~ret24#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret24#1;havoc main_#t~ret24#1; 447323#L1277 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 445282#L1250 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret13#1, aliceCall_~tmp~2#1;havoc aliceCall_~tmp~2#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 438557#L95 assume !(0 == getOrigin_~person#1); 434881#L99 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 434882#L120 aliceCall_#t~ret13#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~2#1 := aliceCall_#t~ret13#1;havoc aliceCall_#t~ret13#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~2#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 448909#L530 assume !(0 == initPersonOnFloor_~floor#1); 449657#L557 assume !(1 == initPersonOnFloor_~floor#1); 436860#L584 assume !(2 == initPersonOnFloor_~floor#1); 436861#L611 assume 3 == initPersonOnFloor_~floor#1; 448375#L612 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_3~0 := 1; 433295#L638-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 450017#L322 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 433525#L334-2 assume { :end_inline_callOnFloor } true; 449748#L674 assume { :end_inline_initPersonOnFloor } true; 449981#L1006 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret14#1, angelinaCall_~tmp~3#1;havoc angelinaCall_~tmp~3#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 433372#L95-1 assume !(0 == getOrigin_~person#1); 433373#L99-1 assume !(1 == getOrigin_~person#1); 445629#L103-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 434126#L120-1 angelinaCall_#t~ret14#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~3#1 := angelinaCall_#t~ret14#1;havoc angelinaCall_#t~ret14#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~3#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 451055#L530-1 assume 0 == initPersonOnFloor_~floor#1; 449975#L531-2 assume 0 == initPersonOnFloor_~person#1;~personOnFloor_0_0~0 := 1; 433658#L638-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 439428#L322-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 434200#L334-5 assume { :end_inline_callOnFloor } true; 441742#L674-1 assume { :end_inline_initPersonOnFloor } true; 443245#L1017 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret84#1, timeShift_~tmp~24#1;havoc timeShift_~tmp~24#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret4#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~12#1;havoc getCurrentHeading_~retValue_acc~12#1;getCurrentHeading_~retValue_acc~12#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~12#1; 442076#L1680 __utac_acc__Specification13_spec__1_#t~ret4#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret4#1;havoc __utac_acc__Specification13_spec__1_#t~ret4#1; 442077#L851 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~10#1;havoc areDoorsOpen_~retValue_acc~10#1;areDoorsOpen_~retValue_acc~10#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~10#1; 451016#L1637 timeShift_#t~ret84#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~24#1 := timeShift_#t~ret84#1;havoc timeShift_#t~ret84#1; 438551#L2587 assume 0 != timeShift_~tmp~24#1; 438552#L2588 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 440120#L2587-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret5#1, __utac_acc__Specification13_spec__2_#t~ret6#1, __utac_acc__Specification13_spec__2_#t~ret7#1, __utac_acc__Specification13_spec__2_#t~ret8#1, __utac_acc__Specification13_spec__2_#t~ret9#1, __utac_acc__Specification13_spec__2_#t~ret10#1, __utac_acc__Specification13_spec__2_~tmp~0#1, __utac_acc__Specification13_spec__2_~tmp___0~0#1, __utac_acc__Specification13_spec__2_~tmp___1~0#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 442830#L869 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 440653#L870 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~22#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~22#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 440654#L2807 assume !(1 == existInLiftCallsInDirection_~d#1); 442873#L2873 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 442874#L2877-2 [2022-11-21 13:48:38,962 INFO L750 eck$LassoCheckResult]: Loop: 442874#L2877-2 assume !false; 439379#L2878 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 439380#L2879 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 437668#L2886-2 assume !false; 437669#L2887 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 438631#L2945 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 442874#L2877-2 [2022-11-21 13:48:38,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:38,963 INFO L85 PathProgramCache]: Analyzing trace with hash 368657234, now seen corresponding path program 1 times [2022-11-21 13:48:38,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:38,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665701853] [2022-11-21 13:48:38,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:38,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:39,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:39,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665701853] [2022-11-21 13:48:39,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665701853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:39,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:39,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:48:39,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906357404] [2022-11-21 13:48:39,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:39,113 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 13:48:39,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:39,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2078933803, now seen corresponding path program 3 times [2022-11-21 13:48:39,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:39,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166233404] [2022-11-21 13:48:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:39,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:39,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:48:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:39,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:48:39,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:39,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:48:39,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:48:39,155 INFO L87 Difference]: Start difference. First operand 17910 states and 33546 transitions. cyclomatic complexity: 15670 Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:40,303 INFO L93 Difference]: Finished difference Result 25046 states and 46910 transitions. [2022-11-21 13:48:40,304 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25046 states and 46910 transitions. [2022-11-21 13:48:40,414 INFO L131 ngComponentsAnalysis]: Automaton has 42 accepting balls. 7780 [2022-11-21 13:48:40,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25046 states to 25046 states and 46910 transitions. [2022-11-21 13:48:40,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25027 [2022-11-21 13:48:40,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25027 [2022-11-21 13:48:40,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25046 states and 46910 transitions. [2022-11-21 13:48:40,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:48:40,550 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25046 states and 46910 transitions. [2022-11-21 13:48:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25046 states and 46910 transitions. [2022-11-21 13:48:40,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25046 to 17910. [2022-11-21 13:48:40,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17910 states, 17910 states have (on average 1.8726968174204355) internal successors, (33540), 17909 states have internal predecessors, (33540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17910 states to 17910 states and 33540 transitions. [2022-11-21 13:48:40,945 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17910 states and 33540 transitions. [2022-11-21 13:48:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:40,948 INFO L428 stractBuchiCegarLoop]: Abstraction has 17910 states and 33540 transitions. [2022-11-21 13:48:40,949 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-21 13:48:40,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17910 states and 33540 transitions. [2022-11-21 13:48:41,039 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4072 [2022-11-21 13:48:41,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:48:41,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:48:41,042 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:41,043 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:48:41,044 INFO L748 eck$LassoCheckResult]: Stem: 488527#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(10, 4);call #Ultimate.allocInit(4, 5);call write~init~int(91, 5, 0, 1);call write~init~int(95, 5, 1, 1);call write~init~int(93, 5, 2, 1);call write~init~int(0, 5, 3, 1);call #Ultimate.allocInit(4, 6);call write~init~int(91, 6, 0, 1);call write~init~int(93, 6, 1, 1);call write~init~int(32, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(5, 7);call write~init~int(32, 7, 0, 1);call write~init~int(97, 7, 1, 1);call write~init~int(116, 7, 2, 1);call write~init~int(32, 7, 3, 1);call write~init~int(0, 7, 4, 1);call #Ultimate.allocInit(3, 8);call write~init~int(37, 8, 0, 1);call write~init~int(105, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(10, 9);call #Ultimate.allocInit(3, 10);call write~init~int(117, 10, 0, 1);call write~init~int(112, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(5, 11);call write~init~int(100, 11, 0, 1);call write~init~int(111, 11, 1, 1);call write~init~int(119, 11, 2, 1);call write~init~int(110, 11, 3, 1);call write~init~int(0, 11, 4, 1);call #Ultimate.allocInit(7, 12);call write~init~int(32, 12, 0, 1);call write~init~int(73, 12, 1, 1);call write~init~int(76, 12, 2, 1);call write~init~int(95, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(4, 13);call write~init~int(32, 13, 0, 1);call write~init~int(37, 13, 1, 1);call write~init~int(105, 13, 2, 1);call write~init~int(0, 13, 3, 1);call #Ultimate.allocInit(4, 14);call write~init~int(32, 14, 0, 1);call write~init~int(37, 14, 1, 1);call write~init~int(105, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(4, 15);call write~init~int(32, 15, 0, 1);call write~init~int(37, 15, 1, 1);call write~init~int(105, 15, 2, 1);call write~init~int(0, 15, 3, 1);call #Ultimate.allocInit(4, 16);call write~init~int(32, 16, 0, 1);call write~init~int(37, 16, 1, 1);call write~init~int(105, 16, 2, 1);call write~init~int(0, 16, 3, 1);call #Ultimate.allocInit(4, 17);call write~init~int(32, 17, 0, 1);call write~init~int(37, 17, 1, 1);call write~init~int(105, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(6, 18);call write~init~int(32, 18, 0, 1);call write~init~int(70, 18, 1, 1);call write~init~int(95, 18, 2, 1);call write~init~int(112, 18, 3, 1);call write~init~int(58, 18, 4, 1);call write~init~int(0, 18, 5, 1);call #Ultimate.allocInit(4, 19);call write~init~int(32, 19, 0, 1);call write~init~int(37, 19, 1, 1);call write~init~int(105, 19, 2, 1);call write~init~int(0, 19, 3, 1);call #Ultimate.allocInit(4, 20);call write~init~int(32, 20, 0, 1);call write~init~int(37, 20, 1, 1);call write~init~int(105, 20, 2, 1);call write~init~int(0, 20, 3, 1);call #Ultimate.allocInit(4, 21);call write~init~int(32, 21, 0, 1);call write~init~int(37, 21, 1, 1);call write~init~int(105, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(4, 22);call write~init~int(32, 22, 0, 1);call write~init~int(37, 22, 1, 1);call write~init~int(105, 22, 2, 1);call write~init~int(0, 22, 3, 1);call #Ultimate.allocInit(4, 23);call write~init~int(32, 23, 0, 1);call write~init~int(37, 23, 1, 1);call write~init~int(105, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(2, 24);call write~init~int(10, 24, 0, 1);call write~init~int(0, 24, 1, 1);call #Ultimate.allocInit(9, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(21, 28);call #Ultimate.allocInit(30, 29);call #Ultimate.allocInit(9, 30);call #Ultimate.allocInit(21, 31);call #Ultimate.allocInit(30, 32);call #Ultimate.allocInit(9, 33);call #Ultimate.allocInit(25, 34);call #Ultimate.allocInit(30, 35);call #Ultimate.allocInit(9, 36);call #Ultimate.allocInit(25, 37);~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~prevDir~0 := 0;~cleanupTimeShifts~0 := 12;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 484703#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret24#1, main_~retValue_acc~7#1, main_~tmp~9#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 484104#L2983 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 484105#L2976 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~24#1;havoc valid_product_~retValue_acc~24#1;valid_product_~retValue_acc~24#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~24#1; 490721#L2991 main_#t~ret24#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret24#1;havoc main_#t~ret24#1; 490291#L1277 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 488250#L1250 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret13#1, aliceCall_~tmp~2#1;havoc aliceCall_~tmp~2#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 481526#L95 assume !(0 == getOrigin_~person#1); 477853#L99 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 477854#L120 aliceCall_#t~ret13#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~2#1 := aliceCall_#t~ret13#1;havoc aliceCall_#t~ret13#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~2#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 491878#L530 assume !(0 == initPersonOnFloor_~floor#1); 492626#L557 assume !(1 == initPersonOnFloor_~floor#1); 479829#L584 assume !(2 == initPersonOnFloor_~floor#1); 479830#L611 assume 3 == initPersonOnFloor_~floor#1; 491344#L612 assume !(0 == initPersonOnFloor_~person#1); 491345#L615 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 476264#L638-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 492986#L322 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 476494#L334-2 assume { :end_inline_callOnFloor } true; 492717#L674 assume { :end_inline_initPersonOnFloor } true; 492950#L1006 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret14#1, angelinaCall_~tmp~3#1;havoc angelinaCall_~tmp~3#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 476341#L95-1 assume !(0 == getOrigin_~person#1); 476342#L99-1 assume !(1 == getOrigin_~person#1); 488597#L103-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 477095#L120-1 angelinaCall_#t~ret14#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~3#1 := angelinaCall_#t~ret14#1;havoc angelinaCall_#t~ret14#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~3#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 494025#L530-1 assume 0 == initPersonOnFloor_~floor#1; 492944#L531-2 assume !(0 == initPersonOnFloor_~person#1); 492779#L534-2 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_0~0 := 1; 476627#L638-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 482397#L322-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 477169#L334-5 assume { :end_inline_callOnFloor } true; 484710#L674-1 assume { :end_inline_initPersonOnFloor } true; 486213#L1017 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret84#1, timeShift_~tmp~24#1;havoc timeShift_~tmp~24#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret4#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~12#1;havoc getCurrentHeading_~retValue_acc~12#1;getCurrentHeading_~retValue_acc~12#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~12#1; 485044#L1680 __utac_acc__Specification13_spec__1_#t~ret4#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret4#1;havoc __utac_acc__Specification13_spec__1_#t~ret4#1; 485045#L851 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~10#1;havoc areDoorsOpen_~retValue_acc~10#1;areDoorsOpen_~retValue_acc~10#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~10#1; 493986#L1637 timeShift_#t~ret84#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~24#1 := timeShift_#t~ret84#1;havoc timeShift_#t~ret84#1; 481520#L2587 assume 0 != timeShift_~tmp~24#1; 481521#L2588 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 483088#L2587-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret5#1, __utac_acc__Specification13_spec__2_#t~ret6#1, __utac_acc__Specification13_spec__2_#t~ret7#1, __utac_acc__Specification13_spec__2_#t~ret8#1, __utac_acc__Specification13_spec__2_#t~ret9#1, __utac_acc__Specification13_spec__2_#t~ret10#1, __utac_acc__Specification13_spec__2_~tmp~0#1, __utac_acc__Specification13_spec__2_~tmp___0~0#1, __utac_acc__Specification13_spec__2_~tmp___1~0#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 485798#L869 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 483623#L870 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~22#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~22#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 483624#L2807 assume !(1 == existInLiftCallsInDirection_~d#1); 485841#L2873 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 485842#L2877-2 [2022-11-21 13:48:41,044 INFO L750 eck$LassoCheckResult]: Loop: 485842#L2877-2 assume !false; 482350#L2878 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 482351#L2879 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 480637#L2886-2 assume !false; 480638#L2887 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 481602#L2945 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 485842#L2877-2 [2022-11-21 13:48:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:41,045 INFO L85 PathProgramCache]: Analyzing trace with hash 590101782, now seen corresponding path program 1 times [2022-11-21 13:48:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:41,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507420422] [2022-11-21 13:48:41,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:41,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:41,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:41,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:41,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507420422] [2022-11-21 13:48:41,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507420422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:41,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:41,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:48:41,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3826015] [2022-11-21 13:48:41,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:41,159 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 13:48:41,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:41,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2078933803, now seen corresponding path program 4 times [2022-11-21 13:48:41,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:41,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732548397] [2022-11-21 13:48:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:41,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:41,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:48:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:41,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:48:41,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:41,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:48:41,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:48:41,195 INFO L87 Difference]: Start difference. First operand 17910 states and 33540 transitions. cyclomatic complexity: 15664 Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:42,517 INFO L93 Difference]: Finished difference Result 53529 states and 100281 transitions. [2022-11-21 13:48:42,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53529 states and 100281 transitions. [2022-11-21 13:48:42,995 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 12216 [2022-11-21 13:48:43,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53529 states to 53529 states and 100281 transitions. [2022-11-21 13:48:43,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53472 [2022-11-21 13:48:43,185 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53472 [2022-11-21 13:48:43,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53529 states and 100281 transitions. [2022-11-21 13:48:43,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:48:43,206 INFO L218 hiAutomatonCegarLoop]: Abstraction has 53529 states and 100281 transitions. [2022-11-21 13:48:43,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53529 states and 100281 transitions. [2022-11-21 13:48:43,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53529 to 17914. [2022-11-21 13:48:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17914 states, 17914 states have (on average 1.8724461315172491) internal successors, (33543), 17913 states have internal predecessors, (33543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17914 states to 17914 states and 33543 transitions. [2022-11-21 13:48:43,640 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17914 states and 33543 transitions. [2022-11-21 13:48:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:43,643 INFO L428 stractBuchiCegarLoop]: Abstraction has 17914 states and 33543 transitions. [2022-11-21 13:48:43,643 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-21 13:48:43,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17914 states and 33543 transitions. [2022-11-21 13:48:43,709 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4072 [2022-11-21 13:48:43,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:48:43,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:48:43,712 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:43,713 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:48:43,714 INFO L748 eck$LassoCheckResult]: Stem: 559978#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(10, 4);call #Ultimate.allocInit(4, 5);call write~init~int(91, 5, 0, 1);call write~init~int(95, 5, 1, 1);call write~init~int(93, 5, 2, 1);call write~init~int(0, 5, 3, 1);call #Ultimate.allocInit(4, 6);call write~init~int(91, 6, 0, 1);call write~init~int(93, 6, 1, 1);call write~init~int(32, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(5, 7);call write~init~int(32, 7, 0, 1);call write~init~int(97, 7, 1, 1);call write~init~int(116, 7, 2, 1);call write~init~int(32, 7, 3, 1);call write~init~int(0, 7, 4, 1);call #Ultimate.allocInit(3, 8);call write~init~int(37, 8, 0, 1);call write~init~int(105, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(10, 9);call #Ultimate.allocInit(3, 10);call write~init~int(117, 10, 0, 1);call write~init~int(112, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(5, 11);call write~init~int(100, 11, 0, 1);call write~init~int(111, 11, 1, 1);call write~init~int(119, 11, 2, 1);call write~init~int(110, 11, 3, 1);call write~init~int(0, 11, 4, 1);call #Ultimate.allocInit(7, 12);call write~init~int(32, 12, 0, 1);call write~init~int(73, 12, 1, 1);call write~init~int(76, 12, 2, 1);call write~init~int(95, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(4, 13);call write~init~int(32, 13, 0, 1);call write~init~int(37, 13, 1, 1);call write~init~int(105, 13, 2, 1);call write~init~int(0, 13, 3, 1);call #Ultimate.allocInit(4, 14);call write~init~int(32, 14, 0, 1);call write~init~int(37, 14, 1, 1);call write~init~int(105, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(4, 15);call write~init~int(32, 15, 0, 1);call write~init~int(37, 15, 1, 1);call write~init~int(105, 15, 2, 1);call write~init~int(0, 15, 3, 1);call #Ultimate.allocInit(4, 16);call write~init~int(32, 16, 0, 1);call write~init~int(37, 16, 1, 1);call write~init~int(105, 16, 2, 1);call write~init~int(0, 16, 3, 1);call #Ultimate.allocInit(4, 17);call write~init~int(32, 17, 0, 1);call write~init~int(37, 17, 1, 1);call write~init~int(105, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(6, 18);call write~init~int(32, 18, 0, 1);call write~init~int(70, 18, 1, 1);call write~init~int(95, 18, 2, 1);call write~init~int(112, 18, 3, 1);call write~init~int(58, 18, 4, 1);call write~init~int(0, 18, 5, 1);call #Ultimate.allocInit(4, 19);call write~init~int(32, 19, 0, 1);call write~init~int(37, 19, 1, 1);call write~init~int(105, 19, 2, 1);call write~init~int(0, 19, 3, 1);call #Ultimate.allocInit(4, 20);call write~init~int(32, 20, 0, 1);call write~init~int(37, 20, 1, 1);call write~init~int(105, 20, 2, 1);call write~init~int(0, 20, 3, 1);call #Ultimate.allocInit(4, 21);call write~init~int(32, 21, 0, 1);call write~init~int(37, 21, 1, 1);call write~init~int(105, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(4, 22);call write~init~int(32, 22, 0, 1);call write~init~int(37, 22, 1, 1);call write~init~int(105, 22, 2, 1);call write~init~int(0, 22, 3, 1);call #Ultimate.allocInit(4, 23);call write~init~int(32, 23, 0, 1);call write~init~int(37, 23, 1, 1);call write~init~int(105, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(2, 24);call write~init~int(10, 24, 0, 1);call write~init~int(0, 24, 1, 1);call #Ultimate.allocInit(9, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(21, 28);call #Ultimate.allocInit(30, 29);call #Ultimate.allocInit(9, 30);call #Ultimate.allocInit(21, 31);call #Ultimate.allocInit(30, 32);call #Ultimate.allocInit(9, 33);call #Ultimate.allocInit(25, 34);call #Ultimate.allocInit(30, 35);call #Ultimate.allocInit(9, 36);call #Ultimate.allocInit(25, 37);~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~prevDir~0 := 0;~cleanupTimeShifts~0 := 12;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 556154#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret24#1, main_~retValue_acc~7#1, main_~tmp~9#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 555555#L2983 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 555556#L2976 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~24#1;havoc valid_product_~retValue_acc~24#1;valid_product_~retValue_acc~24#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~24#1; 562172#L2991 main_#t~ret24#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret24#1;havoc main_#t~ret24#1; 561742#L1277 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 559701#L1250 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret13#1, aliceCall_~tmp~2#1;havoc aliceCall_~tmp~2#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 552974#L95 assume !(0 == getOrigin_~person#1); 549301#L99 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 549302#L120 aliceCall_#t~ret13#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~2#1 := aliceCall_#t~ret13#1;havoc aliceCall_#t~ret13#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~2#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 563329#L530 assume !(0 == initPersonOnFloor_~floor#1); 564077#L557 assume !(1 == initPersonOnFloor_~floor#1); 551277#L584 assume !(2 == initPersonOnFloor_~floor#1); 551278#L611 assume 3 == initPersonOnFloor_~floor#1; 562795#L612 assume !(0 == initPersonOnFloor_~person#1); 562796#L615 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 547712#L638-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 564437#L322 assume !(0 == callOnFloor_~floorID#1); 548118#L325 assume 1 == callOnFloor_~floorID#1;~calls_1~0 := 1; 547942#L334-2 assume { :end_inline_callOnFloor } true; 564168#L674 assume { :end_inline_initPersonOnFloor } true; 564401#L1006 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret14#1, angelinaCall_~tmp~3#1;havoc angelinaCall_~tmp~3#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 547789#L95-1 assume !(0 == getOrigin_~person#1); 547790#L99-1 assume !(1 == getOrigin_~person#1); 560048#L103-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 548543#L120-1 angelinaCall_#t~ret14#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~3#1 := angelinaCall_#t~ret14#1;havoc angelinaCall_#t~ret14#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~3#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 564894#L530-1 assume 0 == initPersonOnFloor_~floor#1; 564395#L531-2 assume !(0 == initPersonOnFloor_~person#1); 564230#L534-2 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_0~0 := 1; 553867#L638-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 562596#L322-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 548617#L334-5 assume { :end_inline_callOnFloor } true; 556161#L674-1 assume { :end_inline_initPersonOnFloor } true; 557664#L1017 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret84#1, timeShift_~tmp~24#1;havoc timeShift_~tmp~24#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret4#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~12#1;havoc getCurrentHeading_~retValue_acc~12#1;getCurrentHeading_~retValue_acc~12#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~12#1; 556495#L1680 __utac_acc__Specification13_spec__1_#t~ret4#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret4#1;havoc __utac_acc__Specification13_spec__1_#t~ret4#1; 556496#L851 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~10#1;havoc areDoorsOpen_~retValue_acc~10#1;areDoorsOpen_~retValue_acc~10#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~10#1; 565437#L1637 timeShift_#t~ret84#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~24#1 := timeShift_#t~ret84#1;havoc timeShift_#t~ret84#1; 552968#L2587 assume 0 != timeShift_~tmp~24#1; 552969#L2588 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 554538#L2587-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret5#1, __utac_acc__Specification13_spec__2_#t~ret6#1, __utac_acc__Specification13_spec__2_#t~ret7#1, __utac_acc__Specification13_spec__2_#t~ret8#1, __utac_acc__Specification13_spec__2_#t~ret9#1, __utac_acc__Specification13_spec__2_#t~ret10#1, __utac_acc__Specification13_spec__2_~tmp~0#1, __utac_acc__Specification13_spec__2_~tmp___0~0#1, __utac_acc__Specification13_spec__2_~tmp___1~0#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 557249#L869 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 555073#L870 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~22#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~22#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 555074#L2807 assume !(1 == existInLiftCallsInDirection_~d#1); 557292#L2873 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 557293#L2877-2 [2022-11-21 13:48:43,715 INFO L750 eck$LassoCheckResult]: Loop: 557293#L2877-2 assume !false; 553796#L2878 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 553797#L2879 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 552085#L2886-2 assume !false; 552086#L2887 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 553050#L2945 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 557293#L2877-2 [2022-11-21 13:48:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1215423119, now seen corresponding path program 1 times [2022-11-21 13:48:43,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:43,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762100236] [2022-11-21 13:48:43,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:43,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:43,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762100236] [2022-11-21 13:48:43,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762100236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:43,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:43,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:48:43,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678677269] [2022-11-21 13:48:43,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:43,835 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 13:48:43,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:43,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2078933803, now seen corresponding path program 5 times [2022-11-21 13:48:43,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:43,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320204643] [2022-11-21 13:48:43,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:43,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:43,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:48:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:43,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:48:43,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:43,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:48:43,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:48:43,862 INFO L87 Difference]: Start difference. First operand 17914 states and 33543 transitions. cyclomatic complexity: 15663 Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:44,970 INFO L93 Difference]: Finished difference Result 53534 states and 100283 transitions. [2022-11-21 13:48:44,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53534 states and 100283 transitions. [2022-11-21 13:48:45,142 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 12216 [2022-11-21 13:48:45,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53534 states to 53534 states and 100283 transitions. [2022-11-21 13:48:45,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53477 [2022-11-21 13:48:45,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53477 [2022-11-21 13:48:45,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53534 states and 100283 transitions. [2022-11-21 13:48:45,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:48:45,704 INFO L218 hiAutomatonCegarLoop]: Abstraction has 53534 states and 100283 transitions. [2022-11-21 13:48:45,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53534 states and 100283 transitions. [2022-11-21 13:48:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53534 to 17920. [2022-11-21 13:48:46,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17920 states, 17920 states have (on average 1.8720982142857143) internal successors, (33548), 17919 states have internal predecessors, (33548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:46,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17920 states to 17920 states and 33548 transitions. [2022-11-21 13:48:46,163 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17920 states and 33548 transitions. [2022-11-21 13:48:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:46,164 INFO L428 stractBuchiCegarLoop]: Abstraction has 17920 states and 33548 transitions. [2022-11-21 13:48:46,165 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-21 13:48:46,165 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17920 states and 33548 transitions. [2022-11-21 13:48:46,230 INFO L131 ngComponentsAnalysis]: Automaton has 33 accepting balls. 4072 [2022-11-21 13:48:46,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:48:46,230 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:48:46,231 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:46,231 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:48:46,232 INFO L748 eck$LassoCheckResult]: Stem: 631438#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(32, 2);call #Ultimate.allocInit(12, 3);call #Ultimate.allocInit(10, 4);call #Ultimate.allocInit(4, 5);call write~init~int(91, 5, 0, 1);call write~init~int(95, 5, 1, 1);call write~init~int(93, 5, 2, 1);call write~init~int(0, 5, 3, 1);call #Ultimate.allocInit(4, 6);call write~init~int(91, 6, 0, 1);call write~init~int(93, 6, 1, 1);call write~init~int(32, 6, 2, 1);call write~init~int(0, 6, 3, 1);call #Ultimate.allocInit(5, 7);call write~init~int(32, 7, 0, 1);call write~init~int(97, 7, 1, 1);call write~init~int(116, 7, 2, 1);call write~init~int(32, 7, 3, 1);call write~init~int(0, 7, 4, 1);call #Ultimate.allocInit(3, 8);call write~init~int(37, 8, 0, 1);call write~init~int(105, 8, 1, 1);call write~init~int(0, 8, 2, 1);call #Ultimate.allocInit(10, 9);call #Ultimate.allocInit(3, 10);call write~init~int(117, 10, 0, 1);call write~init~int(112, 10, 1, 1);call write~init~int(0, 10, 2, 1);call #Ultimate.allocInit(5, 11);call write~init~int(100, 11, 0, 1);call write~init~int(111, 11, 1, 1);call write~init~int(119, 11, 2, 1);call write~init~int(110, 11, 3, 1);call write~init~int(0, 11, 4, 1);call #Ultimate.allocInit(7, 12);call write~init~int(32, 12, 0, 1);call write~init~int(73, 12, 1, 1);call write~init~int(76, 12, 2, 1);call write~init~int(95, 12, 3, 1);call write~init~int(112, 12, 4, 1);call write~init~int(58, 12, 5, 1);call write~init~int(0, 12, 6, 1);call #Ultimate.allocInit(4, 13);call write~init~int(32, 13, 0, 1);call write~init~int(37, 13, 1, 1);call write~init~int(105, 13, 2, 1);call write~init~int(0, 13, 3, 1);call #Ultimate.allocInit(4, 14);call write~init~int(32, 14, 0, 1);call write~init~int(37, 14, 1, 1);call write~init~int(105, 14, 2, 1);call write~init~int(0, 14, 3, 1);call #Ultimate.allocInit(4, 15);call write~init~int(32, 15, 0, 1);call write~init~int(37, 15, 1, 1);call write~init~int(105, 15, 2, 1);call write~init~int(0, 15, 3, 1);call #Ultimate.allocInit(4, 16);call write~init~int(32, 16, 0, 1);call write~init~int(37, 16, 1, 1);call write~init~int(105, 16, 2, 1);call write~init~int(0, 16, 3, 1);call #Ultimate.allocInit(4, 17);call write~init~int(32, 17, 0, 1);call write~init~int(37, 17, 1, 1);call write~init~int(105, 17, 2, 1);call write~init~int(0, 17, 3, 1);call #Ultimate.allocInit(6, 18);call write~init~int(32, 18, 0, 1);call write~init~int(70, 18, 1, 1);call write~init~int(95, 18, 2, 1);call write~init~int(112, 18, 3, 1);call write~init~int(58, 18, 4, 1);call write~init~int(0, 18, 5, 1);call #Ultimate.allocInit(4, 19);call write~init~int(32, 19, 0, 1);call write~init~int(37, 19, 1, 1);call write~init~int(105, 19, 2, 1);call write~init~int(0, 19, 3, 1);call #Ultimate.allocInit(4, 20);call write~init~int(32, 20, 0, 1);call write~init~int(37, 20, 1, 1);call write~init~int(105, 20, 2, 1);call write~init~int(0, 20, 3, 1);call #Ultimate.allocInit(4, 21);call write~init~int(32, 21, 0, 1);call write~init~int(37, 21, 1, 1);call write~init~int(105, 21, 2, 1);call write~init~int(0, 21, 3, 1);call #Ultimate.allocInit(4, 22);call write~init~int(32, 22, 0, 1);call write~init~int(37, 22, 1, 1);call write~init~int(105, 22, 2, 1);call write~init~int(0, 22, 3, 1);call #Ultimate.allocInit(4, 23);call write~init~int(32, 23, 0, 1);call write~init~int(37, 23, 1, 1);call write~init~int(105, 23, 2, 1);call write~init~int(0, 23, 3, 1);call #Ultimate.allocInit(2, 24);call write~init~int(10, 24, 0, 1);call write~init~int(0, 24, 1, 1);call #Ultimate.allocInit(9, 25);call #Ultimate.allocInit(30, 26);call #Ultimate.allocInit(9, 27);call #Ultimate.allocInit(21, 28);call #Ultimate.allocInit(30, 29);call #Ultimate.allocInit(9, 30);call #Ultimate.allocInit(21, 31);call #Ultimate.allocInit(30, 32);call #Ultimate.allocInit(9, 33);call #Ultimate.allocInit(25, 34);call #Ultimate.allocInit(30, 35);call #Ultimate.allocInit(9, 36);call #Ultimate.allocInit(25, 37);~calls_0~0 := 0;~calls_1~0 := 0;~calls_2~0 := 0;~calls_3~0 := 0;~calls_4~0 := 0;~personOnFloor_0_0~0 := 0;~personOnFloor_0_1~0 := 0;~personOnFloor_0_2~0 := 0;~personOnFloor_0_3~0 := 0;~personOnFloor_0_4~0 := 0;~personOnFloor_1_0~0 := 0;~personOnFloor_1_1~0 := 0;~personOnFloor_1_2~0 := 0;~personOnFloor_1_3~0 := 0;~personOnFloor_1_4~0 := 0;~personOnFloor_2_0~0 := 0;~personOnFloor_2_1~0 := 0;~personOnFloor_2_2~0 := 0;~personOnFloor_2_3~0 := 0;~personOnFloor_2_4~0 := 0;~personOnFloor_3_0~0 := 0;~personOnFloor_3_1~0 := 0;~personOnFloor_3_2~0 := 0;~personOnFloor_3_3~0 := 0;~personOnFloor_3_4~0 := 0;~personOnFloor_4_0~0 := 0;~personOnFloor_4_1~0 := 0;~personOnFloor_4_2~0 := 0;~personOnFloor_4_3~0 := 0;~personOnFloor_4_4~0 := 0;~personOnFloor_5_0~0 := 0;~personOnFloor_5_1~0 := 0;~personOnFloor_5_2~0 := 0;~personOnFloor_5_3~0 := 0;~personOnFloor_5_4~0 := 0;~weight~0 := 0;~maximumWeight~0 := 100;~blocked~0 := 0;~prevDir~0 := 0;~cleanupTimeShifts~0 := 12;~currentHeading~0 := 1;~currentFloorID~0 := 0;~persons_0~0 := 0;~persons_1~0 := 0;~persons_2~0 := 0;~persons_3~0 := 0;~persons_4~0 := 0;~persons_5~0 := 0;~doorState~0 := 1;~floorButtons_0~0 := 0;~floorButtons_1~0 := 0;~floorButtons_2~0 := 0;~floorButtons_3~0 := 0;~floorButtons_4~0 := 0;~head~0.base, ~head~0.offset := 0, 0; 627613#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret24#1, main_~retValue_acc~7#1, main_~tmp~9#1;havoc main_~retValue_acc~7#1;havoc main_~tmp~9#1;assume { :begin_inline_select_helpers } true; 627014#L2983 assume { :end_inline_select_helpers } true;assume { :begin_inline_select_features } true; 627015#L2976 assume { :end_inline_select_features } true;assume { :begin_inline_valid_product } true;havoc valid_product_#res#1;havoc valid_product_~retValue_acc~24#1;havoc valid_product_~retValue_acc~24#1;valid_product_~retValue_acc~24#1 := 1;valid_product_#res#1 := valid_product_~retValue_acc~24#1; 633631#L2991 main_#t~ret24#1 := valid_product_#res#1;assume { :end_inline_valid_product } true;main_~tmp~9#1 := main_#t~ret24#1;havoc main_#t~ret24#1; 633202#L1277 assume 0 != main_~tmp~9#1;assume { :begin_inline_setup } true; 631161#L1250 assume { :end_inline_setup } true;assume { :begin_inline_runTest } true;assume { :begin_inline_test } true;assume { :begin_inline_aliceCall } true;havoc aliceCall_#t~ret13#1, aliceCall_~tmp~2#1;havoc aliceCall_~tmp~2#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 1;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 624432#L95 assume !(0 == getOrigin_~person#1); 620754#L99 assume 1 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 3;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 620755#L120 aliceCall_#t~ret13#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;aliceCall_~tmp~2#1 := aliceCall_#t~ret13#1;havoc aliceCall_#t~ret13#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 1, aliceCall_~tmp~2#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 634788#L530 assume !(0 == initPersonOnFloor_~floor#1); 635536#L557 assume !(1 == initPersonOnFloor_~floor#1); 622733#L584 assume !(2 == initPersonOnFloor_~floor#1); 622734#L611 assume 3 == initPersonOnFloor_~floor#1; 634254#L612 assume !(0 == initPersonOnFloor_~person#1); 634255#L615 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_3~0 := 1; 619169#L638-1 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 635896#L322 assume !(0 == callOnFloor_~floorID#1); 619575#L325 assume !(1 == callOnFloor_~floorID#1); 619576#L328 assume 2 == callOnFloor_~floorID#1;~calls_2~0 := 1; 619399#L334-2 assume { :end_inline_callOnFloor } true; 635627#L674 assume { :end_inline_initPersonOnFloor } true; 635860#L1006 assume { :end_inline_aliceCall } true;assume { :begin_inline_angelinaCall } true;havoc angelinaCall_#t~ret14#1, angelinaCall_~tmp~3#1;havoc angelinaCall_~tmp~3#1;assume { :begin_inline_getOrigin } true;getOrigin_#in~person#1 := 2;havoc getOrigin_#res#1;havoc getOrigin_~person#1, getOrigin_~retValue_acc~1#1;getOrigin_~person#1 := getOrigin_#in~person#1;havoc getOrigin_~retValue_acc~1#1; 619246#L95-1 assume !(0 == getOrigin_~person#1); 619247#L99-1 assume !(1 == getOrigin_~person#1); 631508#L103-1 assume 2 == getOrigin_~person#1;getOrigin_~retValue_acc~1#1 := 2;getOrigin_#res#1 := getOrigin_~retValue_acc~1#1; 620000#L120-1 angelinaCall_#t~ret14#1 := getOrigin_#res#1;assume { :end_inline_getOrigin } true;angelinaCall_~tmp~3#1 := angelinaCall_#t~ret14#1;havoc angelinaCall_#t~ret14#1;assume { :begin_inline_initPersonOnFloor } true;initPersonOnFloor_#in~person#1, initPersonOnFloor_#in~floor#1 := 2, angelinaCall_~tmp~3#1;havoc initPersonOnFloor_~person#1, initPersonOnFloor_~floor#1;initPersonOnFloor_~person#1 := initPersonOnFloor_#in~person#1;initPersonOnFloor_~floor#1 := initPersonOnFloor_#in~floor#1; 636353#L530-1 assume 0 == initPersonOnFloor_~floor#1; 635854#L531-2 assume !(0 == initPersonOnFloor_~person#1); 635689#L534-2 assume 1 == initPersonOnFloor_~person#1;~personOnFloor_1_0~0 := 1; 625326#L638-3 assume { :begin_inline_callOnFloor } true;callOnFloor_#in~floorID#1 := initPersonOnFloor_~floor#1;havoc callOnFloor_~floorID#1;callOnFloor_~floorID#1 := callOnFloor_#in~floorID#1; 636946#L322-2 assume 0 == callOnFloor_~floorID#1;~calls_0~0 := 1; 623559#L334-5 assume { :end_inline_callOnFloor } true; 627620#L674-1 assume { :end_inline_initPersonOnFloor } true; 629123#L1017 assume { :end_inline_angelinaCall } true;assume { :begin_inline_threeTS } true;assume { :begin_inline_timeShift } true;havoc timeShift_#t~ret84#1, timeShift_~tmp~24#1;havoc timeShift_~tmp~24#1;assume { :begin_inline___utac_acc__Specification13_spec__1 } true;havoc __utac_acc__Specification13_spec__1_#t~ret4#1;assume { :begin_inline_getCurrentHeading } true;havoc getCurrentHeading_#res#1;havoc getCurrentHeading_~retValue_acc~12#1;havoc getCurrentHeading_~retValue_acc~12#1;getCurrentHeading_~retValue_acc~12#1 := ~currentHeading~0;getCurrentHeading_#res#1 := getCurrentHeading_~retValue_acc~12#1; 627954#L1680 __utac_acc__Specification13_spec__1_#t~ret4#1 := getCurrentHeading_#res#1;assume { :end_inline_getCurrentHeading } true;~prevDir~0 := __utac_acc__Specification13_spec__1_#t~ret4#1;havoc __utac_acc__Specification13_spec__1_#t~ret4#1; 627955#L851 assume { :end_inline___utac_acc__Specification13_spec__1 } true;assume { :begin_inline_areDoorsOpen } true;havoc areDoorsOpen_#res#1;havoc areDoorsOpen_~retValue_acc~10#1;havoc areDoorsOpen_~retValue_acc~10#1;areDoorsOpen_~retValue_acc~10#1 := ~doorState~0;areDoorsOpen_#res#1 := areDoorsOpen_~retValue_acc~10#1; 636897#L1637 timeShift_#t~ret84#1 := areDoorsOpen_#res#1;assume { :end_inline_areDoorsOpen } true;timeShift_~tmp~24#1 := timeShift_#t~ret84#1;havoc timeShift_#t~ret84#1; 624426#L2587 assume 0 != timeShift_~tmp~24#1; 624427#L2588 assume ~weight~0 > ~maximumWeight~0;~blocked~0 := 1; 625997#L2587-1 assume { :begin_inline___utac_acc__Specification13_spec__2 } true;havoc __utac_acc__Specification13_spec__2_#t~ret5#1, __utac_acc__Specification13_spec__2_#t~ret6#1, __utac_acc__Specification13_spec__2_#t~ret7#1, __utac_acc__Specification13_spec__2_#t~ret8#1, __utac_acc__Specification13_spec__2_#t~ret9#1, __utac_acc__Specification13_spec__2_#t~ret10#1, __utac_acc__Specification13_spec__2_~tmp~0#1, __utac_acc__Specification13_spec__2_~tmp___0~0#1, __utac_acc__Specification13_spec__2_~tmp___1~0#1, __utac_acc__Specification13_spec__2_~tmp___2~0#1, __utac_acc__Specification13_spec__2_~tmp___3~0#1, __utac_acc__Specification13_spec__2_~tmp___4~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1, __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;havoc __utac_acc__Specification13_spec__2_~tmp~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___0~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___1~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___2~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___3~0#1;havoc __utac_acc__Specification13_spec__2_~tmp___4~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1;havoc __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1;__utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 := 2 * ~maximumWeight~0;__utac_acc__Specification13_spec__2_~__cil_tmp8~0#1 := (if __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 < 0 && 0 != __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 % 3 then 1 + __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3 else __utac_acc__Specification13_spec__2_~__cil_tmp7~0#1 / 3); 628708#L869 assume ~weight~0 > __utac_acc__Specification13_spec__2_~__cil_tmp8~0#1; 626530#L870 assume 1 == ~prevDir~0;assume { :begin_inline_existInLiftCallsInDirection } true;existInLiftCallsInDirection_#in~d#1 := 0;havoc existInLiftCallsInDirection_#res#1;havoc existInLiftCallsInDirection_~d#1, existInLiftCallsInDirection_~retValue_acc~22#1, existInLiftCallsInDirection_~i~3#1, existInLiftCallsInDirection_~i___0~0#1;existInLiftCallsInDirection_~d#1 := existInLiftCallsInDirection_#in~d#1;havoc existInLiftCallsInDirection_~retValue_acc~22#1;havoc existInLiftCallsInDirection_~i~3#1;havoc existInLiftCallsInDirection_~i___0~0#1; 626531#L2807 assume !(1 == existInLiftCallsInDirection_~d#1); 628751#L2873 assume 0 == existInLiftCallsInDirection_~d#1;existInLiftCallsInDirection_~i___0~0#1 := 0;existInLiftCallsInDirection_~i___0~0#1 := ~currentFloorID~0 - 1; 628752#L2877-2 [2022-11-21 13:48:46,232 INFO L750 eck$LassoCheckResult]: Loop: 628752#L2877-2 assume !false; 625254#L2878 assume existInLiftCallsInDirection_~i___0~0#1 >= 0; 625255#L2879 existInLiftCallsInDirection_~i___0~0#1 := 1 + ~currentFloorID~0; 623542#L2886-2 assume !false; 623543#L2887 assume !(existInLiftCallsInDirection_~i___0~0#1 < 5); 624506#L2945 existInLiftCallsInDirection_~i___0~0#1 := existInLiftCallsInDirection_~i___0~0#1 - 1; 628752#L2877-2 [2022-11-21 13:48:46,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1197021167, now seen corresponding path program 1 times [2022-11-21 13:48:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:46,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540095737] [2022-11-21 13:48:46,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:46,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:46,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:46,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:48:46,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540095737] [2022-11-21 13:48:46,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540095737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:46,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:46,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:48:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60985455] [2022-11-21 13:48:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:46,326 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 13:48:46,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:46,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2078933803, now seen corresponding path program 6 times [2022-11-21 13:48:46,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:48:46,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158090408] [2022-11-21 13:48:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:46,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:48:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:46,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:48:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:48:46,337 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:48:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:48:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:48:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:48:46,357 INFO L87 Difference]: Start difference. First operand 17920 states and 33548 transitions. cyclomatic complexity: 15662 Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:48,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:48,029 INFO L93 Difference]: Finished difference Result 53541 states and 100287 transitions. [2022-11-21 13:48:48,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53541 states and 100287 transitions. [2022-11-21 13:48:48,214 INFO L131 ngComponentsAnalysis]: Automaton has 99 accepting balls. 12216 [2022-11-21 13:48:48,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53541 states to 53541 states and 100287 transitions. [2022-11-21 13:48:48,362 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53484 [2022-11-21 13:48:48,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53484 [2022-11-21 13:48:48,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53541 states and 100287 transitions. [2022-11-21 13:48:48,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:48:48,414 INFO L218 hiAutomatonCegarLoop]: Abstraction has 53541 states and 100287 transitions. [2022-11-21 13:48:48,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53541 states and 100287 transitions.