./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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya --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 [2023-11-29 06:50:37,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:50:37,337 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:50:37,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:50:37,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:50:37,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:50:37,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:50:37,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:50:37,367 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:50:37,367 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:50:37,368 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:50:37,368 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:50:37,369 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:50:37,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:50:37,370 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:50:37,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:50:37,371 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:50:37,371 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:50:37,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:50:37,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:50:37,373 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:50:37,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:50:37,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:50:37,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:50:37,375 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:50:37,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:50:37,376 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:50:37,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:50:37,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:50:37,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:50:37,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:50:37,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:50:37,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:50:37,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:50:37,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:50:37,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:50:37,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:50:37,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:50:37,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:50:37,380 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:50:37,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:50:37,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:50:37,380 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_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7157ba450d9d62b74d19027a6860eb7210e35a76921ceb23a9c0a69add85337 [2023-11-29 06:50:37,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:50:37,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:50:37,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:50:37,623 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:50:37,624 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:50:37,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/locks/test_locks_8.c [2023-11-29 06:50:40,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:50:40,513 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:50:40,513 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/sv-benchmarks/c/locks/test_locks_8.c [2023-11-29 06:50:40,522 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/data/f4322f728/a71036ac032f405fba2919cb5962a3fc/FLAG90c62ba9b [2023-11-29 06:50:40,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/data/f4322f728/a71036ac032f405fba2919cb5962a3fc [2023-11-29 06:50:40,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:50:40,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:50:40,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:50:40,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:50:40,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:50:40,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3240be03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40, skipping insertion in model container [2023-11-29 06:50:40,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,571 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:50:40,702 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_fb35e44a-78f7-489d-86b9-412990748c19/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2023-11-29 06:50:40,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:50:40,726 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:50:40,758 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_fb35e44a-78f7-489d-86b9-412990748c19/sv-benchmarks/c/locks/test_locks_8.c[3218,3231] [2023-11-29 06:50:40,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:50:40,775 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:50:40,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40 WrapperNode [2023-11-29 06:50:40,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:50:40,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:50:40,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:50:40,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:50:40,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,790 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,809 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 124 [2023-11-29 06:50:40,810 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:50:40,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:50:40,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:50:40,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:50:40,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,833 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]. [2023-11-29 06:50:40,833 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:50:40,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:50:40,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:50:40,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:50:40,849 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (1/1) ... [2023-11-29 06:50:40,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:50:40,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:50:40,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:50:40,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:50:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:50:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:50:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:50:40,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:50:40,977 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:50:40,978 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:50:41,138 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:50:41,165 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:50:41,165 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 06:50:41,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:50:41 BoogieIcfgContainer [2023-11-29 06:50:41,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:50:41,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:50:41,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:50:41,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:50:41,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:50:40" (1/3) ... [2023-11-29 06:50:41,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450536e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:50:41, skipping insertion in model container [2023-11-29 06:50:41,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:50:40" (2/3) ... [2023-11-29 06:50:41,174 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450536e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:50:41, skipping insertion in model container [2023-11-29 06:50:41,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:50:41" (3/3) ... [2023-11-29 06:50:41,175 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_8.c [2023-11-29 06:50:41,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:50:41,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:50:41,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:50:41,247 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;@15335894, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:50:41,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:50:41,251 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) [2023-11-29 06:50:41,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 06:50:41,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:41,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:41,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:41,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash 144475037, now seen corresponding path program 1 times [2023-11-29 06:50:41,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:41,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592882424] [2023-11-29 06:50:41,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:41,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:41,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:41,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592882424] [2023-11-29 06:50:41,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592882424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:41,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:41,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:41,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620010991] [2023-11-29 06:50:41,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:41,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:41,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:41,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:41,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:41,501 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) [2023-11-29 06:50:41,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:41,545 INFO L93 Difference]: Finished difference Result 66 states and 117 transitions. [2023-11-29 06:50:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:41,547 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 [2023-11-29 06:50:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:41,556 INFO L225 Difference]: With dead ends: 66 [2023-11-29 06:50:41,556 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 06:50:41,558 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 [2023-11-29 06:50:41,562 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 [2023-11-29 06:50:41,563 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] [2023-11-29 06:50:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 06:50:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 38. [2023-11-29 06:50:41,591 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) [2023-11-29 06:50:41,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 69 transitions. [2023-11-29 06:50:41,593 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 69 transitions. Word has length 14 [2023-11-29 06:50:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:41,593 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 69 transitions. [2023-11-29 06:50:41,594 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) [2023-11-29 06:50:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 69 transitions. [2023-11-29 06:50:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 06:50:41,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:41,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:41,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:50:41,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:41,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash 845539615, now seen corresponding path program 1 times [2023-11-29 06:50:41,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:41,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825919847] [2023-11-29 06:50:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:41,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:41,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:41,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825919847] [2023-11-29 06:50:41,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825919847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:41,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:41,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:41,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304132190] [2023-11-29 06:50:41,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:41,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:41,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:41,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:41,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:41,667 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) [2023-11-29 06:50:41,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:41,686 INFO L93 Difference]: Finished difference Result 93 states and 168 transitions. [2023-11-29 06:50:41,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:41,687 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 [2023-11-29 06:50:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:41,689 INFO L225 Difference]: With dead ends: 93 [2023-11-29 06:50:41,689 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 06:50:41,689 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 [2023-11-29 06:50:41,691 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 [2023-11-29 06:50:41,692 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] [2023-11-29 06:50:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 06:50:41,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-11-29 06:50:41,700 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) [2023-11-29 06:50:41,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2023-11-29 06:50:41,701 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 14 [2023-11-29 06:50:41,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:41,702 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2023-11-29 06:50:41,702 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) [2023-11-29 06:50:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2023-11-29 06:50:41,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:50:41,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:41,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:41,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:50:41,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:41,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:41,705 INFO L85 PathProgramCache]: Analyzing trace with hash 183972847, now seen corresponding path program 1 times [2023-11-29 06:50:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921974696] [2023-11-29 06:50:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:41,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:41,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:41,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921974696] [2023-11-29 06:50:41,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921974696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:41,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:41,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:41,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733250919] [2023-11-29 06:50:41,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:41,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:41,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:41,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:41,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:41,759 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) [2023-11-29 06:50:41,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:41,777 INFO L93 Difference]: Finished difference Result 86 states and 149 transitions. [2023-11-29 06:50:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:41,778 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 [2023-11-29 06:50:41,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:41,779 INFO L225 Difference]: With dead ends: 86 [2023-11-29 06:50:41,780 INFO L226 Difference]: Without dead ends: 59 [2023-11-29 06:50:41,780 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 [2023-11-29 06:50:41,782 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 [2023-11-29 06:50:41,782 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] [2023-11-29 06:50:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-29 06:50:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2023-11-29 06:50:41,790 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) [2023-11-29 06:50:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 99 transitions. [2023-11-29 06:50:41,792 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 99 transitions. Word has length 15 [2023-11-29 06:50:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:41,792 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 99 transitions. [2023-11-29 06:50:41,792 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) [2023-11-29 06:50:41,793 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 99 transitions. [2023-11-29 06:50:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:50:41,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:41,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:41,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:50:41,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:41,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:41,795 INFO L85 PathProgramCache]: Analyzing trace with hash 442138285, now seen corresponding path program 1 times [2023-11-29 06:50:41,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:41,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201475601] [2023-11-29 06:50:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:41,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:41,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:41,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201475601] [2023-11-29 06:50:41,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201475601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:41,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:41,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807984812] [2023-11-29 06:50:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:41,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:41,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:41,844 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) [2023-11-29 06:50:41,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:41,861 INFO L93 Difference]: Finished difference Result 108 states and 188 transitions. [2023-11-29 06:50:41,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:41,862 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 [2023-11-29 06:50:41,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:41,863 INFO L225 Difference]: With dead ends: 108 [2023-11-29 06:50:41,863 INFO L226 Difference]: Without dead ends: 106 [2023-11-29 06:50:41,864 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 [2023-11-29 06:50:41,865 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 [2023-11-29 06:50:41,866 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] [2023-11-29 06:50:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-29 06:50:41,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2023-11-29 06:50:41,874 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) [2023-11-29 06:50:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 132 transitions. [2023-11-29 06:50:41,876 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 132 transitions. Word has length 15 [2023-11-29 06:50:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:41,876 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 132 transitions. [2023-11-29 06:50:41,877 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) [2023-11-29 06:50:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 132 transitions. [2023-11-29 06:50:41,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:50:41,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:41,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:41,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:50:41,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:41,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1143202863, now seen corresponding path program 1 times [2023-11-29 06:50:41,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:41,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346154949] [2023-11-29 06:50:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:41,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:41,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:41,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346154949] [2023-11-29 06:50:41,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346154949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:41,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:41,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:41,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574578263] [2023-11-29 06:50:41,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:41,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:41,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:41,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:41,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:41,923 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) [2023-11-29 06:50:41,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:41,944 INFO L93 Difference]: Finished difference Result 180 states and 314 transitions. [2023-11-29 06:50:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:41,944 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 [2023-11-29 06:50:41,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:41,946 INFO L225 Difference]: With dead ends: 180 [2023-11-29 06:50:41,946 INFO L226 Difference]: Without dead ends: 108 [2023-11-29 06:50:41,947 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 [2023-11-29 06:50:41,948 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 [2023-11-29 06:50:41,948 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] [2023-11-29 06:50:41,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-29 06:50:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2023-11-29 06:50:41,959 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) [2023-11-29 06:50:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 182 transitions. [2023-11-29 06:50:41,960 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 182 transitions. Word has length 15 [2023-11-29 06:50:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:41,961 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 182 transitions. [2023-11-29 06:50:41,961 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) [2023-11-29 06:50:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 182 transitions. [2023-11-29 06:50:41,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 06:50:41,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:41,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:41,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:50:41,963 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:41,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:41,964 INFO L85 PathProgramCache]: Analyzing trace with hash 821599284, now seen corresponding path program 1 times [2023-11-29 06:50:41,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:41,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930452639] [2023-11-29 06:50:41,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:41,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930452639] [2023-11-29 06:50:42,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930452639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258692732] [2023-11-29 06:50:42,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,027 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) [2023-11-29 06:50:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,043 INFO L93 Difference]: Finished difference Result 161 states and 273 transitions. [2023-11-29 06:50:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,044 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 [2023-11-29 06:50:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,065 INFO L225 Difference]: With dead ends: 161 [2023-11-29 06:50:42,067 INFO L226 Difference]: Without dead ends: 110 [2023-11-29 06:50:42,067 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 [2023-11-29 06:50:42,069 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 [2023-11-29 06:50:42,073 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] [2023-11-29 06:50:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-29 06:50:42,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2023-11-29 06:50:42,082 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) [2023-11-29 06:50:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 182 transitions. [2023-11-29 06:50:42,084 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 182 transitions. Word has length 16 [2023-11-29 06:50:42,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,084 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 182 transitions. [2023-11-29 06:50:42,084 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) [2023-11-29 06:50:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 182 transitions. [2023-11-29 06:50:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 06:50:42,085 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:50:42,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1079764722, now seen corresponding path program 1 times [2023-11-29 06:50:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476016659] [2023-11-29 06:50:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476016659] [2023-11-29 06:50:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476016659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835682277] [2023-11-29 06:50:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,119 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) [2023-11-29 06:50:42,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,136 INFO L93 Difference]: Finished difference Result 308 states and 520 transitions. [2023-11-29 06:50:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,136 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 [2023-11-29 06:50:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,138 INFO L225 Difference]: With dead ends: 308 [2023-11-29 06:50:42,138 INFO L226 Difference]: Without dead ends: 206 [2023-11-29 06:50:42,139 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 [2023-11-29 06:50:42,140 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 [2023-11-29 06:50:42,140 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] [2023-11-29 06:50:42,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-29 06:50:42,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2023-11-29 06:50:42,155 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) [2023-11-29 06:50:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 338 transitions. [2023-11-29 06:50:42,156 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 338 transitions. Word has length 16 [2023-11-29 06:50:42,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,157 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 338 transitions. [2023-11-29 06:50:42,157 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) [2023-11-29 06:50:42,157 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 338 transitions. [2023-11-29 06:50:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 06:50:42,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:50:42,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash 378700144, now seen corresponding path program 1 times [2023-11-29 06:50:42,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143882328] [2023-11-29 06:50:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143882328] [2023-11-29 06:50:42,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143882328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100451992] [2023-11-29 06:50:42,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,191 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) [2023-11-29 06:50:42,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,207 INFO L93 Difference]: Finished difference Result 256 states and 428 transitions. [2023-11-29 06:50:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,207 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 [2023-11-29 06:50:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,209 INFO L225 Difference]: With dead ends: 256 [2023-11-29 06:50:42,209 INFO L226 Difference]: Without dead ends: 254 [2023-11-29 06:50:42,209 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 [2023-11-29 06:50:42,210 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 [2023-11-29 06:50:42,211 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] [2023-11-29 06:50:42,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-29 06:50:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 204. [2023-11-29 06:50:42,221 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) [2023-11-29 06:50:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 334 transitions. [2023-11-29 06:50:42,223 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 334 transitions. Word has length 16 [2023-11-29 06:50:42,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,223 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 334 transitions. [2023-11-29 06:50:42,223 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) [2023-11-29 06:50:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 334 transitions. [2023-11-29 06:50:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:50:42,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:50:42,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash -886817308, now seen corresponding path program 1 times [2023-11-29 06:50:42,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757857033] [2023-11-29 06:50:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757857033] [2023-11-29 06:50:42,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757857033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833915991] [2023-11-29 06:50:42,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,256 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) [2023-11-29 06:50:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,274 INFO L93 Difference]: Finished difference Result 372 states and 616 transitions. [2023-11-29 06:50:42,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,274 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 [2023-11-29 06:50:42,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,277 INFO L225 Difference]: With dead ends: 372 [2023-11-29 06:50:42,277 INFO L226 Difference]: Without dead ends: 370 [2023-11-29 06:50:42,277 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 [2023-11-29 06:50:42,278 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 [2023-11-29 06:50:42,278 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] [2023-11-29 06:50:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-29 06:50:42,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 288. [2023-11-29 06:50:42,292 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) [2023-11-29 06:50:42,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 462 transitions. [2023-11-29 06:50:42,293 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 462 transitions. Word has length 17 [2023-11-29 06:50:42,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,293 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 462 transitions. [2023-11-29 06:50:42,293 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) [2023-11-29 06:50:42,293 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 462 transitions. [2023-11-29 06:50:42,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:50:42,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:50:42,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,296 INFO L85 PathProgramCache]: Analyzing trace with hash -185752730, now seen corresponding path program 1 times [2023-11-29 06:50:42,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114231744] [2023-11-29 06:50:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114231744] [2023-11-29 06:50:42,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114231744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988044098] [2023-11-29 06:50:42,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,320 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) [2023-11-29 06:50:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,340 INFO L93 Difference]: Finished difference Result 676 states and 1088 transitions. [2023-11-29 06:50:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,340 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 [2023-11-29 06:50:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,343 INFO L225 Difference]: With dead ends: 676 [2023-11-29 06:50:42,343 INFO L226 Difference]: Without dead ends: 394 [2023-11-29 06:50:42,344 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 [2023-11-29 06:50:42,345 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 [2023-11-29 06:50:42,345 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] [2023-11-29 06:50:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-29 06:50:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2023-11-29 06:50:42,358 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) [2023-11-29 06:50:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 618 transitions. [2023-11-29 06:50:42,360 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 618 transitions. Word has length 17 [2023-11-29 06:50:42,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,361 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 618 transitions. [2023-11-29 06:50:42,361 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) [2023-11-29 06:50:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 618 transitions. [2023-11-29 06:50:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:50:42,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:50:42,362 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1721317753, now seen corresponding path program 1 times [2023-11-29 06:50:42,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349895236] [2023-11-29 06:50:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349895236] [2023-11-29 06:50:42,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349895236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234860101] [2023-11-29 06:50:42,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,388 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) [2023-11-29 06:50:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,406 INFO L93 Difference]: Finished difference Result 596 states and 936 transitions. [2023-11-29 06:50:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,407 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 [2023-11-29 06:50:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,409 INFO L225 Difference]: With dead ends: 596 [2023-11-29 06:50:42,409 INFO L226 Difference]: Without dead ends: 406 [2023-11-29 06:50:42,410 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 [2023-11-29 06:50:42,410 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 [2023-11-29 06:50:42,410 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] [2023-11-29 06:50:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-29 06:50:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2023-11-29 06:50:42,421 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) [2023-11-29 06:50:42,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 626 transitions. [2023-11-29 06:50:42,423 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 626 transitions. Word has length 18 [2023-11-29 06:50:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,423 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 626 transitions. [2023-11-29 06:50:42,423 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) [2023-11-29 06:50:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 626 transitions. [2023-11-29 06:50:42,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:50:42,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:50:42,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1463152315, now seen corresponding path program 1 times [2023-11-29 06:50:42,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713220005] [2023-11-29 06:50:42,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713220005] [2023-11-29 06:50:42,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713220005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149993380] [2023-11-29 06:50:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,449 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) [2023-11-29 06:50:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,473 INFO L93 Difference]: Finished difference Result 712 states and 1116 transitions. [2023-11-29 06:50:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,473 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 [2023-11-29 06:50:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,477 INFO L225 Difference]: With dead ends: 712 [2023-11-29 06:50:42,477 INFO L226 Difference]: Without dead ends: 710 [2023-11-29 06:50:42,478 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 [2023-11-29 06:50:42,478 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 [2023-11-29 06:50:42,479 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] [2023-11-29 06:50:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2023-11-29 06:50:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 580. [2023-11-29 06:50:42,494 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) [2023-11-29 06:50:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 874 transitions. [2023-11-29 06:50:42,496 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 874 transitions. Word has length 18 [2023-11-29 06:50:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,497 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 874 transitions. [2023-11-29 06:50:42,497 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) [2023-11-29 06:50:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 874 transitions. [2023-11-29 06:50:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:50:42,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 06:50:42,499 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,499 INFO L85 PathProgramCache]: Analyzing trace with hash -762087737, now seen corresponding path program 1 times [2023-11-29 06:50:42,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384143692] [2023-11-29 06:50:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384143692] [2023-11-29 06:50:42,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384143692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480837094] [2023-11-29 06:50:42,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,523 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) [2023-11-29 06:50:42,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,572 INFO L93 Difference]: Finished difference Result 1336 states and 2012 transitions. [2023-11-29 06:50:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,573 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 [2023-11-29 06:50:42,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,577 INFO L225 Difference]: With dead ends: 1336 [2023-11-29 06:50:42,577 INFO L226 Difference]: Without dead ends: 774 [2023-11-29 06:50:42,578 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 [2023-11-29 06:50:42,578 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 [2023-11-29 06:50:42,579 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] [2023-11-29 06:50:42,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-11-29 06:50:42,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 772. [2023-11-29 06:50:42,607 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) [2023-11-29 06:50:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1138 transitions. [2023-11-29 06:50:42,610 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1138 transitions. Word has length 18 [2023-11-29 06:50:42,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,610 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1138 transitions. [2023-11-29 06:50:42,610 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) [2023-11-29 06:50:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1138 transitions. [2023-11-29 06:50:42,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:50:42,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:50:42,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1887133851, now seen corresponding path program 1 times [2023-11-29 06:50:42,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312282365] [2023-11-29 06:50:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312282365] [2023-11-29 06:50:42,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312282365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211562671] [2023-11-29 06:50:42,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,635 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) [2023-11-29 06:50:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,665 INFO L93 Difference]: Finished difference Result 1160 states and 1700 transitions. [2023-11-29 06:50:42,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,666 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 [2023-11-29 06:50:42,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,671 INFO L225 Difference]: With dead ends: 1160 [2023-11-29 06:50:42,671 INFO L226 Difference]: Without dead ends: 790 [2023-11-29 06:50:42,672 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 [2023-11-29 06:50:42,672 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 [2023-11-29 06:50:42,673 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] [2023-11-29 06:50:42,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2023-11-29 06:50:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 788. [2023-11-29 06:50:42,702 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) [2023-11-29 06:50:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1138 transitions. [2023-11-29 06:50:42,704 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1138 transitions. Word has length 19 [2023-11-29 06:50:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,705 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1138 transitions. [2023-11-29 06:50:42,705 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) [2023-11-29 06:50:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1138 transitions. [2023-11-29 06:50:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:50:42,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,706 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 06:50:42,707 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2145299289, now seen corresponding path program 1 times [2023-11-29 06:50:42,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395684885] [2023-11-29 06:50:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395684885] [2023-11-29 06:50:42,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395684885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138667905] [2023-11-29 06:50:42,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,731 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) [2023-11-29 06:50:42,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,769 INFO L93 Difference]: Finished difference Result 1352 states and 1972 transitions. [2023-11-29 06:50:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,770 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 [2023-11-29 06:50:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,777 INFO L225 Difference]: With dead ends: 1352 [2023-11-29 06:50:42,777 INFO L226 Difference]: Without dead ends: 1350 [2023-11-29 06:50:42,777 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 [2023-11-29 06:50:42,778 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 [2023-11-29 06:50:42,778 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] [2023-11-29 06:50:42,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2023-11-29 06:50:42,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1156. [2023-11-29 06:50:42,810 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) [2023-11-29 06:50:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1618 transitions. [2023-11-29 06:50:42,813 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1618 transitions. Word has length 19 [2023-11-29 06:50:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,813 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1618 transitions. [2023-11-29 06:50:42,813 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) [2023-11-29 06:50:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1618 transitions. [2023-11-29 06:50:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:50:42,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,815 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:50:42,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:50:42,815 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1448603429, now seen corresponding path program 1 times [2023-11-29 06:50:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087422806] [2023-11-29 06:50:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087422806] [2023-11-29 06:50:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087422806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332454058] [2023-11-29 06:50:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,836 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) [2023-11-29 06:50:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:42,886 INFO L93 Difference]: Finished difference Result 2632 states and 3668 transitions. [2023-11-29 06:50:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:42,887 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 [2023-11-29 06:50:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:42,893 INFO L225 Difference]: With dead ends: 2632 [2023-11-29 06:50:42,893 INFO L226 Difference]: Without dead ends: 1510 [2023-11-29 06:50:42,895 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 [2023-11-29 06:50:42,895 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 [2023-11-29 06:50:42,895 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] [2023-11-29 06:50:42,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2023-11-29 06:50:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1508. [2023-11-29 06:50:42,956 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) [2023-11-29 06:50:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2050 transitions. [2023-11-29 06:50:42,960 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2050 transitions. Word has length 19 [2023-11-29 06:50:42,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:42,960 INFO L495 AbstractCegarLoop]: Abstraction has 1508 states and 2050 transitions. [2023-11-29 06:50:42,960 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) [2023-11-29 06:50:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2050 transitions. [2023-11-29 06:50:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 06:50:42,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:42,962 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] [2023-11-29 06:50:42,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:50:42,962 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:42,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2079984220, now seen corresponding path program 1 times [2023-11-29 06:50:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:42,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587323549] [2023-11-29 06:50:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:42,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:42,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:42,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587323549] [2023-11-29 06:50:42,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587323549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:42,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:42,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061362314] [2023-11-29 06:50:42,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:42,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:42,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:42,983 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) [2023-11-29 06:50:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:43,030 INFO L93 Difference]: Finished difference Result 2264 states and 3060 transitions. [2023-11-29 06:50:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:43,031 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 [2023-11-29 06:50:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:43,037 INFO L225 Difference]: With dead ends: 2264 [2023-11-29 06:50:43,037 INFO L226 Difference]: Without dead ends: 1542 [2023-11-29 06:50:43,038 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 [2023-11-29 06:50:43,038 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 [2023-11-29 06:50:43,038 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] [2023-11-29 06:50:43,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2023-11-29 06:50:43,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1540. [2023-11-29 06:50:43,081 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) [2023-11-29 06:50:43,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2050 transitions. [2023-11-29 06:50:43,085 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2050 transitions. Word has length 20 [2023-11-29 06:50:43,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:43,086 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2050 transitions. [2023-11-29 06:50:43,086 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) [2023-11-29 06:50:43,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2050 transitions. [2023-11-29 06:50:43,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 06:50:43,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:43,087 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] [2023-11-29 06:50:43,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:50:43,088 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:43,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:43,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1956817638, now seen corresponding path program 1 times [2023-11-29 06:50:43,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:43,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669335120] [2023-11-29 06:50:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:43,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:43,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669335120] [2023-11-29 06:50:43,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669335120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:43,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:43,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:43,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468234946] [2023-11-29 06:50:43,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:43,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:43,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:43,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:43,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:43,106 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) [2023-11-29 06:50:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:43,168 INFO L93 Difference]: Finished difference Result 2568 states and 3428 transitions. [2023-11-29 06:50:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:43,169 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 [2023-11-29 06:50:43,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:43,179 INFO L225 Difference]: With dead ends: 2568 [2023-11-29 06:50:43,179 INFO L226 Difference]: Without dead ends: 2566 [2023-11-29 06:50:43,180 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 [2023-11-29 06:50:43,181 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 [2023-11-29 06:50:43,181 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] [2023-11-29 06:50:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2023-11-29 06:50:43,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2308. [2023-11-29 06:50:43,239 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) [2023-11-29 06:50:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 2978 transitions. [2023-11-29 06:50:43,245 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 2978 transitions. Word has length 20 [2023-11-29 06:50:43,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:43,246 INFO L495 AbstractCegarLoop]: Abstraction has 2308 states and 2978 transitions. [2023-11-29 06:50:43,246 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) [2023-11-29 06:50:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 2978 transitions. [2023-11-29 06:50:43,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 06:50:43,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:43,249 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] [2023-11-29 06:50:43,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 06:50:43,249 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:43,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1255753060, now seen corresponding path program 1 times [2023-11-29 06:50:43,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:43,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502558916] [2023-11-29 06:50:43,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:43,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:43,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502558916] [2023-11-29 06:50:43,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502558916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:43,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:43,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:43,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093502677] [2023-11-29 06:50:43,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:43,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:43,269 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) [2023-11-29 06:50:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:43,383 INFO L93 Difference]: Finished difference Result 5192 states and 6628 transitions. [2023-11-29 06:50:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:43,383 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 [2023-11-29 06:50:43,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:43,394 INFO L225 Difference]: With dead ends: 5192 [2023-11-29 06:50:43,394 INFO L226 Difference]: Without dead ends: 2950 [2023-11-29 06:50:43,396 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 [2023-11-29 06:50:43,397 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 [2023-11-29 06:50:43,397 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] [2023-11-29 06:50:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2023-11-29 06:50:43,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2948. [2023-11-29 06:50:43,479 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) [2023-11-29 06:50:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2948 states to 2948 states and 3650 transitions. [2023-11-29 06:50:43,487 INFO L78 Accepts]: Start accepts. Automaton has 2948 states and 3650 transitions. Word has length 20 [2023-11-29 06:50:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:43,487 INFO L495 AbstractCegarLoop]: Abstraction has 2948 states and 3650 transitions. [2023-11-29 06:50:43,487 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) [2023-11-29 06:50:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2948 states and 3650 transitions. [2023-11-29 06:50:43,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:50:43,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:43,490 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] [2023-11-29 06:50:43,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 06:50:43,490 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:43,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash -531588592, now seen corresponding path program 1 times [2023-11-29 06:50:43,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:43,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234316149] [2023-11-29 06:50:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:43,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:43,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234316149] [2023-11-29 06:50:43,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234316149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:43,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:43,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:43,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066007973] [2023-11-29 06:50:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:43,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:43,508 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) [2023-11-29 06:50:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:43,580 INFO L93 Difference]: Finished difference Result 4424 states and 5444 transitions. [2023-11-29 06:50:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:43,580 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 [2023-11-29 06:50:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:43,591 INFO L225 Difference]: With dead ends: 4424 [2023-11-29 06:50:43,591 INFO L226 Difference]: Without dead ends: 3014 [2023-11-29 06:50:43,592 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 [2023-11-29 06:50:43,593 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 [2023-11-29 06:50:43,593 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] [2023-11-29 06:50:43,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2023-11-29 06:50:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 3012. [2023-11-29 06:50:43,700 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) [2023-11-29 06:50:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 3650 transitions. [2023-11-29 06:50:43,707 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 3650 transitions. Word has length 21 [2023-11-29 06:50:43,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:43,707 INFO L495 AbstractCegarLoop]: Abstraction has 3012 states and 3650 transitions. [2023-11-29 06:50:43,708 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) [2023-11-29 06:50:43,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 3650 transitions. [2023-11-29 06:50:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:50:43,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:43,710 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] [2023-11-29 06:50:43,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 06:50:43,711 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:43,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:43,711 INFO L85 PathProgramCache]: Analyzing trace with hash -273423154, now seen corresponding path program 1 times [2023-11-29 06:50:43,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:43,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749436858] [2023-11-29 06:50:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:43,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:43,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749436858] [2023-11-29 06:50:43,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749436858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:43,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:43,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:43,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947931239] [2023-11-29 06:50:43,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:43,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:43,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:43,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:43,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:43,729 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) [2023-11-29 06:50:43,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:43,860 INFO L93 Difference]: Finished difference Result 4870 states and 5827 transitions. [2023-11-29 06:50:43,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:43,861 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 [2023-11-29 06:50:43,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:43,877 INFO L225 Difference]: With dead ends: 4870 [2023-11-29 06:50:43,878 INFO L226 Difference]: Without dead ends: 4868 [2023-11-29 06:50:43,879 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 [2023-11-29 06:50:43,879 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 [2023-11-29 06:50:43,880 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] [2023-11-29 06:50:43,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2023-11-29 06:50:44,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4612. [2023-11-29 06:50:44,036 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) [2023-11-29 06:50:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 5442 transitions. [2023-11-29 06:50:44,050 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 5442 transitions. Word has length 21 [2023-11-29 06:50:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:44,050 INFO L495 AbstractCegarLoop]: Abstraction has 4612 states and 5442 transitions. [2023-11-29 06:50:44,050 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) [2023-11-29 06:50:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 5442 transitions. [2023-11-29 06:50:44,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:50:44,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:50:44,056 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] [2023-11-29 06:50:44,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 06:50:44,057 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:50:44,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:50:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash 427641424, now seen corresponding path program 1 times [2023-11-29 06:50:44,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:50:44,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025752413] [2023-11-29 06:50:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:50:44,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:50:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:50:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:50:44,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:50:44,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025752413] [2023-11-29 06:50:44,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025752413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:50:44,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:50:44,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:50:44,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599159201] [2023-11-29 06:50:44,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:50:44,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:50:44,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:50:44,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:50:44,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:50:44,080 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) [2023-11-29 06:50:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:50:44,268 INFO L93 Difference]: Finished difference Result 10244 states and 11842 transitions. [2023-11-29 06:50:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:50:44,268 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 [2023-11-29 06:50:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:50:44,269 INFO L225 Difference]: With dead ends: 10244 [2023-11-29 06:50:44,269 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 06:50:44,277 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 [2023-11-29 06:50:44,277 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 [2023-11-29 06:50:44,278 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] [2023-11-29 06:50:44,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 06:50:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 06:50:44,278 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) [2023-11-29 06:50:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 06:50:44,278 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2023-11-29 06:50:44,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:50:44,278 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 06:50:44,279 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) [2023-11-29 06:50:44,279 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 06:50:44,279 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 06:50:44,281 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 06:50:44,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 06:50:44,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 06:50:44,291 INFO L899 garLoopResultBuilder]: For program point L93(line 93) no Hoare annotation was computed. [2023-11-29 06:50:44,291 INFO L899 garLoopResultBuilder]: For program point L118(line 118) no Hoare annotation was computed. [2023-11-29 06:50:44,291 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 6 137) no Hoare annotation was computed. [2023-11-29 06:50:44,291 INFO L899 garLoopResultBuilder]: For program point L102-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,291 INFO L902 garLoopResultBuilder]: At program point L127-1(lines 35 132) the Hoare annotation is: true [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L86-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L78-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L103(line 103) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 39) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L62-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L112-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2023-11-29 06:50:44,292 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point L122-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point L123(line 123) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 135) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point L82-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point L107-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point L74-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point L66-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 06:50:44,293 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 60) no Hoare annotation was computed. [2023-11-29 06:50:44,294 INFO L899 garLoopResultBuilder]: For program point L58-2(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,294 INFO L899 garLoopResultBuilder]: For program point L108(line 108) no Hoare annotation was computed. [2023-11-29 06:50:44,294 INFO L899 garLoopResultBuilder]: For program point L133(lines 7 137) no Hoare annotation was computed. [2023-11-29 06:50:44,294 INFO L899 garLoopResultBuilder]: For program point L92-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,294 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 7 137) no Hoare annotation was computed. [2023-11-29 06:50:44,294 INFO L899 garLoopResultBuilder]: For program point L117-1(lines 35 132) no Hoare annotation was computed. [2023-11-29 06:50:44,297 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] [2023-11-29 06:50:44,298 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:50:44,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:50:44 BoogieIcfgContainer [2023-11-29 06:50:44,305 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:50:44,306 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:50:44,306 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:50:44,306 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:50:44,306 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:50:41" (3/4) ... [2023-11-29 06:50:44,308 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 06:50:44,315 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-29 06:50:44,315 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 06:50:44,316 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 06:50:44,316 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 06:50:44,388 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 06:50:44,389 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 06:50:44,389 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:50:44,390 INFO L158 Benchmark]: Toolchain (without parser) took 3849.71ms. Allocated memory was 201.3MB in the beginning and 306.2MB in the end (delta: 104.9MB). Free memory was 167.3MB in the beginning and 146.5MB in the end (delta: 20.8MB). Peak memory consumption was 126.2MB. Max. memory is 16.1GB. [2023-11-29 06:50:44,390 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:50:44,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.90ms. Allocated memory is still 201.3MB. Free memory was 167.3MB in the beginning and 171.9MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:50:44,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.26ms. Allocated memory is still 201.3MB. Free memory was 171.9MB in the beginning and 169.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:50:44,391 INFO L158 Benchmark]: Boogie Preprocessor took 36.76ms. Allocated memory is still 201.3MB. Free memory was 169.8MB in the beginning and 168.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:50:44,392 INFO L158 Benchmark]: RCFGBuilder took 317.69ms. Allocated memory is still 201.3MB. Free memory was 168.4MB in the beginning and 154.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-29 06:50:44,392 INFO L158 Benchmark]: TraceAbstraction took 3136.78ms. Allocated memory was 201.3MB in the beginning and 306.2MB in the end (delta: 104.9MB). Free memory was 153.8MB in the beginning and 151.8MB in the end (delta: 2.0MB). Peak memory consumption was 108.8MB. Max. memory is 16.1GB. [2023-11-29 06:50:44,392 INFO L158 Benchmark]: Witness Printer took 83.36ms. Allocated memory is still 306.2MB. Free memory was 151.8MB in the beginning and 146.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 06:50:44,394 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.90ms. Allocated memory is still 201.3MB. Free memory was 167.3MB in the beginning and 171.9MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.26ms. Allocated memory is still 201.3MB. Free memory was 171.9MB in the beginning and 169.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.76ms. Allocated memory is still 201.3MB. Free memory was 169.8MB in the beginning and 168.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 317.69ms. Allocated memory is still 201.3MB. Free memory was 168.4MB in the beginning and 154.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3136.78ms. Allocated memory was 201.3MB in the beginning and 306.2MB in the end (delta: 104.9MB). Free memory was 153.8MB in the beginning and 151.8MB in the end (delta: 2.0MB). Peak memory consumption was 108.8MB. Max. memory is 16.1GB. * Witness Printer took 83.36ms. Allocated memory is still 306.2MB. Free memory was 151.8MB in the beginning and 146.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. 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: 3.1s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 718 SdHoareTripleChecker+Valid, 0.2s 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: 0.8s 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, 0.1s SatisfiabilityAnalysisTime, 0.5s 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! [2023-11-29 06:50:44,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb35e44a-78f7-489d-86b9-412990748c19/bin/uautomizer-verify-BQ2R08f2Ya/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