./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_8.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI --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 b7157ba450d9d62b74d19027a6860eb7210e35a76921ceb23a9c0a69add85337 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:46:10,501 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:46:10,633 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:46:10,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:46:10,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:46:10,691 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:46:10,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:46:10,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:46:10,693 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:46:10,698 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:46:10,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:46:10,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:46:10,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:46:10,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:46:10,703 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:46:10,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:46:10,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:46:10,704 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:46:10,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:46:10,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:46:10,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:46:10,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:46:10,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:46:10,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:46:10,707 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:46:10,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:46:10,708 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:46:10,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:46:10,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:46:10,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:46:10,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:46:10,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:46:10,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:46:10,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:46:10,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:46:10,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:46:10,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:46:10,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:46:10,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:46:10,713 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:46:10,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:46:10,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:46:10,714 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7157ba450d9d62b74d19027a6860eb7210e35a76921ceb23a9c0a69add85337 [2023-11-24 21:46:11,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:46:11,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:46:11,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:46:11,053 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:46:11,053 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:46:11,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/locks/test_locks_8.c [2023-11-24 21:46:14,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:46:14,581 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:46:14,582 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/sv-benchmarks/c/locks/test_locks_8.c [2023-11-24 21:46:14,593 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/data/59cb55ef0/aeb96c0646a046d8a2768ab781bfe0e2/FLAG7b001fda4 [2023-11-24 21:46:14,610 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/data/59cb55ef0/aeb96c0646a046d8a2768ab781bfe0e2 [2023-11-24 21:46:14,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:46:14,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:46:14,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:46:14,624 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:46:14,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:46:14,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d639ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14, skipping insertion in model container [2023-11-24 21:46:14,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,661 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:46:14,861 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2023-11-24 21:46:14,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:46:14,877 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:46:14,901 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2023-11-24 21:46:14,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:46:14,917 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:46:14,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14 WrapperNode [2023-11-24 21:46:14,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:46:14,919 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:46:14,919 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:46:14,919 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:46:14,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,956 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 124 [2023-11-24 21:46:14,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:46:14,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:46:14,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:46:14,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:46:14,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,971 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,983 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-24 21:46:14,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,994 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,996 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:14,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:46:14,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:46:14,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:46:15,000 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:46:15,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (1/1) ... [2023-11-24 21:46:15,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:46:15,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:46:15,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:46:15,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:46:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:46:15,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:46:15,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:46:15,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:46:15,145 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:46:15,147 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:46:15,361 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:46:15,392 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:46:15,392 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 21:46:15,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:15 BoogieIcfgContainer [2023-11-24 21:46:15,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:46:15,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:46:15,396 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:46:15,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:46:15,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:46:14" (1/3) ... [2023-11-24 21:46:15,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1940eb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:46:15, skipping insertion in model container [2023-11-24 21:46:15,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:14" (2/3) ... [2023-11-24 21:46:15,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1940eb86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:46:15, skipping insertion in model container [2023-11-24 21:46:15,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:15" (3/3) ... [2023-11-24 21:46:15,402 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2023-11-24 21:46:15,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:46:15,422 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-24 21:46:15,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:46:15,473 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@a1e4ca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:46:15,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-24 21:46:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 31 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:46:15,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:15,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:15,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:15,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:15,490 INFO L85 PathProgramCache]: Analyzing trace with hash 144475037, now seen corresponding path program 1 times [2023-11-24 21:46:15,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:15,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017494017] [2023-11-24 21:46:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:15,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:15,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:15,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017494017] [2023-11-24 21:46:15,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017494017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:15,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:15,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:15,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149443323] [2023-11-24 21:46:15,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:15,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:15,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:15,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:15,781 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 31 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:15,861 INFO L93 Difference]: Finished difference Result 66 states and 117 transitions. [2023-11-24 21:46:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:15,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-24 21:46:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:15,875 INFO L225 Difference]: With dead ends: 66 [2023-11-24 21:46:15,875 INFO L226 Difference]: Without dead ends: 56 [2023-11-24 21:46:15,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:15,883 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 40 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:15,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 106 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-24 21:46:15,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 38. [2023-11-24 21:46:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 69 transitions. [2023-11-24 21:46:15,930 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 69 transitions. Word has length 14 [2023-11-24 21:46:15,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:15,930 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 69 transitions. [2023-11-24 21:46:15,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 69 transitions. [2023-11-24 21:46:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 21:46:15,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:15,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:15,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:46:15,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:15,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash 845539615, now seen corresponding path program 1 times [2023-11-24 21:46:15,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:15,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410429716] [2023-11-24 21:46:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:15,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410429716] [2023-11-24 21:46:16,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410429716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516369005] [2023-11-24 21:46:16,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,045 INFO L87 Difference]: Start difference. First operand 38 states and 69 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,067 INFO L93 Difference]: Finished difference Result 93 states and 168 transitions. [2023-11-24 21:46:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-24 21:46:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,069 INFO L225 Difference]: With dead ends: 93 [2023-11-24 21:46:16,069 INFO L226 Difference]: Without dead ends: 56 [2023-11-24 21:46:16,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,072 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:16,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 112 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-24 21:46:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-11-24 21:46:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.830188679245283) internal successors, (97), 53 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2023-11-24 21:46:16,082 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 14 [2023-11-24 21:46:16,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:16,082 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2023-11-24 21:46:16,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,083 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2023-11-24 21:46:16,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 21:46:16,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:16,084 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:16,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:46:16,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:16,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:16,085 INFO L85 PathProgramCache]: Analyzing trace with hash 183972847, now seen corresponding path program 1 times [2023-11-24 21:46:16,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:16,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40354812] [2023-11-24 21:46:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:16,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40354812] [2023-11-24 21:46:16,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40354812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199500232] [2023-11-24 21:46:16,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,144 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,165 INFO L93 Difference]: Finished difference Result 86 states and 149 transitions. [2023-11-24 21:46:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-24 21:46:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,166 INFO L225 Difference]: With dead ends: 86 [2023-11-24 21:46:16,167 INFO L226 Difference]: Without dead ends: 59 [2023-11-24 21:46:16,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,169 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 40 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 125 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 [2023-11-24 21:46:16,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 125 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-24 21:46:16,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2023-11-24 21:46:16,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.7678571428571428) internal successors, (99), 56 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 99 transitions. [2023-11-24 21:46:16,179 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 99 transitions. Word has length 15 [2023-11-24 21:46:16,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:16,179 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 99 transitions. [2023-11-24 21:46:16,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,180 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 99 transitions. [2023-11-24 21:46:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 21:46:16,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:16,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:16,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:46:16,188 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:16,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:16,192 INFO L85 PathProgramCache]: Analyzing trace with hash 442138285, now seen corresponding path program 1 times [2023-11-24 21:46:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:16,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993148395] [2023-11-24 21:46:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993148395] [2023-11-24 21:46:16,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993148395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994108246] [2023-11-24 21:46:16,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,300 INFO L87 Difference]: Start difference. First operand 57 states and 99 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,348 INFO L93 Difference]: Finished difference Result 108 states and 188 transitions. [2023-11-24 21:46:16,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-24 21:46:16,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,351 INFO L225 Difference]: With dead ends: 108 [2023-11-24 21:46:16,351 INFO L226 Difference]: Without dead ends: 106 [2023-11-24 21:46:16,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,353 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 35 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:16,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 98 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-24 21:46:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2023-11-24 21:46:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.76) internal successors, (132), 75 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 132 transitions. [2023-11-24 21:46:16,365 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 132 transitions. Word has length 15 [2023-11-24 21:46:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:16,365 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 132 transitions. [2023-11-24 21:46:16,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,366 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 132 transitions. [2023-11-24 21:46:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 21:46:16,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:16,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:16,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:46:16,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:16,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1143202863, now seen corresponding path program 1 times [2023-11-24 21:46:16,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:16,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121913631] [2023-11-24 21:46:16,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:16,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121913631] [2023-11-24 21:46:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121913631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557731213] [2023-11-24 21:46:16,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,426 INFO L87 Difference]: Start difference. First operand 76 states and 132 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,465 INFO L93 Difference]: Finished difference Result 180 states and 314 transitions. [2023-11-24 21:46:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-24 21:46:16,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,471 INFO L225 Difference]: With dead ends: 180 [2023-11-24 21:46:16,471 INFO L226 Difference]: Without dead ends: 108 [2023-11-24 21:46:16,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,474 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 37 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:16,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 113 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-24 21:46:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2023-11-24 21:46:16,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.7333333333333334) internal successors, (182), 105 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 182 transitions. [2023-11-24 21:46:16,488 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 182 transitions. Word has length 15 [2023-11-24 21:46:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:16,488 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 182 transitions. [2023-11-24 21:46:16,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 182 transitions. [2023-11-24 21:46:16,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:46:16,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:16,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:16,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:46:16,490 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:16,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:16,491 INFO L85 PathProgramCache]: Analyzing trace with hash 821599284, now seen corresponding path program 1 times [2023-11-24 21:46:16,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:16,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688428259] [2023-11-24 21:46:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:16,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688428259] [2023-11-24 21:46:16,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688428259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927273501] [2023-11-24 21:46:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,531 INFO L87 Difference]: Start difference. First operand 106 states and 182 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,547 INFO L93 Difference]: Finished difference Result 161 states and 273 transitions. [2023-11-24 21:46:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-24 21:46:16,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,549 INFO L225 Difference]: With dead ends: 161 [2023-11-24 21:46:16,549 INFO L226 Difference]: Without dead ends: 110 [2023-11-24 21:46:16,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,551 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 39 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 121 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 [2023-11-24 21:46:16,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 121 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-24 21:46:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-11-24 21:46:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.7009345794392523) internal successors, (182), 107 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 182 transitions. [2023-11-24 21:46:16,563 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 182 transitions. Word has length 16 [2023-11-24 21:46:16,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:16,563 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 182 transitions. [2023-11-24 21:46:16,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 182 transitions. [2023-11-24 21:46:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:46:16,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:16,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:16,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:46:16,565 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:16,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1079764722, now seen corresponding path program 1 times [2023-11-24 21:46:16,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:16,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130717404] [2023-11-24 21:46:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:16,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130717404] [2023-11-24 21:46:16,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130717404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791896340] [2023-11-24 21:46:16,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,601 INFO L87 Difference]: Start difference. First operand 108 states and 182 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,619 INFO L93 Difference]: Finished difference Result 308 states and 520 transitions. [2023-11-24 21:46:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-24 21:46:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,621 INFO L225 Difference]: With dead ends: 308 [2023-11-24 21:46:16,622 INFO L226 Difference]: Without dead ends: 206 [2023-11-24 21:46:16,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,624 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 37 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:16,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 100 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-24 21:46:16,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2023-11-24 21:46:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.6650246305418719) internal successors, (338), 203 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 338 transitions. [2023-11-24 21:46:16,642 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 338 transitions. Word has length 16 [2023-11-24 21:46:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:16,643 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 338 transitions. [2023-11-24 21:46:16,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 338 transitions. [2023-11-24 21:46:16,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:46:16,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:16,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:16,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:46:16,645 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:16,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:16,646 INFO L85 PathProgramCache]: Analyzing trace with hash 378700144, now seen corresponding path program 1 times [2023-11-24 21:46:16,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:16,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680120485] [2023-11-24 21:46:16,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:16,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680120485] [2023-11-24 21:46:16,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680120485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686004521] [2023-11-24 21:46:16,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,681 INFO L87 Difference]: Start difference. First operand 204 states and 338 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,698 INFO L93 Difference]: Finished difference Result 256 states and 428 transitions. [2023-11-24 21:46:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-24 21:46:16,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,701 INFO L225 Difference]: With dead ends: 256 [2023-11-24 21:46:16,701 INFO L226 Difference]: Without dead ends: 254 [2023-11-24 21:46:16,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,703 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 32 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 131 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 [2023-11-24 21:46:16,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-24 21:46:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 204. [2023-11-24 21:46:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.645320197044335) internal successors, (334), 203 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 334 transitions. [2023-11-24 21:46:16,723 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 334 transitions. Word has length 16 [2023-11-24 21:46:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:16,723 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 334 transitions. [2023-11-24 21:46:16,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,723 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 334 transitions. [2023-11-24 21:46:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 21:46:16,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:16,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:46:16,726 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:16,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -886817308, now seen corresponding path program 1 times [2023-11-24 21:46:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:16,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404370880] [2023-11-24 21:46:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:16,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404370880] [2023-11-24 21:46:16,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404370880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143254489] [2023-11-24 21:46:16,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,760 INFO L87 Difference]: Start difference. First operand 204 states and 334 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,780 INFO L93 Difference]: Finished difference Result 372 states and 616 transitions. [2023-11-24 21:46:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-24 21:46:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,783 INFO L225 Difference]: With dead ends: 372 [2023-11-24 21:46:16,783 INFO L226 Difference]: Without dead ends: 370 [2023-11-24 21:46:16,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,785 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 29 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:16,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 94 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-24 21:46:16,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 288. [2023-11-24 21:46:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.6097560975609757) internal successors, (462), 287 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 462 transitions. [2023-11-24 21:46:16,806 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 462 transitions. Word has length 17 [2023-11-24 21:46:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:16,807 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 462 transitions. [2023-11-24 21:46:16,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 462 transitions. [2023-11-24 21:46:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 21:46:16,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:16,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:16,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:46:16,810 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:16,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:16,811 INFO L85 PathProgramCache]: Analyzing trace with hash -185752730, now seen corresponding path program 1 times [2023-11-24 21:46:16,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:16,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603234922] [2023-11-24 21:46:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:16,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603234922] [2023-11-24 21:46:16,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603234922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702786396] [2023-11-24 21:46:16,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,842 INFO L87 Difference]: Start difference. First operand 288 states and 462 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,866 INFO L93 Difference]: Finished difference Result 676 states and 1088 transitions. [2023-11-24 21:46:16,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-24 21:46:16,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,869 INFO L225 Difference]: With dead ends: 676 [2023-11-24 21:46:16,869 INFO L226 Difference]: Without dead ends: 394 [2023-11-24 21:46:16,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,872 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 35 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:16,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 115 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-24 21:46:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2023-11-24 21:46:16,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5805626598465474) internal successors, (618), 391 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 618 transitions. [2023-11-24 21:46:16,895 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 618 transitions. Word has length 17 [2023-11-24 21:46:16,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:16,896 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 618 transitions. [2023-11-24 21:46:16,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,896 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 618 transitions. [2023-11-24 21:46:16,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 21:46:16,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:16,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:16,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:46:16,899 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:16,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1721317753, now seen corresponding path program 1 times [2023-11-24 21:46:16,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:16,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735450376] [2023-11-24 21:46:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:16,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:16,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:16,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735450376] [2023-11-24 21:46:16,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735450376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:16,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:16,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:16,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896327770] [2023-11-24 21:46:16,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:16,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:16,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:16,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:16,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,931 INFO L87 Difference]: Start difference. First operand 392 states and 618 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:16,954 INFO L93 Difference]: Finished difference Result 596 states and 936 transitions. [2023-11-24 21:46:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:16,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-24 21:46:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:16,958 INFO L225 Difference]: With dead ends: 596 [2023-11-24 21:46:16,958 INFO L226 Difference]: Without dead ends: 406 [2023-11-24 21:46:16,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:16,959 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 37 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 113 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 [2023-11-24 21:46:16,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 113 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:16,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-24 21:46:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2023-11-24 21:46:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.553349875930521) internal successors, (626), 403 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 626 transitions. [2023-11-24 21:46:16,999 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 626 transitions. Word has length 18 [2023-11-24 21:46:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:17,000 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 626 transitions. [2023-11-24 21:46:17,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 626 transitions. [2023-11-24 21:46:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 21:46:17,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:17,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:17,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:46:17,006 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:17,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:17,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1463152315, now seen corresponding path program 1 times [2023-11-24 21:46:17,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:17,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840229415] [2023-11-24 21:46:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:17,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:17,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:17,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:17,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840229415] [2023-11-24 21:46:17,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840229415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:17,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:17,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:17,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121261105] [2023-11-24 21:46:17,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:17,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:17,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:17,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:17,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,063 INFO L87 Difference]: Start difference. First operand 404 states and 626 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:17,102 INFO L93 Difference]: Finished difference Result 712 states and 1116 transitions. [2023-11-24 21:46:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:17,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-24 21:46:17,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:17,109 INFO L225 Difference]: With dead ends: 712 [2023-11-24 21:46:17,109 INFO L226 Difference]: Without dead ends: 710 [2023-11-24 21:46:17,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,115 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 26 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:17,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 92 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-11-24 21:46:17,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 580. [2023-11-24 21:46:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 1.5094991364421417) internal successors, (874), 579 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 874 transitions. [2023-11-24 21:46:17,142 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 874 transitions. Word has length 18 [2023-11-24 21:46:17,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:17,142 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 874 transitions. [2023-11-24 21:46:17,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,143 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 874 transitions. [2023-11-24 21:46:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 21:46:17,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:17,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:17,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:46:17,145 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:17,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash -762087737, now seen corresponding path program 1 times [2023-11-24 21:46:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:17,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490142172] [2023-11-24 21:46:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:17,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490142172] [2023-11-24 21:46:17,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490142172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:17,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:17,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:17,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591679930] [2023-11-24 21:46:17,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:17,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:17,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,205 INFO L87 Difference]: Start difference. First operand 580 states and 874 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:17,245 INFO L93 Difference]: Finished difference Result 1336 states and 2012 transitions. [2023-11-24 21:46:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:17,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-24 21:46:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:17,251 INFO L225 Difference]: With dead ends: 1336 [2023-11-24 21:46:17,251 INFO L226 Difference]: Without dead ends: 774 [2023-11-24 21:46:17,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,255 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 34 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:17,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 116 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-11-24 21:46:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 772. [2023-11-24 21:46:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 1.476005188067445) internal successors, (1138), 771 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1138 transitions. [2023-11-24 21:46:17,296 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1138 transitions. Word has length 18 [2023-11-24 21:46:17,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:17,298 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1138 transitions. [2023-11-24 21:46:17,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,298 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1138 transitions. [2023-11-24 21:46:17,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 21:46:17,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:17,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:17,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:46:17,300 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:17,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:17,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1887133851, now seen corresponding path program 1 times [2023-11-24 21:46:17,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:17,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341566798] [2023-11-24 21:46:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:17,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:17,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:17,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341566798] [2023-11-24 21:46:17,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341566798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:17,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:17,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:17,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678702965] [2023-11-24 21:46:17,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:17,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:17,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:17,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:17,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,344 INFO L87 Difference]: Start difference. First operand 772 states and 1138 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:17,386 INFO L93 Difference]: Finished difference Result 1160 states and 1700 transitions. [2023-11-24 21:46:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:17,387 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-24 21:46:17,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:17,391 INFO L225 Difference]: With dead ends: 1160 [2023-11-24 21:46:17,392 INFO L226 Difference]: Without dead ends: 790 [2023-11-24 21:46:17,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,393 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 36 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 109 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 [2023-11-24 21:46:17,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 109 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:17,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-11-24 21:46:17,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 788. [2023-11-24 21:46:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.445997458703939) internal successors, (1138), 787 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1138 transitions. [2023-11-24 21:46:17,431 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1138 transitions. Word has length 19 [2023-11-24 21:46:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:17,432 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1138 transitions. [2023-11-24 21:46:17,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1138 transitions. [2023-11-24 21:46:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 21:46:17,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:17,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:17,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:46:17,435 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:17,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:17,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2145299289, now seen corresponding path program 1 times [2023-11-24 21:46:17,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:17,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160269100] [2023-11-24 21:46:17,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:17,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:17,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:17,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160269100] [2023-11-24 21:46:17,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160269100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:17,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:17,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:17,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955456140] [2023-11-24 21:46:17,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:17,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:17,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:17,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:17,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,486 INFO L87 Difference]: Start difference. First operand 788 states and 1138 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:17,559 INFO L93 Difference]: Finished difference Result 1352 states and 1972 transitions. [2023-11-24 21:46:17,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:17,561 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-24 21:46:17,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:17,568 INFO L225 Difference]: With dead ends: 1352 [2023-11-24 21:46:17,568 INFO L226 Difference]: Without dead ends: 1350 [2023-11-24 21:46:17,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,571 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 23 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:17,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 90 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2023-11-24 21:46:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1156. [2023-11-24 21:46:17,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.4008658008658008) internal successors, (1618), 1155 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1618 transitions. [2023-11-24 21:46:17,619 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1618 transitions. Word has length 19 [2023-11-24 21:46:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:17,619 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1618 transitions. [2023-11-24 21:46:17,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1618 transitions. [2023-11-24 21:46:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-24 21:46:17,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:17,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:17,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:46:17,624 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:17,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1448603429, now seen corresponding path program 1 times [2023-11-24 21:46:17,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:17,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336501872] [2023-11-24 21:46:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:17,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:17,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:17,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336501872] [2023-11-24 21:46:17,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336501872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:17,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:17,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:17,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557298789] [2023-11-24 21:46:17,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:17,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:17,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,676 INFO L87 Difference]: Start difference. First operand 1156 states and 1618 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:17,744 INFO L93 Difference]: Finished difference Result 2632 states and 3668 transitions. [2023-11-24 21:46:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:17,745 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-24 21:46:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:17,753 INFO L225 Difference]: With dead ends: 2632 [2023-11-24 21:46:17,753 INFO L226 Difference]: Without dead ends: 1510 [2023-11-24 21:46:17,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,756 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 33 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:17,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 117 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2023-11-24 21:46:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1508. [2023-11-24 21:46:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1507 states have (on average 1.3603185136031852) internal successors, (2050), 1507 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2050 transitions. [2023-11-24 21:46:17,833 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2050 transitions. Word has length 19 [2023-11-24 21:46:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:17,834 INFO L495 AbstractCegarLoop]: Abstraction has 1508 states and 2050 transitions. [2023-11-24 21:46:17,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2050 transitions. [2023-11-24 21:46:17,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:46:17,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:17,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:17,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:46:17,837 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:17,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:17,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2079984220, now seen corresponding path program 1 times [2023-11-24 21:46:17,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:17,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961635899] [2023-11-24 21:46:17,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:17,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961635899] [2023-11-24 21:46:17,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961635899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:17,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:17,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964471953] [2023-11-24 21:46:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:17,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:17,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,868 INFO L87 Difference]: Start difference. First operand 1508 states and 2050 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:17,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:17,958 INFO L93 Difference]: Finished difference Result 2264 states and 3060 transitions. [2023-11-24 21:46:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:17,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-24 21:46:17,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:17,967 INFO L225 Difference]: With dead ends: 2264 [2023-11-24 21:46:17,967 INFO L226 Difference]: Without dead ends: 1542 [2023-11-24 21:46:17,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:17,969 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 35 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 105 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 [2023-11-24 21:46:17,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 105 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2023-11-24 21:46:18,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1540. [2023-11-24 21:46:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1539 states have (on average 1.332033788174139) internal successors, (2050), 1539 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2050 transitions. [2023-11-24 21:46:18,069 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2050 transitions. Word has length 20 [2023-11-24 21:46:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:18,070 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2050 transitions. [2023-11-24 21:46:18,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2050 transitions. [2023-11-24 21:46:18,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:46:18,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:18,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:18,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:46:18,073 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:18,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1956817638, now seen corresponding path program 1 times [2023-11-24 21:46:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438384332] [2023-11-24 21:46:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:18,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:18,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:18,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438384332] [2023-11-24 21:46:18,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438384332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:18,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:18,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571950971] [2023-11-24 21:46:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:18,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:18,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:18,099 INFO L87 Difference]: Start difference. First operand 1540 states and 2050 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:18,203 INFO L93 Difference]: Finished difference Result 2568 states and 3428 transitions. [2023-11-24 21:46:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:18,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-24 21:46:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:18,216 INFO L225 Difference]: With dead ends: 2568 [2023-11-24 21:46:18,216 INFO L226 Difference]: Without dead ends: 2566 [2023-11-24 21:46:18,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:18,218 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 20 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:18,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 88 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2023-11-24 21:46:18,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2308. [2023-11-24 21:46:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 1.2908539228435196) internal successors, (2978), 2307 states have internal predecessors, (2978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 2978 transitions. [2023-11-24 21:46:18,324 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 2978 transitions. Word has length 20 [2023-11-24 21:46:18,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:18,325 INFO L495 AbstractCegarLoop]: Abstraction has 2308 states and 2978 transitions. [2023-11-24 21:46:18,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 2978 transitions. [2023-11-24 21:46:18,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 21:46:18,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:18,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:18,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 21:46:18,329 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:18,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:18,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1255753060, now seen corresponding path program 1 times [2023-11-24 21:46:18,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:18,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891657446] [2023-11-24 21:46:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:18,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:18,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:18,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891657446] [2023-11-24 21:46:18,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891657446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:18,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:18,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:18,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016765109] [2023-11-24 21:46:18,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:18,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:18,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:18,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:18,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:18,381 INFO L87 Difference]: Start difference. First operand 2308 states and 2978 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:18,507 INFO L93 Difference]: Finished difference Result 5192 states and 6628 transitions. [2023-11-24 21:46:18,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:18,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-24 21:46:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:18,522 INFO L225 Difference]: With dead ends: 5192 [2023-11-24 21:46:18,523 INFO L226 Difference]: Without dead ends: 2950 [2023-11-24 21:46:18,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:18,527 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:18,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 118 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2023-11-24 21:46:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2948. [2023-11-24 21:46:18,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2948 states, 2947 states have (on average 1.2385476756023075) internal successors, (3650), 2947 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:18,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 3650 transitions. [2023-11-24 21:46:18,689 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 3650 transitions. Word has length 20 [2023-11-24 21:46:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:18,689 INFO L495 AbstractCegarLoop]: Abstraction has 2948 states and 3650 transitions. [2023-11-24 21:46:18,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:18,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 3650 transitions. [2023-11-24 21:46:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 21:46:18,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:18,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:18,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 21:46:18,694 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:18,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash -531588592, now seen corresponding path program 1 times [2023-11-24 21:46:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:18,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694015496] [2023-11-24 21:46:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:18,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694015496] [2023-11-24 21:46:18,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694015496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:18,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:18,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:18,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958562038] [2023-11-24 21:46:18,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:18,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:18,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:18,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:18,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:18,717 INFO L87 Difference]: Start difference. First operand 2948 states and 3650 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:18,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:18,860 INFO L93 Difference]: Finished difference Result 4424 states and 5444 transitions. [2023-11-24 21:46:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:18,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-24 21:46:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:18,875 INFO L225 Difference]: With dead ends: 4424 [2023-11-24 21:46:18,875 INFO L226 Difference]: Without dead ends: 3014 [2023-11-24 21:46:18,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:18,879 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 34 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 101 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 [2023-11-24 21:46:18,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 101 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:18,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2023-11-24 21:46:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 3012. [2023-11-24 21:46:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3011 states have (on average 1.2122218532049154) internal successors, (3650), 3011 states have internal predecessors, (3650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 3650 transitions. [2023-11-24 21:46:19,030 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 3650 transitions. Word has length 21 [2023-11-24 21:46:19,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:19,030 INFO L495 AbstractCegarLoop]: Abstraction has 3012 states and 3650 transitions. [2023-11-24 21:46:19,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 3650 transitions. [2023-11-24 21:46:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 21:46:19,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:19,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:19,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-24 21:46:19,035 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:19,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:19,035 INFO L85 PathProgramCache]: Analyzing trace with hash -273423154, now seen corresponding path program 1 times [2023-11-24 21:46:19,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:19,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600738840] [2023-11-24 21:46:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:19,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:19,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:19,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600738840] [2023-11-24 21:46:19,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600738840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:19,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:19,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:19,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681622451] [2023-11-24 21:46:19,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:19,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:19,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:19,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:19,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:19,059 INFO L87 Difference]: Start difference. First operand 3012 states and 3650 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:19,260 INFO L93 Difference]: Finished difference Result 4870 states and 5827 transitions. [2023-11-24 21:46:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-24 21:46:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:19,282 INFO L225 Difference]: With dead ends: 4870 [2023-11-24 21:46:19,282 INFO L226 Difference]: Without dead ends: 4868 [2023-11-24 21:46:19,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:19,284 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 16 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:19,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 85 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:19,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2023-11-24 21:46:19,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4612. [2023-11-24 21:46:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 4611 states have (on average 1.180221210149642) internal successors, (5442), 4611 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 5442 transitions. [2023-11-24 21:46:19,510 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 5442 transitions. Word has length 21 [2023-11-24 21:46:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:19,511 INFO L495 AbstractCegarLoop]: Abstraction has 4612 states and 5442 transitions. [2023-11-24 21:46:19,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 5442 transitions. [2023-11-24 21:46:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-24 21:46:19,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:46:19,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:19,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-24 21:46:19,524 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:46:19,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:19,525 INFO L85 PathProgramCache]: Analyzing trace with hash 427641424, now seen corresponding path program 1 times [2023-11-24 21:46:19,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:19,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390702217] [2023-11-24 21:46:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:19,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:19,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390702217] [2023-11-24 21:46:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390702217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395306891] [2023-11-24 21:46:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:19,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:19,555 INFO L87 Difference]: Start difference. First operand 4612 states and 5442 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:19,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:46:19,798 INFO L93 Difference]: Finished difference Result 10244 states and 11842 transitions. [2023-11-24 21:46:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-24 21:46:19,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:46:19,799 INFO L225 Difference]: With dead ends: 10244 [2023-11-24 21:46:19,799 INFO L226 Difference]: Without dead ends: 0 [2023-11-24 21:46:19,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:19,810 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:46:19,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 117 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:46:19,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-24 21:46:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-24 21:46:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:19,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-24 21:46:19,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2023-11-24 21:46:19,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:46:19,812 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-24 21:46:19,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:19,812 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-24 21:46:19,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-24 21:46:19,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-24 21:46:19,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-24 21:46:19,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-24 21:46:19,831 INFO L899 garLoopResultBuilder]: For program point L93(line 93) no Hoare annotation was computed. [2023-11-24 21:46:19,831 INFO L899 garLoopResultBuilder]: For program point L118(line 118) no Hoare annotation was computed. [2023-11-24 21:46:19,831 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 6 137) no Hoare annotation was computed. [2023-11-24 21:46:19,832 INFO L899 garLoopResultBuilder]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,832 INFO L902 garLoopResultBuilder]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2023-11-24 21:46:19,832 INFO L899 garLoopResultBuilder]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,832 INFO L899 garLoopResultBuilder]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,832 INFO L899 garLoopResultBuilder]: For program point L103(line 103) no Hoare annotation was computed. [2023-11-24 21:46:19,832 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 39) no Hoare annotation was computed. [2023-11-24 21:46:19,832 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,833 INFO L899 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2023-11-24 21:46:19,833 INFO L899 garLoopResultBuilder]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,833 INFO L899 garLoopResultBuilder]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,833 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-24 21:46:19,833 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2023-11-24 21:46:19,833 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,833 INFO L899 garLoopResultBuilder]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,836 INFO L899 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2023-11-24 21:46:19,836 INFO L899 garLoopResultBuilder]: For program point L123(line 123) no Hoare annotation was computed. [2023-11-24 21:46:19,836 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 135) no Hoare annotation was computed. [2023-11-24 21:46:19,836 INFO L899 garLoopResultBuilder]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,836 INFO L899 garLoopResultBuilder]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,836 INFO L899 garLoopResultBuilder]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,837 INFO L899 garLoopResultBuilder]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,837 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-24 21:46:19,837 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 60) no Hoare annotation was computed. [2023-11-24 21:46:19,838 INFO L899 garLoopResultBuilder]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,838 INFO L899 garLoopResultBuilder]: For program point L108(line 108) no Hoare annotation was computed. [2023-11-24 21:46:19,839 INFO L899 garLoopResultBuilder]: For program point L133(lines 7 137) no Hoare annotation was computed. [2023-11-24 21:46:19,839 INFO L899 garLoopResultBuilder]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,839 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 7 137) no Hoare annotation was computed. [2023-11-24 21:46:19,839 INFO L899 garLoopResultBuilder]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2023-11-24 21:46:19,842 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:19,845 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:46:19,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:46:19 BoogieIcfgContainer [2023-11-24 21:46:19,854 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:46:19,855 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:46:19,855 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:46:19,855 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:46:19,856 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:15" (3/4) ... [2023-11-24 21:46:19,858 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:46:19,869 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-24 21:46:19,870 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 21:46:19,870 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 21:46:19,870 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 21:46:19,985 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:46:19,985 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:46:19,986 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:46:19,987 INFO L158 Benchmark]: Toolchain (without parser) took 5366.08ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 115.0MB in the beginning and 92.9MB in the end (delta: 22.1MB). Peak memory consumption was 94.4MB. Max. memory is 16.1GB. [2023-11-24 21:46:19,988 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:46:19,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.76ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 103.6MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:46:19,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.32ms. Allocated memory is still 155.2MB. Free memory was 103.6MB in the beginning and 102.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:46:19,989 INFO L158 Benchmark]: Boogie Preprocessor took 40.56ms. Allocated memory is still 155.2MB. Free memory was 102.2MB in the beginning and 100.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:46:19,990 INFO L158 Benchmark]: RCFGBuilder took 393.79ms. Allocated memory is still 155.2MB. Free memory was 100.1MB in the beginning and 86.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-24 21:46:19,990 INFO L158 Benchmark]: TraceAbstraction took 4458.68ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 86.0MB in the beginning and 98.2MB in the end (delta: -12.1MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2023-11-24 21:46:19,991 INFO L158 Benchmark]: Witness Printer took 130.74ms. Allocated memory is still 226.5MB. Free memory was 98.2MB in the beginning and 92.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:46:20,001 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.76ms. Allocated memory is still 155.2MB. Free memory was 115.0MB in the beginning and 103.6MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.32ms. Allocated memory is still 155.2MB. Free memory was 103.6MB in the beginning and 102.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.56ms. Allocated memory is still 155.2MB. Free memory was 102.2MB in the beginning and 100.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 393.79ms. Allocated memory is still 155.2MB. Free memory was 100.1MB in the beginning and 86.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4458.68ms. Allocated memory was 155.2MB in the beginning and 226.5MB in the end (delta: 71.3MB). Free memory was 86.0MB in the beginning and 98.2MB in the end (delta: -12.1MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. * Witness Printer took 130.74ms. Allocated memory is still 226.5MB. Free memory was 98.2MB in the beginning and 92.9MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 135]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 718 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 718 mSDsluCounter, 2366 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 940 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 143 IncrementalHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1426 mSDtfsCounter, 143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4612occurred in iteration=21, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 1044 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 258 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 367 ConstructedInterpolants, 0 QuantifiedInterpolants, 783 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-24 21:46:20,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cda4f90e-d299-4351-b845-90d0ef4a3802/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE