./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-nonlinear/color-magicseries1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-nonlinear/color-magicseries1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd --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 36e10b539b0c5593d108c5ae8d5aca590fa779f1bae4b76f536932feddfdfc87 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:54:24,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:54:24,893 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:54:24,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:54:24,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:54:24,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:54:24,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:54:24,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:54:24,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:54:24,939 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:54:24,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:54:24,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:54:24,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:54:24,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:54:24,941 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:54:24,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:54:24,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:54:24,942 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:54:24,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:54:24,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:54:24,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:54:24,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:54:24,942 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:54:24,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:54:24,943 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:54:24,943 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:54:24,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:54:24,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:54:24,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:54:24,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:54:24,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:54:24,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:54:24,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:54:24,943 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:54:24,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:54:24,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:54:24,944 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:54:24,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:54:24,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:54:24,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:54:24,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:54:24,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:54:24,944 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd 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 -> 36e10b539b0c5593d108c5ae8d5aca590fa779f1bae4b76f536932feddfdfc87 [2024-11-13 15:54:25,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:54:25,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:54:25,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:54:25,270 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:54:25,271 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:54:25,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/floats-nonlinear/color-magicseries1.c Unable to find full path for "g++" [2024-11-13 15:54:27,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:54:27,507 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:54:27,508 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/sv-benchmarks/c/floats-nonlinear/color-magicseries1.c [2024-11-13 15:54:27,522 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/data/6e09b78a7/d6468e2cb3714b59b636c04110dcf578/FLAGb5cac032e [2024-11-13 15:54:27,550 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/data/6e09b78a7/d6468e2cb3714b59b636c04110dcf578 [2024-11-13 15:54:27,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:54:27,556 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:54:27,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:54:27,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:54:27,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:54:27,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555d94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27, skipping insertion in model container [2024-11-13 15:54:27,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:54:27,805 WARN L250 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_3866474f-19ed-4abc-aeea-7d386e974280/sv-benchmarks/c/floats-nonlinear/color-magicseries1.c[613,626] [2024-11-13 15:54:27,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:54:27,861 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:54:27,876 WARN L250 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_3866474f-19ed-4abc-aeea-7d386e974280/sv-benchmarks/c/floats-nonlinear/color-magicseries1.c[613,626] [2024-11-13 15:54:27,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:54:27,910 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:54:27,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27 WrapperNode [2024-11-13 15:54:27,911 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:54:27,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:54:27,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:54:27,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:54:27,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,962 INFO L138 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-11-13 15:54:27,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:54:27,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:54:27,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:54:27,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:54:27,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,985 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 0 writes are split as follows [0, 0]. [2024-11-13 15:54:27,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:27,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:54:28,000 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:54:28,000 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:54:28,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:54:28,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (1/1) ... [2024-11-13 15:54:28,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:54:28,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:28,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:54:28,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:54:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:54:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:54:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:54:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:54:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure check_domain [2024-11-13 15:54:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure check_domain [2024-11-13 15:54:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:54:28,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:54:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:54:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:54:28,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:54:28,161 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:54:28,164 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:54:28,433 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-13 15:54:28,433 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:54:28,445 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:54:28,445 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:54:28,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:54:28 BoogieIcfgContainer [2024-11-13 15:54:28,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:54:28,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:54:28,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:54:28,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:54:28,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:54:27" (1/3) ... [2024-11-13 15:54:28,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711876c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:54:28, skipping insertion in model container [2024-11-13 15:54:28,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:54:27" (2/3) ... [2024-11-13 15:54:28,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711876c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:54:28, skipping insertion in model container [2024-11-13 15:54:28,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:54:28" (3/3) ... [2024-11-13 15:54:28,459 INFO L112 eAbstractionObserver]: Analyzing ICFG color-magicseries1.c [2024-11-13 15:54:28,480 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:54:28,482 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG color-magicseries1.c that has 2 procedures, 37 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 15:54:28,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:54:28,581 INFO L333 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, 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;@40b432e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:54:28,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:54:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:54:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 15:54:28,605 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:28,606 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:28,607 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:28,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash 405536927, now seen corresponding path program 1 times [2024-11-13 15:54:28,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:28,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044994357] [2024-11-13 15:54:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:28,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:29,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:29,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044994357] [2024-11-13 15:54:29,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044994357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:29,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:29,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:54:29,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640448406] [2024-11-13 15:54:29,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:29,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:54:29,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:29,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:54:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:54:29,113 INFO L87 Difference]: Start difference. First operand has 37 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:54:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:29,177 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2024-11-13 15:54:29,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:54:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-13 15:54:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:29,188 INFO L225 Difference]: With dead ends: 71 [2024-11-13 15:54:29,189 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 15:54:29,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:54:29,196 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:29,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 175 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:54:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 15:54:29,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 15:54:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 15:54:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2024-11-13 15:54:29,264 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 17 [2024-11-13 15:54:29,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:29,265 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2024-11-13 15:54:29,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:54:29,265 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2024-11-13 15:54:29,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 15:54:29,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:29,267 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:29,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:54:29,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:29,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:29,268 INFO L85 PathProgramCache]: Analyzing trace with hash 112133920, now seen corresponding path program 1 times [2024-11-13 15:54:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:29,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335141092] [2024-11-13 15:54:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:29,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:29,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:29,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335141092] [2024-11-13 15:54:29,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335141092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:29,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:29,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:54:29,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129600333] [2024-11-13 15:54:29,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:29,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:29,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:29,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:29,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:29,481 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:54:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:29,522 INFO L93 Difference]: Finished difference Result 41 states and 55 transitions. [2024-11-13 15:54:29,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:54:29,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-13 15:54:29,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:29,525 INFO L225 Difference]: With dead ends: 41 [2024-11-13 15:54:29,525 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 15:54:29,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:29,526 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:29,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:54:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 15:54:29,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 15:54:29,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 15:54:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2024-11-13 15:54:29,537 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 17 [2024-11-13 15:54:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:29,537 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2024-11-13 15:54:29,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:54:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2024-11-13 15:54:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:54:29,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:29,541 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:29,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:54:29,541 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:29,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1482776468, now seen corresponding path program 1 times [2024-11-13 15:54:29,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:29,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516961078] [2024-11-13 15:54:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:29,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:54:29,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516961078] [2024-11-13 15:54:29,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516961078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:29,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:29,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:54:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142195244] [2024-11-13 15:54:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:29,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:54:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:54:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:29,647 INFO L87 Difference]: Start difference. First operand 37 states and 50 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:54:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:29,672 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2024-11-13 15:54:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:54:29,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-13 15:54:29,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:29,674 INFO L225 Difference]: With dead ends: 51 [2024-11-13 15:54:29,674 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 15:54:29,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:29,676 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:29,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:54:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 15:54:29,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 15:54:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 15:54:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2024-11-13 15:54:29,683 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 21 [2024-11-13 15:54:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:29,684 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2024-11-13 15:54:29,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:54:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2024-11-13 15:54:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 15:54:29,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:29,685 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 15:54:29,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:54:29,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:29,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:29,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1907046924, now seen corresponding path program 1 times [2024-11-13 15:54:29,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:29,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517266825] [2024-11-13 15:54:29,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:29,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 15:54:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:54:29,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:29,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517266825] [2024-11-13 15:54:29,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517266825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:29,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:29,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:54:29,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433306097] [2024-11-13 15:54:29,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:29,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:29,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:29,827 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:54:29,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:29,865 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2024-11-13 15:54:29,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:54:29,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-13 15:54:29,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:29,867 INFO L225 Difference]: With dead ends: 61 [2024-11-13 15:54:29,867 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 15:54:29,867 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:29,868 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:29,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:54:29,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 15:54:29,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 15:54:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 15:54:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2024-11-13 15:54:29,876 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2024-11-13 15:54:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:29,876 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2024-11-13 15:54:29,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:54:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2024-11-13 15:54:29,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 15:54:29,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:29,878 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-13 15:54:29,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:54:29,878 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:29,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:29,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1885039927, now seen corresponding path program 1 times [2024-11-13 15:54:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:29,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699409461] [2024-11-13 15:54:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:29,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:29,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 15:54:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 15:54:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 15:54:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:30,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699409461] [2024-11-13 15:54:30,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699409461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:30,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:30,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:54:30,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008639539] [2024-11-13 15:54:30,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:30,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:30,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:30,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:30,024 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:54:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:30,075 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2024-11-13 15:54:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:54:30,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-13 15:54:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:30,077 INFO L225 Difference]: With dead ends: 65 [2024-11-13 15:54:30,077 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 15:54:30,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:30,080 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:30,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:54:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 15:54:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2024-11-13 15:54:30,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:54:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-11-13 15:54:30,087 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 33 [2024-11-13 15:54:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:30,087 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-11-13 15:54:30,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:54:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-11-13 15:54:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 15:54:30,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:30,089 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:30,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:54:30,089 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:30,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash 803338356, now seen corresponding path program 1 times [2024-11-13 15:54:30,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:30,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24151945] [2024-11-13 15:54:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:30,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:54:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:54:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:54:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 15:54:30,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:30,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24151945] [2024-11-13 15:54:30,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24151945] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:30,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:30,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:54:30,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424870622] [2024-11-13 15:54:30,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:30,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:54:30,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:30,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:54:30,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:30,244 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:30,294 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2024-11-13 15:54:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:54:30,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2024-11-13 15:54:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:30,296 INFO L225 Difference]: With dead ends: 47 [2024-11-13 15:54:30,296 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 15:54:30,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:30,297 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:30,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 66 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:54:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 15:54:30,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2024-11-13 15:54:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:54:30,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-13 15:54:30,312 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 39 [2024-11-13 15:54:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:30,317 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-13 15:54:30,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-13 15:54:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 15:54:30,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:30,319 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:30,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:54:30,319 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:30,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:30,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1589124823, now seen corresponding path program 1 times [2024-11-13 15:54:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:30,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780489290] [2024-11-13 15:54:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:54:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:54:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:54:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 15:54:30,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780489290] [2024-11-13 15:54:30,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780489290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:30,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:30,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:54:30,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131970477] [2024-11-13 15:54:30,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:30,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:54:30,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:54:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:30,500 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:30,538 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2024-11-13 15:54:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:54:30,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-11-13 15:54:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:30,545 INFO L225 Difference]: With dead ends: 50 [2024-11-13 15:54:30,545 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 15:54:30,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:54:30,546 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:30,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 71 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:54:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 15:54:30,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-13 15:54:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:54:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-13 15:54:30,559 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 41 [2024-11-13 15:54:30,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:30,560 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-13 15:54:30,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:30,560 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-13 15:54:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 15:54:30,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:30,564 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:30,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:54:30,564 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:30,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash 636441740, now seen corresponding path program 1 times [2024-11-13 15:54:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363425777] [2024-11-13 15:54:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:30,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:54:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:54:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:54:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 15:54:30,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:30,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363425777] [2024-11-13 15:54:30,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363425777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:30,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107681744] [2024-11-13 15:54:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:30,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:30,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:30,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:30,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:54:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:30,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:54:30,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 15:54:31,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:31,075 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 15:54:31,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107681744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:31,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:54:31,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 15:54:31,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438366648] [2024-11-13 15:54:31,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:31,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:54:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:54:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:54:31,081 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:31,133 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2024-11-13 15:54:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:54:31,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2024-11-13 15:54:31,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:31,135 INFO L225 Difference]: With dead ends: 58 [2024-11-13 15:54:31,135 INFO L226 Difference]: Without dead ends: 44 [2024-11-13 15:54:31,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:54:31,136 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:31,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 75 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:54:31,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-13 15:54:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-13 15:54:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 38 states have internal predecessors, (46), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:54:31,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2024-11-13 15:54:31,143 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 44 [2024-11-13 15:54:31,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:31,144 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2024-11-13 15:54:31,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:31,144 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2024-11-13 15:54:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 15:54:31,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:31,146 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:31,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:54:31,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 15:54:31,350 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:31,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:31,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1965372567, now seen corresponding path program 2 times [2024-11-13 15:54:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:31,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873487815] [2024-11-13 15:54:31,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:31,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:54:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:54:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:54:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-13 15:54:31,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:31,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873487815] [2024-11-13 15:54:31,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873487815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:54:31,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:54:31,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:54:31,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741844631] [2024-11-13 15:54:31,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:54:31,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:54:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:54:31,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:31,467 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:31,490 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2024-11-13 15:54:31,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:54:31,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 53 [2024-11-13 15:54:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:31,492 INFO L225 Difference]: With dead ends: 50 [2024-11-13 15:54:31,492 INFO L226 Difference]: Without dead ends: 44 [2024-11-13 15:54:31,492 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:54:31,493 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:31,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:54:31,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-13 15:54:31,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-13 15:54:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:54:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-11-13 15:54:31,499 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 53 [2024-11-13 15:54:31,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:31,500 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-11-13 15:54:31,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-11-13 15:54:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 15:54:31,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:31,501 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:31,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:54:31,502 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:31,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:31,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1766152489, now seen corresponding path program 1 times [2024-11-13 15:54:31,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:31,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199263785] [2024-11-13 15:54:31,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:31,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:54:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:54:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:54:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-13 15:54:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:31,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199263785] [2024-11-13 15:54:31,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199263785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:31,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295713686] [2024-11-13 15:54:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:31,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:31,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:31,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:31,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:54:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:31,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:54:31,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-13 15:54:31,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-13 15:54:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295713686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:32,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:54:32,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 15:54:32,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104767591] [2024-11-13 15:54:32,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:32,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:54:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:32,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:54:32,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:54:32,054 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:32,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:32,122 INFO L93 Difference]: Finished difference Result 99 states and 125 transitions. [2024-11-13 15:54:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:54:32,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2024-11-13 15:54:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:32,127 INFO L225 Difference]: With dead ends: 99 [2024-11-13 15:54:32,128 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 15:54:32,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:54:32,130 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 18 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:32,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 100 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:54:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 15:54:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-13 15:54:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.255813953488372) internal successors, (108), 86 states have internal predecessors, (108), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:54:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 116 transitions. [2024-11-13 15:54:32,153 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 116 transitions. Word has length 55 [2024-11-13 15:54:32,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:32,154 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 116 transitions. [2024-11-13 15:54:32,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:32,154 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 116 transitions. [2024-11-13 15:54:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:54:32,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:32,156 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:32,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:54:32,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:54:32,363 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:32,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash 316358472, now seen corresponding path program 2 times [2024-11-13 15:54:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053776373] [2024-11-13 15:54:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:32,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:33,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:33,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:54:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:33,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:54:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:33,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:54:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 238 proven. 86 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-13 15:54:33,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053776373] [2024-11-13 15:54:33,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053776373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:33,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105251019] [2024-11-13 15:54:33,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:54:33,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:33,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:33,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:33,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:54:34,197 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:54:34,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:54:34,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 15:54:34,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 242 proven. 92 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-13 15:54:35,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:35,349 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:54:35,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-11-13 15:54:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 242 proven. 82 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-13 15:54:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105251019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:35,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:54:35,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 35 [2024-11-13 15:54:35,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192809251] [2024-11-13 15:54:35,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:35,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:54:35,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:54:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:54:35,681 INFO L87 Difference]: Start difference. First operand 92 states and 116 transitions. Second operand has 35 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 35 states have internal predecessors, (104), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:41,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:41,675 INFO L93 Difference]: Finished difference Result 382 states and 499 transitions. [2024-11-13 15:54:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-13 15:54:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 35 states have internal predecessors, (104), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:54:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:41,679 INFO L225 Difference]: With dead ends: 382 [2024-11-13 15:54:41,679 INFO L226 Difference]: Without dead ends: 294 [2024-11-13 15:54:41,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4873 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1355, Invalid=13897, Unknown=0, NotChecked=0, Total=15252 [2024-11-13 15:54:41,692 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 314 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:41,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 652 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 15:54:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-13 15:54:41,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 248. [2024-11-13 15:54:41,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.3057851239669422) internal successors, (316), 242 states have internal predecessors, (316), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:54:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 324 transitions. [2024-11-13 15:54:41,749 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 324 transitions. Word has length 103 [2024-11-13 15:54:41,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:41,751 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 324 transitions. [2024-11-13 15:54:41,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.9714285714285715) internal successors, (104), 35 states have internal predecessors, (104), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:41,751 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 324 transitions. [2024-11-13 15:54:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:54:41,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:41,758 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:41,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:54:41,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:54:41,958 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:41,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1571384578, now seen corresponding path program 1 times [2024-11-13 15:54:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:41,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109190428] [2024-11-13 15:54:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:43,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:43,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:54:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:43,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:54:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:43,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:54:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 241 proven. 83 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-13 15:54:43,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:43,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109190428] [2024-11-13 15:54:43,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109190428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:43,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103179101] [2024-11-13 15:54:43,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:43,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:43,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:43,140 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:43,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:54:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:43,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 15:54:43,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 220 proven. 176 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-13 15:54:44,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:44,553 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 15:54:44,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 14 [2024-11-13 15:54:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 318 proven. 60 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 15:54:44,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103179101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:44,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:54:44,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 12] total 43 [2024-11-13 15:54:44,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399568985] [2024-11-13 15:54:44,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:44,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 15:54:44,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 15:54:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1639, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 15:54:44,706 INFO L87 Difference]: Start difference. First operand 248 states and 324 transitions. Second operand has 43 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 43 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:54,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:54:54,001 INFO L93 Difference]: Finished difference Result 1034 states and 1341 transitions. [2024-11-13 15:54:54,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2024-11-13 15:54:54,002 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 43 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:54:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:54:54,007 INFO L225 Difference]: With dead ends: 1034 [2024-11-13 15:54:54,007 INFO L226 Difference]: Without dead ends: 869 [2024-11-13 15:54:54,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21983 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=3293, Invalid=53113, Unknown=0, NotChecked=0, Total=56406 [2024-11-13 15:54:54,047 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 527 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:54:54,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 636 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2797 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 15:54:54,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2024-11-13 15:54:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 736. [2024-11-13 15:54:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 730 states have (on average 1.2794520547945205) internal successors, (934), 730 states have internal predecessors, (934), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:54:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 942 transitions. [2024-11-13 15:54:54,135 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 942 transitions. Word has length 103 [2024-11-13 15:54:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:54:54,136 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 942 transitions. [2024-11-13 15:54:54,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 43 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:54:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 942 transitions. [2024-11-13 15:54:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:54:54,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:54:54,141 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:54:54,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 15:54:54,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:54:54,342 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:54:54,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:54:54,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1522944972, now seen corresponding path program 2 times [2024-11-13 15:54:54,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:54:54,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156373290] [2024-11-13 15:54:54,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:54:54,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:54:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:55,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:54:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:55,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:54:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:55,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:54:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:55,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:54:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:54:55,458 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 104 proven. 304 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-13 15:54:55,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:54:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156373290] [2024-11-13 15:54:55,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156373290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:54:55,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400672903] [2024-11-13 15:54:55,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:54:55,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:54:55,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:54:55,462 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:54:55,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:54:55,652 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:54:55,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:54:55,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 15:54:55,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:54:56,191 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 233 proven. 133 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-13 15:54:56,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:54:56,457 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 15:54:56,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 14 [2024-11-13 15:54:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 319 proven. 36 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-13 15:54:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400672903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:56,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:54:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 10] total 35 [2024-11-13 15:54:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957729962] [2024-11-13 15:54:56,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:56,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:54:56,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:54:56,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:54:56,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1074, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:54:56,562 INFO L87 Difference]: Start difference. First operand 736 states and 942 transitions. Second operand has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:55:00,363 INFO L93 Difference]: Finished difference Result 2706 states and 3416 transitions. [2024-11-13 15:55:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-13 15:55:00,364 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:55:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:55:00,375 INFO L225 Difference]: With dead ends: 2706 [2024-11-13 15:55:00,375 INFO L226 Difference]: Without dead ends: 2096 [2024-11-13 15:55:00,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1043, Invalid=10729, Unknown=0, NotChecked=0, Total=11772 [2024-11-13 15:55:00,386 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 164 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:55:00,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 489 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:55:00,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2024-11-13 15:55:00,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 1692. [2024-11-13 15:55:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1686 states have (on average 1.2408066429418743) internal successors, (2092), 1686 states have internal predecessors, (2092), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:55:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 2100 transitions. [2024-11-13 15:55:00,578 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 2100 transitions. Word has length 103 [2024-11-13 15:55:00,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:55:00,579 INFO L471 AbstractCegarLoop]: Abstraction has 1692 states and 2100 transitions. [2024-11-13 15:55:00,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 2100 transitions. [2024-11-13 15:55:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:55:00,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:55:00,585 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:55:00,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:55:00,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:00,786 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:55:00,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -271412728, now seen corresponding path program 3 times [2024-11-13 15:55:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:55:00,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441336188] [2024-11-13 15:55:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:00,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:55:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:01,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:55:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:01,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:55:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:01,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:55:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:01,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:55:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:01,545 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 188 proven. 15 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2024-11-13 15:55:01,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:55:01,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441336188] [2024-11-13 15:55:01,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441336188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:01,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954082007] [2024-11-13 15:55:01,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:55:01,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:01,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:01,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:01,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:55:01,733 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-13 15:55:01,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:55:01,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 15:55:01,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:02,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:02,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-11-13 15:55:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 10 proven. 333 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-13 15:55:02,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:03,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:03,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 17 [2024-11-13 15:55:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 7 proven. 339 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-13 15:55:03,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954082007] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:55:03,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:55:03,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 19] total 42 [2024-11-13 15:55:03,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167294347] [2024-11-13 15:55:03,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:55:03,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 15:55:03,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:55:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 15:55:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:55:03,201 INFO L87 Difference]: Start difference. First operand 1692 states and 2100 transitions. Second operand has 42 states, 42 states have (on average 2.9047619047619047) internal successors, (122), 42 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:09,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:55:09,345 INFO L93 Difference]: Finished difference Result 5868 states and 7476 transitions. [2024-11-13 15:55:09,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2024-11-13 15:55:09,345 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.9047619047619047) internal successors, (122), 42 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:55:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:55:09,362 INFO L225 Difference]: With dead ends: 5868 [2024-11-13 15:55:09,362 INFO L226 Difference]: Without dead ends: 4362 [2024-11-13 15:55:09,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12381 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=5751, Invalid=26111, Unknown=0, NotChecked=0, Total=31862 [2024-11-13 15:55:09,368 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 302 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:55:09,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 520 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:55:09,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2024-11-13 15:55:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 3610. [2024-11-13 15:55:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3610 states, 3604 states have (on average 1.2780244173140956) internal successors, (4606), 3604 states have internal predecessors, (4606), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:55:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3610 states to 3610 states and 4614 transitions. [2024-11-13 15:55:09,772 INFO L78 Accepts]: Start accepts. Automaton has 3610 states and 4614 transitions. Word has length 103 [2024-11-13 15:55:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:55:09,773 INFO L471 AbstractCegarLoop]: Abstraction has 3610 states and 4614 transitions. [2024-11-13 15:55:09,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.9047619047619047) internal successors, (122), 42 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3610 states and 4614 transitions. [2024-11-13 15:55:09,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:55:09,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:55:09,783 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 10, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:55:09,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:55:09,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:55:09,984 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:55:09,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:09,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1144672376, now seen corresponding path program 4 times [2024-11-13 15:55:09,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:55:09,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447825168] [2024-11-13 15:55:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:09,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:55:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:10,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:55:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:10,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:55:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:10,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:55:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:10,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:55:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:10,892 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 4 proven. 389 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-13 15:55:10,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:55:10,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447825168] [2024-11-13 15:55:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447825168] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:10,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331311250] [2024-11-13 15:55:10,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:55:10,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:10,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:10,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:10,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:55:11,076 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:55:11,076 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:55:11,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:55:11,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:11,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 15:55:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 306 proven. 50 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 15:55:11,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:11,772 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 15:55:11,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 9 [2024-11-13 15:55:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 273 proven. 83 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 15:55:11,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331311250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:55:11,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:55:11,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 30 [2024-11-13 15:55:11,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961444170] [2024-11-13 15:55:11,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:55:11,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 15:55:11,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:55:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 15:55:11,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:55:11,806 INFO L87 Difference]: Start difference. First operand 3610 states and 4614 transitions. Second operand has 30 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 30 states have internal predecessors, (112), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:55:15,117 INFO L93 Difference]: Finished difference Result 9952 states and 12756 transitions. [2024-11-13 15:55:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-13 15:55:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 30 states have internal predecessors, (112), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:55:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:55:15,148 INFO L225 Difference]: With dead ends: 9952 [2024-11-13 15:55:15,148 INFO L226 Difference]: Without dead ends: 7647 [2024-11-13 15:55:15,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3197 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=886, Invalid=8620, Unknown=0, NotChecked=0, Total=9506 [2024-11-13 15:55:15,156 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 132 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:55:15,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 612 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:55:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7647 states. [2024-11-13 15:55:15,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7647 to 3665. [2024-11-13 15:55:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3659 states have (on average 1.279037988521454) internal successors, (4680), 3659 states have internal predecessors, (4680), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:55:15,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 4688 transitions. [2024-11-13 15:55:15,893 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 4688 transitions. Word has length 103 [2024-11-13 15:55:15,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:55:15,893 INFO L471 AbstractCegarLoop]: Abstraction has 3665 states and 4688 transitions. [2024-11-13 15:55:15,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7333333333333334) internal successors, (112), 30 states have internal predecessors, (112), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 4688 transitions. [2024-11-13 15:55:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:55:15,905 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:55:15,905 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:55:15,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:55:16,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:55:16,106 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:55:16,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1329013448, now seen corresponding path program 5 times [2024-11-13 15:55:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:55:16,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555138166] [2024-11-13 15:55:16,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:16,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:55:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:17,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:55:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:17,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:55:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:17,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:55:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:17,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:55:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 243 proven. 97 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-13 15:55:17,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:55:17,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555138166] [2024-11-13 15:55:17,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555138166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:17,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006061493] [2024-11-13 15:55:17,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:55:17,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:17,165 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:17,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:55:17,405 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2024-11-13 15:55:17,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:55:17,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 15:55:17,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:18,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:18,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2024-11-13 15:55:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 197 proven. 208 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-13 15:55:18,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:19,120 INFO L349 Elim1Store]: treesize reduction 5, result has 81.5 percent of original size [2024-11-13 15:55:19,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2024-11-13 15:55:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 197 proven. 208 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-13 15:55:19,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006061493] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:55:19,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:55:19,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 37 [2024-11-13 15:55:19,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719276435] [2024-11-13 15:55:19,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:55:19,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 15:55:19,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:55:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 15:55:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 15:55:19,190 INFO L87 Difference]: Start difference. First operand 3665 states and 4688 transitions. Second operand has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:21,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:55:21,980 INFO L93 Difference]: Finished difference Result 9049 states and 11666 transitions. [2024-11-13 15:55:21,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 15:55:21,981 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:55:21,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:55:22,004 INFO L225 Difference]: With dead ends: 9049 [2024-11-13 15:55:22,004 INFO L226 Difference]: Without dead ends: 5565 [2024-11-13 15:55:22,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=487, Invalid=4343, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 15:55:22,012 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 155 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:55:22,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 647 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:55:22,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2024-11-13 15:55:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 4454. [2024-11-13 15:55:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4448 states have (on average 1.283498201438849) internal successors, (5709), 4448 states have internal predecessors, (5709), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:55:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 5717 transitions. [2024-11-13 15:55:22,815 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 5717 transitions. Word has length 103 [2024-11-13 15:55:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:55:22,816 INFO L471 AbstractCegarLoop]: Abstraction has 4454 states and 5717 transitions. [2024-11-13 15:55:22,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4864864864864864) internal successors, (129), 37 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:22,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 5717 transitions. [2024-11-13 15:55:22,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:55:22,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:55:22,827 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:55:22,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 15:55:23,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:55:23,027 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:55:23,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:23,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1988544970, now seen corresponding path program 6 times [2024-11-13 15:55:23,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:55:23,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765430947] [2024-11-13 15:55:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:23,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:55:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:23,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:55:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:23,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:55:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:23,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:55:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:23,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:55:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 231 proven. 160 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-13 15:55:23,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:55:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765430947] [2024-11-13 15:55:23,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765430947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704257383] [2024-11-13 15:55:23,983 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:55:23,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:23,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:23,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:23,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:55:24,220 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-13 15:55:24,220 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:55:24,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 15:55:24,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:24,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:24,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-11-13 15:55:25,036 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 10 proven. 396 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 15:55:25,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:25,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:25,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 15:55:25,585 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 10 proven. 396 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 15:55:25,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704257383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:55:25,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:55:25,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18, 18] total 38 [2024-11-13 15:55:25,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903786562] [2024-11-13 15:55:25,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:55:25,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 15:55:25,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:55:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 15:55:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:55:25,588 INFO L87 Difference]: Start difference. First operand 4454 states and 5717 transitions. Second operand has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:55:29,351 INFO L93 Difference]: Finished difference Result 11475 states and 15421 transitions. [2024-11-13 15:55:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-13 15:55:29,352 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:55:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:55:29,393 INFO L225 Difference]: With dead ends: 11475 [2024-11-13 15:55:29,393 INFO L226 Difference]: Without dead ends: 9274 [2024-11-13 15:55:29,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2544 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1026, Invalid=7346, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 15:55:29,402 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 199 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:55:29,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 553 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:55:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9274 states. [2024-11-13 15:55:30,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9274 to 9054. [2024-11-13 15:55:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9054 states, 9048 states have (on average 1.2979664014146772) internal successors, (11744), 9048 states have internal predecessors, (11744), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:55:30,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9054 states to 9054 states and 11752 transitions. [2024-11-13 15:55:30,784 INFO L78 Accepts]: Start accepts. Automaton has 9054 states and 11752 transitions. Word has length 103 [2024-11-13 15:55:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:55:30,785 INFO L471 AbstractCegarLoop]: Abstraction has 9054 states and 11752 transitions. [2024-11-13 15:55:30,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9054 states and 11752 transitions. [2024-11-13 15:55:30,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:55:30,800 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:55:30,801 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 8, 8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:55:30,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:55:31,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:55:31,005 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:55:31,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:31,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1330036920, now seen corresponding path program 7 times [2024-11-13 15:55:31,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:55:31,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260716754] [2024-11-13 15:55:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:31,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:55:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:31,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:55:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:31,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:55:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:31,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:55:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:31,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:55:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 328 proven. 67 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-13 15:55:31,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:55:31,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260716754] [2024-11-13 15:55:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260716754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428846812] [2024-11-13 15:55:31,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:55:31,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:31,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:31,805 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:31,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:55:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:31,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 15:55:31,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:32,651 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 242 proven. 88 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-13 15:55:32,651 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:32,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:32,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 19 [2024-11-13 15:55:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 244 proven. 86 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-13 15:55:33,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428846812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:55:33,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:55:33,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 35 [2024-11-13 15:55:33,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595726706] [2024-11-13 15:55:33,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:55:33,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:55:33,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:55:33,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:55:33,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:55:33,147 INFO L87 Difference]: Start difference. First operand 9054 states and 11752 transitions. Second operand has 35 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 35 states have internal predecessors, (116), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:55:42,093 INFO L93 Difference]: Finished difference Result 23021 states and 30045 transitions. [2024-11-13 15:55:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2024-11-13 15:55:42,095 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 35 states have internal predecessors, (116), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:55:42,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:55:42,156 INFO L225 Difference]: With dead ends: 23021 [2024-11-13 15:55:42,157 INFO L226 Difference]: Without dead ends: 15895 [2024-11-13 15:55:42,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9798 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3374, Invalid=23686, Unknown=0, NotChecked=0, Total=27060 [2024-11-13 15:55:42,167 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 405 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:55:42,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 797 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 15:55:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15895 states. [2024-11-13 15:55:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15895 to 10473. [2024-11-13 15:55:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10473 states, 10467 states have (on average 1.294640298079679) internal successors, (13551), 10467 states have internal predecessors, (13551), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:55:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10473 states to 10473 states and 13559 transitions. [2024-11-13 15:55:44,052 INFO L78 Accepts]: Start accepts. Automaton has 10473 states and 13559 transitions. Word has length 103 [2024-11-13 15:55:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:55:44,052 INFO L471 AbstractCegarLoop]: Abstraction has 10473 states and 13559 transitions. [2024-11-13 15:55:44,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 35 states have internal predecessors, (116), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:44,053 INFO L276 IsEmpty]: Start isEmpty. Operand 10473 states and 13559 transitions. [2024-11-13 15:55:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:55:44,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:55:44,068 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:55:44,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:55:44,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:55:44,269 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:55:44,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:44,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2040310472, now seen corresponding path program 8 times [2024-11-13 15:55:44,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:55:44,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22243645] [2024-11-13 15:55:44,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:44,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:55:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:44,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:55:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:44,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:55:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:44,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:55:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:44,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:55:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 4 proven. 382 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-13 15:55:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:55:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22243645] [2024-11-13 15:55:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22243645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529328148] [2024-11-13 15:55:44,852 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:55:44,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:44,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:44,855 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:44,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:55:45,103 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:55:45,104 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:55:45,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:55:45,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:45,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:55:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 196 proven. 200 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-13 15:55:45,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:46,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:46,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2024-11-13 15:55:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 197 proven. 199 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-13 15:55:46,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529328148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:55:46,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:55:46,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 35 [2024-11-13 15:55:46,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570005959] [2024-11-13 15:55:46,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:55:46,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:55:46,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:55:46,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:55:46,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1069, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:55:46,338 INFO L87 Difference]: Start difference. First operand 10473 states and 13559 transitions. Second operand has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:49,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:55:49,740 INFO L93 Difference]: Finished difference Result 16087 states and 20950 transitions. [2024-11-13 15:55:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 15:55:49,740 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:55:49,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:55:49,781 INFO L225 Difference]: With dead ends: 16087 [2024-11-13 15:55:49,781 INFO L226 Difference]: Without dead ends: 11841 [2024-11-13 15:55:49,790 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=263, Invalid=2187, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 15:55:49,790 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 53 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:55:49,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 738 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:55:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11841 states. [2024-11-13 15:55:51,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11841 to 9458. [2024-11-13 15:55:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9458 states, 9452 states have (on average 1.2859712230215827) internal successors, (12155), 9452 states have internal predecessors, (12155), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:55:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9458 states to 9458 states and 12163 transitions. [2024-11-13 15:55:51,383 INFO L78 Accepts]: Start accepts. Automaton has 9458 states and 12163 transitions. Word has length 103 [2024-11-13 15:55:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:55:51,383 INFO L471 AbstractCegarLoop]: Abstraction has 9458 states and 12163 transitions. [2024-11-13 15:55:51,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:55:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 9458 states and 12163 transitions. [2024-11-13 15:55:51,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:55:51,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:55:51,396 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 12, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:55:51,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:55:51,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:51,600 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:55:51,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:55:51,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1509501640, now seen corresponding path program 9 times [2024-11-13 15:55:51,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:55:51,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901295739] [2024-11-13 15:55:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:55:51,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:55:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:52,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:55:52,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:52,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:55:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:52,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:55:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:52,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:55:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:55:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 4 proven. 382 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-13 15:55:52,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:55:52,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901295739] [2024-11-13 15:55:52,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901295739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:55:52,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466347649] [2024-11-13 15:55:52,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:55:52,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:55:52,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:55:52,499 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:55:52,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:55:52,682 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-13 15:55:52,683 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:55:52,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:55:52,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:55:53,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:53,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2024-11-13 15:55:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 176 proven. 20 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-13 15:55:53,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:55:53,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:55:53,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2024-11-13 15:55:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 181 proven. 15 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-13 15:55:53,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466347649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:55:53,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:55:53,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 30 [2024-11-13 15:55:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483454359] [2024-11-13 15:55:53,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:55:53,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 15:55:53,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:55:53,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 15:55:53,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:55:53,634 INFO L87 Difference]: Start difference. First operand 9458 states and 12163 transitions. Second operand has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 30 states have internal predecessors, (103), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:56:05,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:56:05,474 INFO L93 Difference]: Finished difference Result 38608 states and 50418 transitions. [2024-11-13 15:56:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-13 15:56:05,476 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 30 states have internal predecessors, (103), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2024-11-13 15:56:05,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:56:05,565 INFO L225 Difference]: With dead ends: 38608 [2024-11-13 15:56:05,566 INFO L226 Difference]: Without dead ends: 32943 [2024-11-13 15:56:05,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14575 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5755, Invalid=27187, Unknown=0, NotChecked=0, Total=32942 [2024-11-13 15:56:05,580 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 393 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:56:05,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 486 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 15:56:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32943 states. [2024-11-13 15:56:09,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32943 to 16598. [2024-11-13 15:56:09,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16598 states, 16592 states have (on average 1.3167791706846672) internal successors, (21848), 16592 states have internal predecessors, (21848), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 15:56:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16598 states to 16598 states and 21856 transitions. [2024-11-13 15:56:09,216 INFO L78 Accepts]: Start accepts. Automaton has 16598 states and 21856 transitions. Word has length 103 [2024-11-13 15:56:09,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:56:09,216 INFO L471 AbstractCegarLoop]: Abstraction has 16598 states and 21856 transitions. [2024-11-13 15:56:09,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 30 states have internal predecessors, (103), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 15:56:09,217 INFO L276 IsEmpty]: Start isEmpty. Operand 16598 states and 21856 transitions. [2024-11-13 15:56:09,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 15:56:09,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:56:09,233 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 13, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:09,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 15:56:09,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:09,438 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:56:09,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1767667078, now seen corresponding path program 10 times [2024-11-13 15:56:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:09,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041327333] [2024-11-13 15:56:09,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:09,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:10,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:56:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:10,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:56:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:10,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 15:56:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:10,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:56:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:10,031 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 221 proven. 168 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-13 15:56:10,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:56:10,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041327333] [2024-11-13 15:56:10,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041327333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:56:10,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204082867] [2024-11-13 15:56:10,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:56:10,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:10,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:56:10,035 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:56:10,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3866474f-19ed-4abc-aeea-7d386e974280/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:56:10,206 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:56:10,206 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:56:10,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:56:10,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:56:10,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:56:10,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2024-11-13 15:56:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 7 proven. 403 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-13 15:56:10,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:56:11,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:56:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 11 proven. 378 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-13 15:56:11,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204082867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:56:11,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:56:11,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 13] total 32 [2024-11-13 15:56:11,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996751965] [2024-11-13 15:56:11,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:56:11,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 15:56:11,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:56:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 15:56:11,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:56:11,314 INFO L87 Difference]: Start difference. First operand 16598 states and 21856 transitions. Second operand has 32 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4)