./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/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_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/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_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/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 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:29:04,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:29:04,974 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:29:04,981 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:29:04,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:29:05,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:29:05,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:29:05,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:29:05,031 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:29:05,031 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:29:05,032 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:29:05,032 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:29:05,033 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:29:05,034 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:29:05,034 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:29:05,035 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:29:05,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:29:05,036 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:29:05,037 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:29:05,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:29:05,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:29:05,042 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:29:05,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:29:05,043 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:29:05,043 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:29:05,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:29:05,044 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:29:05,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:29:05,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:29:05,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:29:05,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:29:05,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:29:05,047 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:29:05,047 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:29:05,048 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:29:05,048 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:29:05,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:29:05,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:29:05,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:29:05,050 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:29:05,050 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:29:05,051 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:29:05,052 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_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f7f32f81229c7756ac3848f16abf37868e5b5283c2f5648c26317015a8240dd [2023-11-21 22:29:05,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:29:05,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:29:05,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:29:05,421 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:29:05,422 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:29:05,423 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2023-11-21 22:29:08,483 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:29:08,948 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:29:08,949 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c [2023-11-21 22:29:08,980 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/data/70274deb5/ceb9c84a68f04b688640c8a8ae69894c/FLAG5cc9baac3 [2023-11-21 22:29:08,996 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/data/70274deb5/ceb9c84a68f04b688640c8a8ae69894c [2023-11-21 22:29:08,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:29:09,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:29:09,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:29:09,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:29:09,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:29:09,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:29:08" (1/1) ... [2023-11-21 22:29:09,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f12c0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:09, skipping insertion in model container [2023-11-21 22:29:09,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:29:08" (1/1) ... [2023-11-21 22:29:09,102 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:29:09,816 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_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2023-11-21 22:29:09,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:29:09,839 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:29:09,850 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [48] [2023-11-21 22:29:09,851 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [1613] [2023-11-21 22:29:09,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1707] [2023-11-21 22:29:09,852 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [1825] [2023-11-21 22:29:09,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [2012] [2023-11-21 22:29:09,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2030] [2023-11-21 22:29:09,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2381] [2023-11-21 22:29:09,854 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3042] [2023-11-21 22:29:09,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [3077] [2023-11-21 22:29:09,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3443] [2023-11-21 22:29:10,042 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_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/sv-benchmarks/c/product-lines/elevator_spec3_product27.cil.c[73003,73016] [2023-11-21 22:29:10,043 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:29:10,079 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:29:10,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10 WrapperNode [2023-11-21 22:29:10,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:29:10,081 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:29:10,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:29:10,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:29:10,089 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,223 INFO L138 Inliner]: procedures = 93, calls = 348, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1134 [2023-11-21 22:29:10,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:29:10,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:29:10,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:29:10,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:29:10,261 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,281 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,371 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 22:29:10,371 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,371 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:29:10,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:29:10,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:29:10,499 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:29:10,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (1/1) ... [2023-11-21 22:29:10,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:29:10,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:29:10,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:29:10,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:29:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:29:10,584 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-11-21 22:29:10,584 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-11-21 22:29:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-21 22:29:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-21 22:29:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 22:29:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 22:29:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-21 22:29:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-21 22:29:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 22:29:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 22:29:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-21 22:29:10,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-21 22:29:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 22:29:10,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 22:29:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 22:29:10,589 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 22:29:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 22:29:10,589 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 22:29:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 22:29:10,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 22:29:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 22:29:10,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 22:29:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 22:29:10,592 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 22:29:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 22:29:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 22:29:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-21 22:29:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-21 22:29:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-11-21 22:29:10,593 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-11-21 22:29:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 22:29:10,594 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 22:29:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-11-21 22:29:10,594 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2023-11-21 22:29:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 22:29:10,594 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 22:29:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-11-21 22:29:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-11-21 22:29:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 22:29:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 22:29:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 22:29:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 22:29:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 22:29:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 22:29:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:29:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:29:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:29:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:29:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:29:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:29:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:29:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:29:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:29:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 22:29:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 22:29:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 22:29:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 22:29:10,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 22:29:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 22:29:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 22:29:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 22:29:10,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 22:29:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 22:29:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 22:29:10,602 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-11-21 22:29:10,602 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-11-21 22:29:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 22:29:10,603 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 22:29:10,603 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 22:29:10,604 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 22:29:10,604 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 22:29:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 22:29:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:29:10,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:29:10,605 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 22:29:10,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 22:29:10,845 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:29:10,860 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:29:12,185 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:29:13,524 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:29:13,525 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:29:13,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:29:13 BoogieIcfgContainer [2023-11-21 22:29:13,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:29:13,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:29:13,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:29:13,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:29:13,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:29:08" (1/3) ... [2023-11-21 22:29:13,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0571a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:29:13, skipping insertion in model container [2023-11-21 22:29:13,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:29:10" (2/3) ... [2023-11-21 22:29:13,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0571a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:29:13, skipping insertion in model container [2023-11-21 22:29:13,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:29:13" (3/3) ... [2023-11-21 22:29:13,541 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product27.cil.c [2023-11-21 22:29:13,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:29:13,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:29:13,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:29:13,664 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;@5c5d9fbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:29:13,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:29:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 273 states have (on average 1.5677655677655677) internal successors, (428), 291 states have internal predecessors, (428), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2023-11-21 22:29:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-21 22:29:13,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:29:13,714 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:29:13,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:29:13,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:29:13,723 INFO L85 PathProgramCache]: Analyzing trace with hash 195497670, now seen corresponding path program 1 times [2023-11-21 22:29:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:29:13,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001568395] [2023-11-21 22:29:13,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:13,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:29:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:29:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:29:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:29:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:29:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:29:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 22:29:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 22:29:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 22:29:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:29:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:29:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-21 22:29:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:15,766 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:29:15,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:29:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001568395] [2023-11-21 22:29:15,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001568395] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:29:15,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381863249] [2023-11-21 22:29:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:15,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:15,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:29:15,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:29:15,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:29:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:16,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:29:16,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:29:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:29:16,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:29:16,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381863249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:29:16,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:29:16,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-21 22:29:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772105883] [2023-11-21 22:29:16,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:29:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:29:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:29:16,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:29:16,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:29:16,374 INFO L87 Difference]: Start difference. First operand has 410 states, 273 states have (on average 1.5677655677655677) internal successors, (428), 291 states have internal predecessors, (428), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-21 22:29:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:29:16,776 INFO L93 Difference]: Finished difference Result 1153 states and 1836 transitions. [2023-11-21 22:29:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:29:16,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 87 [2023-11-21 22:29:16,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:29:16,799 INFO L225 Difference]: With dead ends: 1153 [2023-11-21 22:29:16,800 INFO L226 Difference]: Without dead ends: 745 [2023-11-21 22:29:16,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:29:16,812 INFO L413 NwaCegarLoop]: 1082 mSDtfsCounter, 572 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:29:16,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1593 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:29:16,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2023-11-21 22:29:16,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 733. [2023-11-21 22:29:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 493 states have (on average 1.5598377281947262) internal successors, (769), 524 states have internal predecessors, (769), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 185 states have call predecessors, (193), 188 states have call successors, (193) [2023-11-21 22:29:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1153 transitions. [2023-11-21 22:29:16,946 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1153 transitions. Word has length 87 [2023-11-21 22:29:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:29:16,947 INFO L495 AbstractCegarLoop]: Abstraction has 733 states and 1153 transitions. [2023-11-21 22:29:16,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-21 22:29:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1153 transitions. [2023-11-21 22:29:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-21 22:29:16,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:29:16,959 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:29:16,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:29:17,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:17,176 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:29:17,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:29:17,177 INFO L85 PathProgramCache]: Analyzing trace with hash -934645721, now seen corresponding path program 1 times [2023-11-21 22:29:17,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:29:17,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720016876] [2023-11-21 22:29:17,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:17,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:29:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:29:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:29:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:29:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:29:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:29:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:29:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:29:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 22:29:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:29:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:29:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 22:29:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-21 22:29:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:29:18,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:29:18,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720016876] [2023-11-21 22:29:18,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720016876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:29:18,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:29:18,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:29:18,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404716097] [2023-11-21 22:29:18,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:29:18,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:29:18,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:29:18,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:29:18,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:29:18,396 INFO L87 Difference]: Start difference. First operand 733 states and 1153 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-21 22:29:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:29:28,924 INFO L93 Difference]: Finished difference Result 2594 states and 4204 transitions. [2023-11-21 22:29:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:29:28,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 88 [2023-11-21 22:29:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:29:28,951 INFO L225 Difference]: With dead ends: 2594 [2023-11-21 22:29:28,951 INFO L226 Difference]: Without dead ends: 1873 [2023-11-21 22:29:28,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:29:28,960 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 2957 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 1311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 3891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1311 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:29:28,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3052 Valid, 1679 Invalid, 3891 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1311 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-11-21 22:29:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2023-11-21 22:29:29,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1395. [2023-11-21 22:29:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 960 states have (on average 1.565625) internal successors, (1503), 1019 states have internal predecessors, (1503), 343 states have call successors, (343), 88 states have call predecessors, (343), 91 states have return successors, (388), 323 states have call predecessors, (388), 339 states have call successors, (388) [2023-11-21 22:29:29,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 2234 transitions. [2023-11-21 22:29:29,594 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 2234 transitions. Word has length 88 [2023-11-21 22:29:29,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:29:29,598 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 2234 transitions. [2023-11-21 22:29:29,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-21 22:29:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 2234 transitions. [2023-11-21 22:29:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-21 22:29:29,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:29:29,613 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:29:29,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:29:29,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:29:29,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:29:29,615 INFO L85 PathProgramCache]: Analyzing trace with hash 415890774, now seen corresponding path program 1 times [2023-11-21 22:29:29,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:29:29,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123411708] [2023-11-21 22:29:29,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:29,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:29:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:29:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:29:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:29:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:29:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:29:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-21 22:29:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 22:29:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 22:29:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:29:30,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 22:29:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-21 22:29:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:29:30,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:29:30,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123411708] [2023-11-21 22:29:30,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123411708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:29:30,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648111052] [2023-11-21 22:29:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:30,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:30,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:29:30,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:29:30,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:29:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:31,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 1575 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:29:31,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:29:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:29:31,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:29:31,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648111052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:29:31,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:29:31,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-21 22:29:31,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157293539] [2023-11-21 22:29:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:29:31,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:29:31,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:29:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:29:31,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:29:31,167 INFO L87 Difference]: Start difference. First operand 1395 states and 2234 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-21 22:29:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:29:32,250 INFO L93 Difference]: Finished difference Result 3430 states and 5602 transitions. [2023-11-21 22:29:32,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:29:32,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 88 [2023-11-21 22:29:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:29:32,269 INFO L225 Difference]: With dead ends: 3430 [2023-11-21 22:29:32,269 INFO L226 Difference]: Without dead ends: 2047 [2023-11-21 22:29:32,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:29:32,281 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 565 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:29:32,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 1525 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:29:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2023-11-21 22:29:33,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2002. [2023-11-21 22:29:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1384 states have (on average 1.5650289017341041) internal successors, (2166), 1472 states have internal predecessors, (2166), 486 states have call successors, (486), 124 states have call predecessors, (486), 131 states have return successors, (560), 459 states have call predecessors, (560), 482 states have call successors, (560) [2023-11-21 22:29:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3212 transitions. [2023-11-21 22:29:33,067 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3212 transitions. Word has length 88 [2023-11-21 22:29:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:29:33,068 INFO L495 AbstractCegarLoop]: Abstraction has 2002 states and 3212 transitions. [2023-11-21 22:29:33,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-21 22:29:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3212 transitions. [2023-11-21 22:29:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-21 22:29:33,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:29:33,074 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:29:33,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:29:33,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:33,287 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:29:33,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:29:33,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1398046233, now seen corresponding path program 1 times [2023-11-21 22:29:33,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:29:33,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356102544] [2023-11-21 22:29:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:33,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:29:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:29:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:29:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:29:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:29:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:29:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:29:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 22:29:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:29:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 22:29:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:29:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-21 22:29:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 22:29:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:29:34,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:29:34,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356102544] [2023-11-21 22:29:34,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356102544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:29:34,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034622760] [2023-11-21 22:29:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:34,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:34,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:29:34,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:29:34,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:29:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:34,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 1587 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:29:34,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:29:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 22:29:34,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:29:34,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034622760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:29:34,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:29:34,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-11-21 22:29:34,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077911119] [2023-11-21 22:29:34,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:29:34,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:29:34,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:29:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:29:34,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:29:34,878 INFO L87 Difference]: Start difference. First operand 2002 states and 3212 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-21 22:29:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:29:35,794 INFO L93 Difference]: Finished difference Result 4028 states and 6545 transitions. [2023-11-21 22:29:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:29:35,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 89 [2023-11-21 22:29:35,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:29:35,816 INFO L225 Difference]: With dead ends: 4028 [2023-11-21 22:29:35,816 INFO L226 Difference]: Without dead ends: 2038 [2023-11-21 22:29:35,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:29:35,841 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 20 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:29:35,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1170 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:29:35,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2023-11-21 22:29:36,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 2030. [2023-11-21 22:29:36,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 1408 states have (on average 1.5582386363636365) internal successors, (2194), 1496 states have internal predecessors, (2194), 490 states have call successors, (490), 124 states have call predecessors, (490), 131 states have return successors, (564), 463 states have call predecessors, (564), 486 states have call successors, (564) [2023-11-21 22:29:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3248 transitions. [2023-11-21 22:29:36,653 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3248 transitions. Word has length 89 [2023-11-21 22:29:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:29:36,654 INFO L495 AbstractCegarLoop]: Abstraction has 2030 states and 3248 transitions. [2023-11-21 22:29:36,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-21 22:29:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3248 transitions. [2023-11-21 22:29:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-21 22:29:36,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:29:36,659 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:29:36,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:29:36,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:36,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:29:36,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:29:36,876 INFO L85 PathProgramCache]: Analyzing trace with hash 228735273, now seen corresponding path program 1 times [2023-11-21 22:29:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:29:36,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994867681] [2023-11-21 22:29:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:36,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:29:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:29:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:29:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:37,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:29:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:29:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:29:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:29:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:29:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 22:29:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:29:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:29:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 22:29:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 22:29:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:29:37,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:29:37,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994867681] [2023-11-21 22:29:37,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994867681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:29:37,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224079223] [2023-11-21 22:29:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:37,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:37,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:29:37,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:29:37,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:29:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:38,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:29:38,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:29:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 22:29:38,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:29:38,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224079223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:29:38,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:29:38,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2023-11-21 22:29:38,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225214650] [2023-11-21 22:29:38,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:29:38,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:29:38,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:29:38,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:29:38,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:29:38,371 INFO L87 Difference]: Start difference. First operand 2030 states and 3248 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-21 22:29:40,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:29:40,659 INFO L93 Difference]: Finished difference Result 5375 states and 8721 transitions. [2023-11-21 22:29:40,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:29:40,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2023-11-21 22:29:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:29:40,692 INFO L225 Difference]: With dead ends: 5375 [2023-11-21 22:29:40,692 INFO L226 Difference]: Without dead ends: 3357 [2023-11-21 22:29:40,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:29:40,718 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 518 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:29:40,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 2568 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:29:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3357 states. [2023-11-21 22:29:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3357 to 3324. [2023-11-21 22:29:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 2295 states have (on average 1.5045751633986928) internal successors, (3453), 2444 states have internal predecessors, (3453), 807 states have call successors, (807), 220 states have call predecessors, (807), 221 states have return successors, (931), 749 states have call predecessors, (931), 801 states have call successors, (931) [2023-11-21 22:29:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 5191 transitions. [2023-11-21 22:29:42,015 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 5191 transitions. Word has length 89 [2023-11-21 22:29:42,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:29:42,016 INFO L495 AbstractCegarLoop]: Abstraction has 3324 states and 5191 transitions. [2023-11-21 22:29:42,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-21 22:29:42,016 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 5191 transitions. [2023-11-21 22:29:42,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-21 22:29:42,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:29:42,020 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:29:42,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:29:42,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:42,237 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:29:42,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:29:42,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1065153192, now seen corresponding path program 1 times [2023-11-21 22:29:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:29:42,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238060655] [2023-11-21 22:29:42,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:42,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:29:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:29:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:29:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:29:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:29:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:29:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:29:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:29:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:29:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 22:29:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:29:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:29:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-21 22:29:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-21 22:29:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:29:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:29:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238060655] [2023-11-21 22:29:43,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238060655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:29:43,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045521656] [2023-11-21 22:29:43,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:43,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:43,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:29:43,665 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:29:43,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:29:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:44,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-21 22:29:44,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:29:44,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 22:29:44,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:29:44,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045521656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:29:44,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:29:44,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 18 [2023-11-21 22:29:44,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792169110] [2023-11-21 22:29:44,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:29:44,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:29:44,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:29:44,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:29:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:29:44,382 INFO L87 Difference]: Start difference. First operand 3324 states and 5191 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-21 22:29:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:29:47,297 INFO L93 Difference]: Finished difference Result 6997 states and 10917 transitions. [2023-11-21 22:29:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:29:47,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 94 [2023-11-21 22:29:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:29:47,331 INFO L225 Difference]: With dead ends: 6997 [2023-11-21 22:29:47,331 INFO L226 Difference]: Without dead ends: 3685 [2023-11-21 22:29:47,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:29:47,357 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1333 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:29:47,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 1951 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-21 22:29:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2023-11-21 22:29:48,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3664. [2023-11-21 22:29:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3664 states, 2551 states have (on average 1.4860838886711094) internal successors, (3791), 2708 states have internal predecessors, (3791), 867 states have call successors, (867), 248 states have call predecessors, (867), 245 states have return successors, (993), 797 states have call predecessors, (993), 861 states have call successors, (993) [2023-11-21 22:29:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 5651 transitions. [2023-11-21 22:29:48,604 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 5651 transitions. Word has length 94 [2023-11-21 22:29:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:29:48,604 INFO L495 AbstractCegarLoop]: Abstraction has 3664 states and 5651 transitions. [2023-11-21 22:29:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-21 22:29:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 5651 transitions. [2023-11-21 22:29:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-21 22:29:48,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:29:48,608 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:29:48,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:29:48,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:48,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:29:48,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:29:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash -796300198, now seen corresponding path program 1 times [2023-11-21 22:29:48,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:29:48,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754735158] [2023-11-21 22:29:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:29:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:29:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:29:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:49,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:49,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:29:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:49,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:29:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:49,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:29:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:49,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:29:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:29:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:29:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 22:29:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-21 22:29:50,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:29:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:29:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-21 22:29:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-21 22:29:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:29:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:29:50,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:29:50,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754735158] [2023-11-21 22:29:50,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754735158] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:29:50,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443822139] [2023-11-21 22:29:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:29:50,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:29:50,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:29:50,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:29:50,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd9c6fdb-4ed3-498e-a7c9-3ecfdc8c6d9f/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process