./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:00:56,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:00:56,846 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 21:00:56,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:00:56,854 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:00:56,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:00:56,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:00:56,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:00:56,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:00:56,890 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:00:56,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:00:56,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:00:56,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:00:56,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:00:56,893 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:00:56,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:00:56,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:00:56,895 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:00:56,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:00:56,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:00:56,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:00:56,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:00:56,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:00:56,898 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:00:56,898 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:00:56,899 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:00:56,899 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:00:56,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:00:56,900 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:00:56,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:00:56,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:00:56,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:56,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:00:56,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:00:56,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:00:56,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:00:56,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:00:56,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:00:56,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:00:56,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:00:56,905 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:00:56,905 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:00:56,906 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cb164e6307f0ddcae5850d7f4578967441d1456f6ed5a5be472ba090758b873 [2023-11-21 21:00:57,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:57,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:57,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:57,214 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:57,218 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:57,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2023-11-21 21:01:00,309 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:01:00,806 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:01:00,806 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2023-11-21 21:01:00,837 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/data/7f1b9d74c/8894e91b77bd4a70a0dbf98fb553b683/FLAGf0c917e4d [2023-11-21 21:01:00,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/data/7f1b9d74c/8894e91b77bd4a70a0dbf98fb553b683 [2023-11-21 21:01:00,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:01:00,909 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:01:00,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:00,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:01:00,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:01:00,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:00" (1/1) ... [2023-11-21 21:01:00,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd29bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:00, skipping insertion in model container [2023-11-21 21:01:00,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:00" (1/1) ... [2023-11-21 21:01:01,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:01:01,454 WARN L240 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_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2023-11-21 21:01:01,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:01,683 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:01:01,694 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [48] [2023-11-21 21:01:01,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [412] [2023-11-21 21:01:01,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [532] [2023-11-21 21:01:01,697 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [716] [2023-11-21 21:01:01,697 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [1383] [2023-11-21 21:01:01,697 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1418] [2023-11-21 21:01:01,698 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1427] [2023-11-21 21:01:01,698 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2869] [2023-11-21 21:01:01,698 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3235] [2023-11-21 21:01:01,699 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3247] [2023-11-21 21:01:01,736 WARN L240 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_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c[28842,28855] [2023-11-21 21:01:01,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:01,843 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:01:01,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01 WrapperNode [2023-11-21 21:01:01,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:01,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:01,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:01:01,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:01:01,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:01,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:01,954 INFO L138 Inliner]: procedures = 89, calls = 330, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 811 [2023-11-21 21:01:01,954 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:01,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:01:01,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:01:01,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:01:01,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:01,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:01,973 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:01,999 INFO L187 HeapSplitter]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4, 4, 4, 4, 2] [2023-11-21 21:01:02,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:02,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:02,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:02,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:02,067 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:02,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:02,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:01:02,093 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:01:02,093 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:01:02,093 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:01:02,094 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (1/1) ... [2023-11-21 21:01:02,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:02,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:02,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:01:02,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6aaf37b6-6bc2-48a8-b3e7-133fa3ed5dfa/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:01:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:01:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-21 21:01:02,184 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-21 21:01:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 21:01:02,185 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 21:01:02,185 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 21:01:02,185 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 21:01:02,185 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 21:01:02,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 21:01:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 21:01:02,186 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 21:01:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 21:01:02,187 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 21:01:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-21 21:01:02,187 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-21 21:01:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 21:01:02,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 21:01:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 21:01:02,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 21:01:02,189 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 21:01:02,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 21:01:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 21:01:02,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 21:01:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 21:01:02,191 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 21:01:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 21:01:02,191 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 21:01:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 21:01:02,192 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 21:01:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 21:01:02,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 21:01:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 21:01:02,192 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 21:01:02,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:01:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 21:01:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 21:01:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 21:01:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 21:01:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 21:01:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 21:01:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 21:01:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 21:01:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 21:01:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 21:01:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 21:01:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 21:01:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 21:01:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 21:01:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 21:01:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 21:01:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 21:01:02,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 21:01:02,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 21:01:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 21:01:02,197 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 21:01:02,197 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 21:01:02,197 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 21:01:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 21:01:02,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 21:01:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:01:02,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:01:02,198 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 21:01:02,198 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 21:01:02,501 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:01:02,504 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:01:03,679 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:01:04,922 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:01:04,922 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:01:04,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:04 BoogieIcfgContainer [2023-11-21 21:01:04,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:01:04,928 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:01:04,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:01:04,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:01:04,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:01:00" (1/3) ... [2023-11-21 21:01:04,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152899cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:04, skipping insertion in model container [2023-11-21 21:01:04,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:01" (2/3) ... [2023-11-21 21:01:04,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152899cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:04, skipping insertion in model container [2023-11-21 21:01:04,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:04" (3/3) ... [2023-11-21 21:01:04,938 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product09.cil.c [2023-11-21 21:01:04,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:01:04,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:01:05,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:01:05,045 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=LoopHeads, 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;@20dfc66a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:01:05,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:01:05,054 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 233 states have (on average 1.6309012875536482) internal successors, (380), 254 states have internal predecessors, (380), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-21 21:01:05,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-21 21:01:05,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:05,092 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:05,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:05,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:05,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1341616655, now seen corresponding path program 1 times [2023-11-21 21:01:05,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:05,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174777879] [2023-11-21 21:01:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:05,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:05,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:05,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:01:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:01:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:06,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:06,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:01:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:06,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:06,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174777879] [2023-11-21 21:01:06,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174777879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:06,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:06,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:01:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793236271] [2023-11-21 21:01:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:01:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:06,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:01:06,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:01:06,649 INFO L87 Difference]: Start difference. First operand has 341 states, 233 states have (on average 1.6309012875536482) internal successors, (380), 254 states have internal predecessors, (380), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-21 21:01:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:10,056 INFO L93 Difference]: Finished difference Result 466 states and 762 transitions. [2023-11-21 21:01:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:01:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 51 [2023-11-21 21:01:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:10,090 INFO L225 Difference]: With dead ends: 466 [2023-11-21 21:01:10,090 INFO L226 Difference]: Without dead ends: 444 [2023-11-21 21:01:10,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:01:10,099 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 950 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:10,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 477 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-21 21:01:10,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-21 21:01:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 337. [2023-11-21 21:01:10,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 231 states have (on average 1.619047619047619) internal successors, (374), 250 states have internal predecessors, (374), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2023-11-21 21:01:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 541 transitions. [2023-11-21 21:01:10,334 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 541 transitions. Word has length 51 [2023-11-21 21:01:10,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:10,334 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 541 transitions. [2023-11-21 21:01:10,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-21 21:01:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 541 transitions. [2023-11-21 21:01:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 21:01:10,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:10,344 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:10,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:01:10,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:10,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1432686737, now seen corresponding path program 1 times [2023-11-21 21:01:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929921615] [2023-11-21 21:01:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:10,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:01:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:01:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:11,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:01:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:11,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:11,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:11,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929921615] [2023-11-21 21:01:11,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929921615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:11,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:11,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:01:11,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944466869] [2023-11-21 21:01:11,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:11,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:01:11,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:11,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:01:11,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:01:11,583 INFO L87 Difference]: Start difference. First operand 337 states and 541 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 21:01:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:19,798 INFO L93 Difference]: Finished difference Result 1107 states and 1818 transitions. [2023-11-21 21:01:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 21:01:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 52 [2023-11-21 21:01:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:19,808 INFO L225 Difference]: With dead ends: 1107 [2023-11-21 21:01:19,808 INFO L226 Difference]: Without dead ends: 786 [2023-11-21 21:01:19,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-11-21 21:01:19,815 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 2211 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 993 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:19,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 1688 Invalid, 3094 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [993 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-21 21:01:19,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-11-21 21:01:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 668. [2023-11-21 21:01:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 468 states have (on average 1.6303418803418803) internal successors, (763), 499 states have internal predecessors, (763), 163 states have call successors, (163), 34 states have call predecessors, (163), 36 states have return successors, (165), 158 states have call predecessors, (165), 158 states have call successors, (165) [2023-11-21 21:01:20,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1091 transitions. [2023-11-21 21:01:20,110 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1091 transitions. Word has length 52 [2023-11-21 21:01:20,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:20,110 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 1091 transitions. [2023-11-21 21:01:20,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 21:01:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1091 transitions. [2023-11-21 21:01:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-21 21:01:20,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:20,115 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:20,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:01:20,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:20,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1796435991, now seen corresponding path program 1 times [2023-11-21 21:01:20,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:20,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855309261] [2023-11-21 21:01:20,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:20,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:20,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:20,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:01:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:01:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:21,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:21,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 21:01:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:21,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855309261] [2023-11-21 21:01:21,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855309261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:21,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:21,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 21:01:21,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266127538] [2023-11-21 21:01:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:21,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:01:21,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:21,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:01:21,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:01:21,132 INFO L87 Difference]: Start difference. First operand 668 states and 1091 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 21:01:28,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:28,498 INFO L93 Difference]: Finished difference Result 1256 states and 2058 transitions. [2023-11-21 21:01:28,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 21:01:28,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2023-11-21 21:01:28,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:28,508 INFO L225 Difference]: With dead ends: 1256 [2023-11-21 21:01:28,508 INFO L226 Difference]: Without dead ends: 804 [2023-11-21 21:01:28,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2023-11-21 21:01:28,513 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1980 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 975 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 975 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:28,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 908 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [975 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-21 21:01:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2023-11-21 21:01:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 711. [2023-11-21 21:01:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 499 states have (on average 1.559118236472946) internal successors, (778), 532 states have internal predecessors, (778), 169 states have call successors, (169), 40 states have call predecessors, (169), 42 states have return successors, (176), 162 states have call predecessors, (176), 164 states have call successors, (176) [2023-11-21 21:01:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1123 transitions. [2023-11-21 21:01:28,711 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1123 transitions. Word has length 56 [2023-11-21 21:01:28,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:28,711 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1123 transitions. [2023-11-21 21:01:28,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 21:01:28,712 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1123 transitions. [2023-11-21 21:01:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-21 21:01:28,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:28,715 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:01:28,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:28,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash 543766481, now seen corresponding path program 1 times [2023-11-21 21:01:28,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:28,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319685046] [2023-11-21 21:01:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:28,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:01:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:01:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 21:01:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:29,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319685046] [2023-11-21 21:01:29,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319685046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:29,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:29,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 21:01:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575990428] [2023-11-21 21:01:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:29,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:01:29,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:29,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:01:29,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:01:29,573 INFO L87 Difference]: Start difference. First operand 711 states and 1123 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:01:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:35,761 INFO L93 Difference]: Finished difference Result 1386 states and 2185 transitions. [2023-11-21 21:01:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 21:01:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 60 [2023-11-21 21:01:35,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:35,770 INFO L225 Difference]: With dead ends: 1386 [2023-11-21 21:01:35,771 INFO L226 Difference]: Without dead ends: 891 [2023-11-21 21:01:35,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:01:35,775 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 2063 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:35,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 865 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-21 21:01:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2023-11-21 21:01:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 782. [2023-11-21 21:01:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 550 states have (on average 1.5345454545454544) internal successors, (844), 585 states have internal predecessors, (844), 180 states have call successors, (180), 48 states have call predecessors, (180), 51 states have return successors, (195), 172 states have call predecessors, (195), 175 states have call successors, (195) [2023-11-21 21:01:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1219 transitions. [2023-11-21 21:01:35,973 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1219 transitions. Word has length 60 [2023-11-21 21:01:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:35,974 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1219 transitions. [2023-11-21 21:01:35,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:01:35,975 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1219 transitions. [2023-11-21 21:01:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-21 21:01:35,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:35,978 INFO L195 NwaCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:35,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:01:35,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:35,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:35,979 INFO L85 PathProgramCache]: Analyzing trace with hash -320064404, now seen corresponding path program 1 times [2023-11-21 21:01:35,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:35,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140730563] [2023-11-21 21:01:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:35,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:01:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:01:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-21 21:01:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:01:36,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140730563] [2023-11-21 21:01:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140730563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:36,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:36,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:01:36,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135674571] [2023-11-21 21:01:36,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:36,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:01:36,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:36,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:01:36,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:01:36,998 INFO L87 Difference]: Start difference. First operand 782 states and 1219 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:01:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:01:41,474 INFO L93 Difference]: Finished difference Result 1575 states and 2478 transitions. [2023-11-21 21:01:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 21:01:41,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 63 [2023-11-21 21:01:41,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:01:41,483 INFO L225 Difference]: With dead ends: 1575 [2023-11-21 21:01:41,483 INFO L226 Difference]: Without dead ends: 855 [2023-11-21 21:01:41,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:01:41,489 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1605 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:01:41,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1660 Valid, 1305 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-21 21:01:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-11-21 21:01:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 782. [2023-11-21 21:01:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 550 states have (on average 1.4963636363636363) internal successors, (823), 585 states have internal predecessors, (823), 180 states have call successors, (180), 48 states have call predecessors, (180), 51 states have return successors, (195), 172 states have call predecessors, (195), 175 states have call successors, (195) [2023-11-21 21:01:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1198 transitions. [2023-11-21 21:01:41,685 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1198 transitions. Word has length 63 [2023-11-21 21:01:41,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:01:41,686 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1198 transitions. [2023-11-21 21:01:41,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:01:41,686 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1198 transitions. [2023-11-21 21:01:41,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-21 21:01:41,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:41,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:41,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 21:01:41,690 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:41,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:41,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1965779470, now seen corresponding path program 1 times [2023-11-21 21:01:41,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:41,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958859163] [2023-11-21 21:01:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:41,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:42,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:42,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:42,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:01:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:01:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:42,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:01:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:42,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:01:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 21:01:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:43,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:01:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:43,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:01:43,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:43,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958859163] [2023-11-21 21:01:43,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958859163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:43,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:43,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-21 21:01:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003929135] [2023-11-21 21:01:43,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:43,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 21:01:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:43,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 21:01:43,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-21 21:01:43,119 INFO L87 Difference]: Start difference. First operand 782 states and 1198 transitions. Second operand has 14 states, 12 states have (on average 3.25) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10)