./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11bb1f05736dca729c358ce9b340534ff3d0ef3cd2b5d7b8f4dea43dade9112f --- 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-dbf71c6-m [2022-10-17 10:47:18,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:47:18,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:47:18,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:47:18,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:47:18,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:47:18,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:47:18,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:47:18,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:47:18,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:47:18,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:47:19,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:47:19,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:47:19,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:47:19,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:47:19,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:47:19,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:47:19,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:47:19,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:47:19,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:47:19,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:47:19,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:47:19,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:47:19,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:47:19,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:47:19,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:47:19,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:47:19,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:47:19,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:47:19,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:47:19,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:47:19,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:47:19,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:47:19,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:47:19,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:47:19,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:47:19,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:47:19,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:47:19,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:47:19,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:47:19,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:47:19,059 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:47:19,088 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:47:19,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:47:19,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:47:19,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:47:19,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:47:19,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:47:19,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:47:19,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:47:19,092 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:47:19,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:47:19,092 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:47:19,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:47:19,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:47:19,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:47:19,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:47:19,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:47:19,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:47:19,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:47:19,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:47:19,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:47:19,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:47:19,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:47:19,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:47:19,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:47:19,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:47:19,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:47:19,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:47:19,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:47:19,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:47:19,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:47:19,098 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:47:19,098 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:47:19,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:47:19,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11bb1f05736dca729c358ce9b340534ff3d0ef3cd2b5d7b8f4dea43dade9112f [2022-10-17 10:47:19,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:47:19,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:47:19,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:47:19,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:47:19,471 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:47:19,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c [2022-10-17 10:47:19,569 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/data/04f09c9bf/40cd91c2ac4c44198eab13b176d44c85/FLAG96e066831 [2022-10-17 10:47:20,364 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:47:20,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c [2022-10-17 10:47:20,398 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/data/04f09c9bf/40cd91c2ac4c44198eab13b176d44c85/FLAG96e066831 [2022-10-17 10:47:20,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/data/04f09c9bf/40cd91c2ac4c44198eab13b176d44c85 [2022-10-17 10:47:20,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:47:20,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:47:20,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:47:20,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:47:20,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:47:20,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:47:20" (1/1) ... [2022-10-17 10:47:20,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e30360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:20, skipping insertion in model container [2022-10-17 10:47:20,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:47:20" (1/1) ... [2022-10-17 10:47:20,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:47:20,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:47:21,380 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c[66437,66450] [2022-10-17 10:47:21,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:47:21,422 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:47:21,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/sv-benchmarks/c/product-lines/elevator_spec9_product27.cil.c[66437,66450] [2022-10-17 10:47:21,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:47:21,597 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:47:21,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21 WrapperNode [2022-10-17 10:47:21,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:47:21,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:47:21,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:47:21,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:47:21,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,710 INFO L138 Inliner]: procedures = 95, calls = 339, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1122 [2022-10-17 10:47:21,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:47:21,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:47:21,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:47:21,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:47:21,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:47:21,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:47:21,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:47:21,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:47:21,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:21,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:47:21,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:21,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:47:21,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94ea1175-26c1-4a34-a2f1-d60cd813947f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:47:21,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:47:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-10-17 10:47:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-10-17 10:47:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-10-17 10:47:21,972 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-10-17 10:47:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-10-17 10:47:21,973 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-10-17 10:47:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-10-17 10:47:21,974 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-10-17 10:47:21,974 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-10-17 10:47:21,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-10-17 10:47:21,975 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-10-17 10:47:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-10-17 10:47:21,975 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 10:47:21,975 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 10:47:21,975 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-10-17 10:47:21,976 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-10-17 10:47:21,976 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-10-17 10:47:21,976 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-10-17 10:47:21,976 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-10-17 10:47:21,976 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-10-17 10:47:21,977 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-10-17 10:47:21,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-10-17 10:47:21,977 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-10-17 10:47:21,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-10-17 10:47:21,977 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-10-17 10:47:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-10-17 10:47:21,978 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-10-17 10:47:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-10-17 10:47:21,978 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-10-17 10:47:21,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-10-17 10:47:21,979 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-10-17 10:47:21,979 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-10-17 10:47:21,979 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-10-17 10:47:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-10-17 10:47:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-10-17 10:47:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-10-17 10:47:21,980 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-10-17 10:47:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-10-17 10:47:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-10-17 10:47:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-10-17 10:47:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:47:21,981 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-10-17 10:47:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-10-17 10:47:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-10-17 10:47:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-10-17 10:47:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-10-17 10:47:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-10-17 10:47:21,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:47:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:47:21,983 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-10-17 10:47:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-10-17 10:47:22,274 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:47:22,289 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:47:23,776 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:47:23,803 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:47:23,803 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:47:23,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:47:23 BoogieIcfgContainer [2022-10-17 10:47:23,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:47:23,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:47:23,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:47:23,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:47:23,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:47:20" (1/3) ... [2022-10-17 10:47:23,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d9fff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:47:23, skipping insertion in model container [2022-10-17 10:47:23,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (2/3) ... [2022-10-17 10:47:23,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d9fff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:47:23, skipping insertion in model container [2022-10-17 10:47:23,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:47:23" (3/3) ... [2022-10-17 10:47:23,822 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product27.cil.c [2022-10-17 10:47:23,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:47:23,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:47:23,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:47:23,957 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@52272027, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:47:23,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:47:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 441 states have (on average 1.6938775510204083) internal successors, (747), 462 states have internal predecessors, (747), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) [2022-10-17 10:47:24,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-17 10:47:24,013 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:24,014 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:24,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:47:24,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:24,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1552478491, now seen corresponding path program 1 times [2022-10-17 10:47:24,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:24,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767016058] [2022-10-17 10:47:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:24,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:47:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:47:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-17 10:47:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:47:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:47:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-17 10:47:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:47:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:47:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:47:25,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:25,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767016058] [2022-10-17 10:47:25,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767016058] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:25,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:25,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:47:25,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339380745] [2022-10-17 10:47:25,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:25,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:47:25,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:25,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:47:25,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:47:25,747 INFO L87 Difference]: Start difference. First operand has 560 states, 441 states have (on average 1.6938775510204083) internal successors, (747), 462 states have internal predecessors, (747), 93 states have call successors, (93), 24 states have call predecessors, (93), 24 states have return successors, (93), 87 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:47:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:33,295 INFO L93 Difference]: Finished difference Result 1341 states and 2269 transitions. [2022-10-17 10:47:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:47:33,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2022-10-17 10:47:33,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:33,327 INFO L225 Difference]: With dead ends: 1341 [2022-10-17 10:47:33,327 INFO L226 Difference]: Without dead ends: 793 [2022-10-17 10:47:33,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:47:33,340 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 960 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:33,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 2289 Invalid, 2826 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [258 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-10-17 10:47:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-10-17 10:47:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 552. [2022-10-17 10:47:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.6896551724137931) internal successors, (735), 454 states have internal predecessors, (735), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-10-17 10:47:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 916 transitions. [2022-10-17 10:47:33,616 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 916 transitions. Word has length 104 [2022-10-17 10:47:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:33,617 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 916 transitions. [2022-10-17 10:47:33,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:47:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 916 transitions. [2022-10-17 10:47:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-10-17 10:47:33,626 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:33,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:33,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:47:33,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:47:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:33,627 INFO L85 PathProgramCache]: Analyzing trace with hash -203426835, now seen corresponding path program 1 times [2022-10-17 10:47:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:33,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173388735] [2022-10-17 10:47:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:33,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:47:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:47:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-17 10:47:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:47:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:47:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-17 10:47:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:47:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:47:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:47:34,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:34,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173388735] [2022-10-17 10:47:34,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173388735] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:34,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:34,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:47:34,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749810476] [2022-10-17 10:47:34,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:34,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:47:34,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:34,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:47:34,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:47:34,289 INFO L87 Difference]: Start difference. First operand 552 states and 916 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:47:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:40,353 INFO L93 Difference]: Finished difference Result 1327 states and 2231 transitions. [2022-10-17 10:47:40,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:47:40,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2022-10-17 10:47:40,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:40,364 INFO L225 Difference]: With dead ends: 1327 [2022-10-17 10:47:40,364 INFO L226 Difference]: Without dead ends: 793 [2022-10-17 10:47:40,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:47:40,370 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 1848 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1921 SdHoareTripleChecker+Valid, 2139 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:40,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1921 Valid, 2139 Invalid, 2859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [548 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-10-17 10:47:40,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-10-17 10:47:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 552. [2022-10-17 10:47:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.6873563218390804) internal successors, (734), 454 states have internal predecessors, (734), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-10-17 10:47:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 915 transitions. [2022-10-17 10:47:40,567 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 915 transitions. Word has length 107 [2022-10-17 10:47:40,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:40,570 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 915 transitions. [2022-10-17 10:47:40,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:47:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 915 transitions. [2022-10-17 10:47:40,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-10-17 10:47:40,579 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:40,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:40,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:47:40,580 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:47:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash 717422571, now seen corresponding path program 1 times [2022-10-17 10:47:40,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:40,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114902623] [2022-10-17 10:47:40,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:40,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:47:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:47:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 10:47:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:47:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:47:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-17 10:47:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:47:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:47:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:47:41,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:41,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114902623] [2022-10-17 10:47:41,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114902623] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:41,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:41,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:47:41,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277571324] [2022-10-17 10:47:41,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:41,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:47:41,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:41,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:47:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:47:41,254 INFO L87 Difference]: Start difference. First operand 552 states and 915 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:47:46,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:46,605 INFO L93 Difference]: Finished difference Result 1327 states and 2230 transitions. [2022-10-17 10:47:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:47:46,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 108 [2022-10-17 10:47:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:46,616 INFO L225 Difference]: With dead ends: 1327 [2022-10-17 10:47:46,624 INFO L226 Difference]: Without dead ends: 793 [2022-10-17 10:47:46,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:47:46,641 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 1843 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:46,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 2142 Invalid, 2856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [549 Valid, 2307 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-10-17 10:47:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-10-17 10:47:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 552. [2022-10-17 10:47:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 435 states have (on average 1.6850574712643678) internal successors, (733), 454 states have internal predecessors, (733), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-10-17 10:47:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 914 transitions. [2022-10-17 10:47:46,840 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 914 transitions. Word has length 108 [2022-10-17 10:47:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:46,840 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 914 transitions. [2022-10-17 10:47:46,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-17 10:47:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 914 transitions. [2022-10-17 10:47:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-10-17 10:47:46,852 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:46,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:46,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:47:46,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:47:46,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:46,854 INFO L85 PathProgramCache]: Analyzing trace with hash 256000553, now seen corresponding path program 1 times [2022-10-17 10:47:46,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:46,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746684770] [2022-10-17 10:47:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:46,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:47:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-17 10:47:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-10-17 10:47:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-17 10:47:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:47:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-17 10:47:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 10:47:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 10:47:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:47:47,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:47,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746684770] [2022-10-17 10:47:47,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746684770] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:47,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:47,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:47:47,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885113891] [2022-10-17 10:47:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:47,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:47:47,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:47,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:47:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:47:47,433 INFO L87 Difference]: Start difference. First operand 552 states and 914 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)