./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ --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 dd9c6b82321d3b192dc5809ecc7ca6021855509a18ab1d23ca9eeb538976a0c0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:35:48,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:35:48,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:35:48,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:35:48,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:35:48,343 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:35:48,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:35:48,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:35:48,345 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:35:48,353 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:35:48,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:35:48,354 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:35:48,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:35:48,356 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:35:48,357 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:35:48,357 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:35:48,358 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:35:48,358 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:35:48,358 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:35:48,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:35:48,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:35:48,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:35:48,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:35:48,363 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:35:48,363 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:35:48,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:35:48,364 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:35:48,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:35:48,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:35:48,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:35:48,367 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:35:48,367 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:48,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:35:48,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:35:48,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:35:48,368 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:35:48,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:35:48,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:35:48,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:35:48,369 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:35:48,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:35:48,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:35:48,370 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_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd9c6b82321d3b192dc5809ecc7ca6021855509a18ab1d23ca9eeb538976a0c0 [2023-11-23 21:35:48,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:35:48,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:35:48,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:35:48,739 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:35:48,739 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:35:48,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/locks/test_locks_11.c [2023-11-23 21:35:52,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:35:52,233 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:35:52,233 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/sv-benchmarks/c/locks/test_locks_11.c [2023-11-23 21:35:52,242 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/data/60c5eb855/010ebb77952d41d986f5199d31e6d758/FLAGc0c96b5b3 [2023-11-23 21:35:52,259 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/data/60c5eb855/010ebb77952d41d986f5199d31e6d758 [2023-11-23 21:35:52,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:35:52,263 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:35:52,265 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:52,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:35:52,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:35:52,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca062ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52, skipping insertion in model container [2023-11-23 21:35:52,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,301 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:35:52,571 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_6320fa35-9e7d-46e3-82eb-0a47470396bb/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2023-11-23 21:35:52,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:52,597 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:35:52,652 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_6320fa35-9e7d-46e3-82eb-0a47470396bb/sv-benchmarks/c/locks/test_locks_11.c[4246,4259] [2023-11-23 21:35:52,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:52,674 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:35:52,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52 WrapperNode [2023-11-23 21:35:52,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:52,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:52,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:35:52,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:35:52,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,742 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 160 [2023-11-23 21:35:52,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:52,743 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:35:52,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:35:52,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:35:52,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,769 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,786 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 21:35:52,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,796 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,810 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:35:52,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:35:52,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:35:52,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:35:52,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (1/1) ... [2023-11-23 21:35:52,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:52,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:52,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:52,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:35:52,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:35:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:35:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:35:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:35:52,994 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:35:52,997 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:35:53,325 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:35:53,356 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:35:53,356 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:35:53,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:53 BoogieIcfgContainer [2023-11-23 21:35:53,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:35:53,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:35:53,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:35:53,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:35:53,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:35:52" (1/3) ... [2023-11-23 21:35:53,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c534504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:53, skipping insertion in model container [2023-11-23 21:35:53,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:52" (2/3) ... [2023-11-23 21:35:53,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c534504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:53, skipping insertion in model container [2023-11-23 21:35:53,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:53" (3/3) ... [2023-11-23 21:35:53,367 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2023-11-23 21:35:53,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:35:53,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:35:53,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:35:53,492 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;@547d7e5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:35:53,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:35:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 40 states have internal predecessors, (76), 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) [2023-11-23 21:35:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:35:53,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:53,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:53,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:53,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:53,545 INFO L85 PathProgramCache]: Analyzing trace with hash 798475764, now seen corresponding path program 1 times [2023-11-23 21:35:53,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:53,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102028056] [2023-11-23 21:35:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:53,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:53,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:53,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102028056] [2023-11-23 21:35:53,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102028056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:53,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:53,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:53,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582242993] [2023-11-23 21:35:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:53,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:53,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:53,838 INFO L87 Difference]: Start difference. First operand has 41 states, 39 states have (on average 1.9487179487179487) internal successors, (76), 40 states have internal predecessors, (76), 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 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) [2023-11-23 21:35:53,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:53,920 INFO L93 Difference]: Finished difference Result 84 states and 153 transitions. [2023-11-23 21:35:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:53,922 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 [2023-11-23 21:35:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:53,933 INFO L225 Difference]: With dead ends: 84 [2023-11-23 21:35:53,933 INFO L226 Difference]: Without dead ends: 74 [2023-11-23 21:35:53,936 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 [2023-11-23 21:35:53,940 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 55 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 142 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 [2023-11-23 21:35:53,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 142 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:53,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-23 21:35:53,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 50. [2023-11-23 21:35:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.8979591836734695) internal successors, (93), 49 states have internal predecessors, (93), 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) [2023-11-23 21:35:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 93 transitions. [2023-11-23 21:35:53,984 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 93 transitions. Word has length 17 [2023-11-23 21:35:53,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:53,984 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 93 transitions. [2023-11-23 21:35:53,985 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) [2023-11-23 21:35:53,985 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 93 transitions. [2023-11-23 21:35:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:35:53,986 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:53,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:53,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:35:53,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:53,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:53,988 INFO L85 PathProgramCache]: Analyzing trace with hash -212641486, now seen corresponding path program 1 times [2023-11-23 21:35:53,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:53,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006693706] [2023-11-23 21:35:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:53,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:54,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:54,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006693706] [2023-11-23 21:35:54,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006693706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:54,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:54,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233498825] [2023-11-23 21:35:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:54,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:54,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:54,110 INFO L87 Difference]: Start difference. First operand 50 states and 93 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) [2023-11-23 21:35:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:54,161 INFO L93 Difference]: Finished difference Result 123 states and 228 transitions. [2023-11-23 21:35:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:54,165 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 [2023-11-23 21:35:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:54,166 INFO L225 Difference]: With dead ends: 123 [2023-11-23 21:35:54,166 INFO L226 Difference]: Without dead ends: 74 [2023-11-23 21:35:54,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:54,169 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 53 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 154 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 [2023-11-23 21:35:54,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 154 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-23 21:35:54,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2023-11-23 21:35:54,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.8732394366197183) internal successors, (133), 71 states have internal predecessors, (133), 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) [2023-11-23 21:35:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 133 transitions. [2023-11-23 21:35:54,193 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 133 transitions. Word has length 17 [2023-11-23 21:35:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:54,193 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 133 transitions. [2023-11-23 21:35:54,194 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) [2023-11-23 21:35:54,194 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 133 transitions. [2023-11-23 21:35:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:35:54,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:54,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:54,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:35:54,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:54,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:54,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1016842068, now seen corresponding path program 1 times [2023-11-23 21:35:54,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:54,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570599861] [2023-11-23 21:35:54,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:54,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:54,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:54,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:54,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570599861] [2023-11-23 21:35:54,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570599861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:54,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:54,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:54,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086284050] [2023-11-23 21:35:54,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:54,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:54,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:54,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:54,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:54,306 INFO L87 Difference]: Start difference. First operand 72 states and 133 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) [2023-11-23 21:35:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:54,355 INFO L93 Difference]: Finished difference Result 113 states and 203 transitions. [2023-11-23 21:35:54,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:54,356 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 [2023-11-23 21:35:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:54,358 INFO L225 Difference]: With dead ends: 113 [2023-11-23 21:35:54,358 INFO L226 Difference]: Without dead ends: 77 [2023-11-23 21:35:54,359 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 [2023-11-23 21:35:54,360 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 55 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 173 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 [2023-11-23 21:35:54,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 173 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:54,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-23 21:35:54,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-11-23 21:35:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.8243243243243243) internal successors, (135), 74 states have internal predecessors, (135), 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) [2023-11-23 21:35:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 135 transitions. [2023-11-23 21:35:54,374 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 135 transitions. Word has length 18 [2023-11-23 21:35:54,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:54,374 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 135 transitions. [2023-11-23 21:35:54,375 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) [2023-11-23 21:35:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 135 transitions. [2023-11-23 21:35:54,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:35:54,376 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:54,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:54,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:35:54,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:54,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:54,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1998261550, now seen corresponding path program 1 times [2023-11-23 21:35:54,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:54,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096775469] [2023-11-23 21:35:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:54,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:54,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:54,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096775469] [2023-11-23 21:35:54,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096775469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:54,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:54,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:54,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376041871] [2023-11-23 21:35:54,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:54,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:54,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:54,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:54,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:54,502 INFO L87 Difference]: Start difference. First operand 75 states and 135 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) [2023-11-23 21:35:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:54,541 INFO L93 Difference]: Finished difference Result 144 states and 260 transitions. [2023-11-23 21:35:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:54,541 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 [2023-11-23 21:35:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:54,543 INFO L225 Difference]: With dead ends: 144 [2023-11-23 21:35:54,544 INFO L226 Difference]: Without dead ends: 142 [2023-11-23 21:35:54,544 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 [2023-11-23 21:35:54,550 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 50 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 134 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 [2023-11-23 21:35:54,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 134 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:54,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-23 21:35:54,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 100. [2023-11-23 21:35:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.8181818181818181) internal successors, (180), 99 states have internal predecessors, (180), 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) [2023-11-23 21:35:54,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 180 transitions. [2023-11-23 21:35:54,578 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 180 transitions. Word has length 18 [2023-11-23 21:35:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:54,578 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 180 transitions. [2023-11-23 21:35:54,578 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) [2023-11-23 21:35:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 180 transitions. [2023-11-23 21:35:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:35:54,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:54,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:54,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:35:54,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:54,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash 987144300, now seen corresponding path program 1 times [2023-11-23 21:35:54,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:54,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410272652] [2023-11-23 21:35:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:54,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:54,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410272652] [2023-11-23 21:35:54,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410272652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:54,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:54,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:54,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210501143] [2023-11-23 21:35:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:54,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:54,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:54,688 INFO L87 Difference]: Start difference. First operand 100 states and 180 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) [2023-11-23 21:35:54,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:54,720 INFO L93 Difference]: Finished difference Result 240 states and 434 transitions. [2023-11-23 21:35:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:54,721 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 [2023-11-23 21:35:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:54,725 INFO L225 Difference]: With dead ends: 240 [2023-11-23 21:35:54,725 INFO L226 Difference]: Without dead ends: 144 [2023-11-23 21:35:54,727 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 [2023-11-23 21:35:54,734 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 52 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 155 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 [2023-11-23 21:35:54,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 155 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:54,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-23 21:35:54,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2023-11-23 21:35:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.801418439716312) internal successors, (254), 141 states have internal predecessors, (254), 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) [2023-11-23 21:35:54,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 254 transitions. [2023-11-23 21:35:54,756 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 254 transitions. Word has length 18 [2023-11-23 21:35:54,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:54,756 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 254 transitions. [2023-11-23 21:35:54,757 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) [2023-11-23 21:35:54,757 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 254 transitions. [2023-11-23 21:35:54,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:35:54,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:54,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:54,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:35:54,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:54,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:54,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1816779271, now seen corresponding path program 1 times [2023-11-23 21:35:54,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:54,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061035462] [2023-11-23 21:35:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:54,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:54,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:54,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061035462] [2023-11-23 21:35:54,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061035462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:54,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:54,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:54,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021384299] [2023-11-23 21:35:54,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:54,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:54,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:54,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:54,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:54,805 INFO L87 Difference]: Start difference. First operand 142 states and 254 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) [2023-11-23 21:35:54,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:54,821 INFO L93 Difference]: Finished difference Result 215 states and 381 transitions. [2023-11-23 21:35:54,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:54,821 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 [2023-11-23 21:35:54,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:54,823 INFO L225 Difference]: With dead ends: 215 [2023-11-23 21:35:54,823 INFO L226 Difference]: Without dead ends: 146 [2023-11-23 21:35:54,824 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 [2023-11-23 21:35:54,825 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 54 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 169 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 [2023-11-23 21:35:54,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 169 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-23 21:35:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2023-11-23 21:35:54,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.7762237762237763) internal successors, (254), 143 states have internal predecessors, (254), 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) [2023-11-23 21:35:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 254 transitions. [2023-11-23 21:35:54,838 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 254 transitions. Word has length 19 [2023-11-23 21:35:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:54,838 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 254 transitions. [2023-11-23 21:35:54,839 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) [2023-11-23 21:35:54,839 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 254 transitions. [2023-11-23 21:35:54,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:35:54,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:54,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:54,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:35:54,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:54,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash 536915593, now seen corresponding path program 1 times [2023-11-23 21:35:54,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:54,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150823094] [2023-11-23 21:35:54,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:54,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:54,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:54,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150823094] [2023-11-23 21:35:54,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150823094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:54,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:54,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:54,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398203388] [2023-11-23 21:35:54,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:54,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:54,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:54,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:54,879 INFO L87 Difference]: Start difference. First operand 144 states and 254 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) [2023-11-23 21:35:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:54,898 INFO L93 Difference]: Finished difference Result 416 states and 736 transitions. [2023-11-23 21:35:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:54,898 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 [2023-11-23 21:35:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:54,900 INFO L225 Difference]: With dead ends: 416 [2023-11-23 21:35:54,901 INFO L226 Difference]: Without dead ends: 278 [2023-11-23 21:35:54,902 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 [2023-11-23 21:35:54,903 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 52 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 136 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 [2023-11-23 21:35:54,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 136 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-23 21:35:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 276. [2023-11-23 21:35:54,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.7527272727272727) internal successors, (482), 275 states have internal predecessors, (482), 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) [2023-11-23 21:35:54,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 482 transitions. [2023-11-23 21:35:54,923 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 482 transitions. Word has length 19 [2023-11-23 21:35:54,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:54,923 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 482 transitions. [2023-11-23 21:35:54,924 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) [2023-11-23 21:35:54,924 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 482 transitions. [2023-11-23 21:35:54,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:35:54,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:54,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:54,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:35:54,927 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:54,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:54,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1548032843, now seen corresponding path program 1 times [2023-11-23 21:35:54,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:54,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153846452] [2023-11-23 21:35:54,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:54,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:54,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:54,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153846452] [2023-11-23 21:35:54,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153846452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:54,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:54,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:54,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617073549] [2023-11-23 21:35:54,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:54,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:54,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:54,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:54,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:54,962 INFO L87 Difference]: Start difference. First operand 276 states and 482 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) [2023-11-23 21:35:54,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:54,980 INFO L93 Difference]: Finished difference Result 352 states and 620 transitions. [2023-11-23 21:35:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:54,981 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 [2023-11-23 21:35:54,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:54,984 INFO L225 Difference]: With dead ends: 352 [2023-11-23 21:35:54,984 INFO L226 Difference]: Without dead ends: 350 [2023-11-23 21:35:54,984 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 [2023-11-23 21:35:54,985 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 47 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 185 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 [2023-11-23 21:35:54,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-23 21:35:55,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 276. [2023-11-23 21:35:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.7381818181818183) internal successors, (478), 275 states have internal predecessors, (478), 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) [2023-11-23 21:35:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 478 transitions. [2023-11-23 21:35:55,014 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 478 transitions. Word has length 19 [2023-11-23 21:35:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:55,015 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 478 transitions. [2023-11-23 21:35:55,015 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) [2023-11-23 21:35:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 478 transitions. [2023-11-23 21:35:55,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:35:55,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:55,018 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] [2023-11-23 21:35:55,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:35:55,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:55,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:55,019 INFO L85 PathProgramCache]: Analyzing trace with hash -535272095, now seen corresponding path program 1 times [2023-11-23 21:35:55,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:55,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49221065] [2023-11-23 21:35:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:55,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:55,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49221065] [2023-11-23 21:35:55,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49221065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:55,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:55,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:55,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762978126] [2023-11-23 21:35:55,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:55,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:55,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:55,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:55,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:55,056 INFO L87 Difference]: Start difference. First operand 276 states and 478 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) [2023-11-23 21:35:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:55,077 INFO L93 Difference]: Finished difference Result 516 states and 904 transitions. [2023-11-23 21:35:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:55,078 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 [2023-11-23 21:35:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:55,081 INFO L225 Difference]: With dead ends: 516 [2023-11-23 21:35:55,082 INFO L226 Difference]: Without dead ends: 514 [2023-11-23 21:35:55,082 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 [2023-11-23 21:35:55,083 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 44 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 130 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 [2023-11-23 21:35:55,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 130 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:55,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-11-23 21:35:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 384. [2023-11-23 21:35:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.7075718015665797) internal successors, (654), 383 states have internal predecessors, (654), 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) [2023-11-23 21:35:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 654 transitions. [2023-11-23 21:35:55,102 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 654 transitions. Word has length 20 [2023-11-23 21:35:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:55,102 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 654 transitions. [2023-11-23 21:35:55,103 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) [2023-11-23 21:35:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 654 transitions. [2023-11-23 21:35:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:35:55,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:55,105 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] [2023-11-23 21:35:55,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:35:55,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:55,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1546389345, now seen corresponding path program 1 times [2023-11-23 21:35:55,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:55,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35514580] [2023-11-23 21:35:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:55,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:55,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:55,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35514580] [2023-11-23 21:35:55,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35514580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:55,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:55,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:55,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018885407] [2023-11-23 21:35:55,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:55,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:55,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:55,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:55,165 INFO L87 Difference]: Start difference. First operand 384 states and 654 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) [2023-11-23 21:35:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:55,202 INFO L93 Difference]: Finished difference Result 916 states and 1568 transitions. [2023-11-23 21:35:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:55,203 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 [2023-11-23 21:35:55,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:55,206 INFO L225 Difference]: With dead ends: 916 [2023-11-23 21:35:55,206 INFO L226 Difference]: Without dead ends: 538 [2023-11-23 21:35:55,208 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 [2023-11-23 21:35:55,209 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 50 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 157 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 [2023-11-23 21:35:55,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 157 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-11-23 21:35:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2023-11-23 21:35:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.6934579439252337) internal successors, (906), 535 states have internal predecessors, (906), 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) [2023-11-23 21:35:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 906 transitions. [2023-11-23 21:35:55,240 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 906 transitions. Word has length 20 [2023-11-23 21:35:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:55,240 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 906 transitions. [2023-11-23 21:35:55,241 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) [2023-11-23 21:35:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 906 transitions. [2023-11-23 21:35:55,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:35:55,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:55,242 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] [2023-11-23 21:35:55,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:35:55,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:55,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:55,244 INFO L85 PathProgramCache]: Analyzing trace with hash 586648286, now seen corresponding path program 1 times [2023-11-23 21:35:55,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:55,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693931367] [2023-11-23 21:35:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:55,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:55,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:55,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693931367] [2023-11-23 21:35:55,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693931367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:55,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:55,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:55,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768607786] [2023-11-23 21:35:55,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:55,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:55,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:55,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:55,306 INFO L87 Difference]: Start difference. First operand 536 states and 906 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) [2023-11-23 21:35:55,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:55,336 INFO L93 Difference]: Finished difference Result 812 states and 1368 transitions. [2023-11-23 21:35:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:55,337 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 [2023-11-23 21:35:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:55,341 INFO L225 Difference]: With dead ends: 812 [2023-11-23 21:35:55,341 INFO L226 Difference]: Without dead ends: 550 [2023-11-23 21:35:55,342 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 [2023-11-23 21:35:55,343 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 52 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 161 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 [2023-11-23 21:35:55,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 161 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-11-23 21:35:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 548. [2023-11-23 21:35:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 1.6709323583180986) internal successors, (914), 547 states have internal predecessors, (914), 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) [2023-11-23 21:35:55,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 914 transitions. [2023-11-23 21:35:55,369 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 914 transitions. Word has length 21 [2023-11-23 21:35:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:55,370 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 914 transitions. [2023-11-23 21:35:55,371 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) [2023-11-23 21:35:55,371 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 914 transitions. [2023-11-23 21:35:55,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:35:55,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:55,373 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] [2023-11-23 21:35:55,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:35:55,373 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:55,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:55,375 INFO L85 PathProgramCache]: Analyzing trace with hash -693215392, now seen corresponding path program 1 times [2023-11-23 21:35:55,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:55,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618756714] [2023-11-23 21:35:55,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:55,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:55,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:55,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:55,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618756714] [2023-11-23 21:35:55,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618756714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:55,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:55,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:55,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010353891] [2023-11-23 21:35:55,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:55,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:55,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:55,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:55,449 INFO L87 Difference]: Start difference. First operand 548 states and 914 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) [2023-11-23 21:35:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:55,489 INFO L93 Difference]: Finished difference Result 1000 states and 1692 transitions. [2023-11-23 21:35:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:55,490 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 [2023-11-23 21:35:55,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:55,497 INFO L225 Difference]: With dead ends: 1000 [2023-11-23 21:35:55,497 INFO L226 Difference]: Without dead ends: 998 [2023-11-23 21:35:55,499 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 [2023-11-23 21:35:55,500 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 41 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 128 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 [2023-11-23 21:35:55,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 128 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:55,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2023-11-23 21:35:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 772. [2023-11-23 21:35:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 1.6316472114137484) internal successors, (1258), 771 states have internal predecessors, (1258), 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) [2023-11-23 21:35:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1258 transitions. [2023-11-23 21:35:55,536 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1258 transitions. Word has length 21 [2023-11-23 21:35:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:55,536 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 1258 transitions. [2023-11-23 21:35:55,537 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) [2023-11-23 21:35:55,537 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1258 transitions. [2023-11-23 21:35:55,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:35:55,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:55,540 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] [2023-11-23 21:35:55,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:35:55,540 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:55,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1704332642, now seen corresponding path program 1 times [2023-11-23 21:35:55,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:55,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345420787] [2023-11-23 21:35:55,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:55,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:55,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:55,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345420787] [2023-11-23 21:35:55,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345420787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:55,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:55,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:55,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040923551] [2023-11-23 21:35:55,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:55,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:55,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:55,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:55,595 INFO L87 Difference]: Start difference. First operand 772 states and 1258 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) [2023-11-23 21:35:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:55,641 INFO L93 Difference]: Finished difference Result 1816 states and 2972 transitions. [2023-11-23 21:35:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:55,642 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 [2023-11-23 21:35:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:55,648 INFO L225 Difference]: With dead ends: 1816 [2023-11-23 21:35:55,648 INFO L226 Difference]: Without dead ends: 1062 [2023-11-23 21:35:55,650 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 [2023-11-23 21:35:55,651 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 49 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 158 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 [2023-11-23 21:35:55,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 158 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2023-11-23 21:35:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1060. [2023-11-23 21:35:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 1.6185080264400378) internal successors, (1714), 1059 states have internal predecessors, (1714), 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) [2023-11-23 21:35:55,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1714 transitions. [2023-11-23 21:35:55,698 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1714 transitions. Word has length 21 [2023-11-23 21:35:55,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:55,698 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1714 transitions. [2023-11-23 21:35:55,698 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) [2023-11-23 21:35:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1714 transitions. [2023-11-23 21:35:55,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:35:55,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:55,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:55,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:35:55,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:55,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash -14626284, now seen corresponding path program 1 times [2023-11-23 21:35:55,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:55,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162085910] [2023-11-23 21:35:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:55,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:55,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162085910] [2023-11-23 21:35:55,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162085910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:55,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:55,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:55,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177383872] [2023-11-23 21:35:55,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:55,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:55,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:55,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:55,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:55,746 INFO L87 Difference]: Start difference. First operand 1060 states and 1714 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-23 21:35:55,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:55,787 INFO L93 Difference]: Finished difference Result 1592 states and 2564 transitions. [2023-11-23 21:35:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:55,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-23 21:35:55,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:55,794 INFO L225 Difference]: With dead ends: 1592 [2023-11-23 21:35:55,794 INFO L226 Difference]: Without dead ends: 1078 [2023-11-23 21:35:55,795 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 [2023-11-23 21:35:55,796 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 51 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 157 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 [2023-11-23 21:35:55,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 157 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:55,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2023-11-23 21:35:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 1076. [2023-11-23 21:35:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 1.5944186046511628) internal successors, (1714), 1075 states have internal predecessors, (1714), 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) [2023-11-23 21:35:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1714 transitions. [2023-11-23 21:35:55,855 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1714 transitions. Word has length 22 [2023-11-23 21:35:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:55,856 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1714 transitions. [2023-11-23 21:35:55,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-23 21:35:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1714 transitions. [2023-11-23 21:35:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:35:55,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:55,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:55,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:35:55,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:55,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1294489962, now seen corresponding path program 1 times [2023-11-23 21:35:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:55,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910820312] [2023-11-23 21:35:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:55,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:55,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910820312] [2023-11-23 21:35:55,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910820312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:55,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:55,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:55,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562602703] [2023-11-23 21:35:55,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:55,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:55,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:55,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:55,892 INFO L87 Difference]: Start difference. First operand 1076 states and 1714 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-23 21:35:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:55,946 INFO L93 Difference]: Finished difference Result 1928 states and 3124 transitions. [2023-11-23 21:35:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:55,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-23 21:35:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:55,959 INFO L225 Difference]: With dead ends: 1928 [2023-11-23 21:35:55,959 INFO L226 Difference]: Without dead ends: 1926 [2023-11-23 21:35:55,961 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 [2023-11-23 21:35:55,963 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 38 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 126 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 [2023-11-23 21:35:55,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 126 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:55,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2023-11-23 21:35:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1540. [2023-11-23 21:35:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1539 states have (on average 1.5503573749187785) internal successors, (2386), 1539 states have internal predecessors, (2386), 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) [2023-11-23 21:35:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2386 transitions. [2023-11-23 21:35:56,030 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2386 transitions. Word has length 22 [2023-11-23 21:35:56,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:56,031 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2386 transitions. [2023-11-23 21:35:56,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-23 21:35:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2386 transitions. [2023-11-23 21:35:56,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:35:56,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:56,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:56,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:35:56,034 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:56,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:56,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1989360084, now seen corresponding path program 1 times [2023-11-23 21:35:56,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:56,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117814004] [2023-11-23 21:35:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:56,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:56,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:56,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:56,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117814004] [2023-11-23 21:35:56,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117814004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:56,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:56,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:56,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865570543] [2023-11-23 21:35:56,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:56,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:56,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:56,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:56,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:56,072 INFO L87 Difference]: Start difference. First operand 1540 states and 2386 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-23 21:35:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:56,142 INFO L93 Difference]: Finished difference Result 3592 states and 5588 transitions. [2023-11-23 21:35:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:56,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-23 21:35:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:56,154 INFO L225 Difference]: With dead ends: 3592 [2023-11-23 21:35:56,154 INFO L226 Difference]: Without dead ends: 2086 [2023-11-23 21:35:56,158 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 [2023-11-23 21:35:56,159 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 48 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 159 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 [2023-11-23 21:35:56,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 159 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:56,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2023-11-23 21:35:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2084. [2023-11-23 21:35:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.5372059529524724) internal successors, (3202), 2083 states have internal predecessors, (3202), 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) [2023-11-23 21:35:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 3202 transitions. [2023-11-23 21:35:56,253 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 3202 transitions. Word has length 22 [2023-11-23 21:35:56,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:56,253 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 3202 transitions. [2023-11-23 21:35:56,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2023-11-23 21:35:56,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 3202 transitions. [2023-11-23 21:35:56,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:35:56,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:56,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:56,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:35:56,257 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:56,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1474268429, now seen corresponding path program 1 times [2023-11-23 21:35:56,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:56,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517864961] [2023-11-23 21:35:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:56,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:56,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:56,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517864961] [2023-11-23 21:35:56,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517864961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:56,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:56,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:56,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44409780] [2023-11-23 21:35:56,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:56,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:56,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:56,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:56,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:56,295 INFO L87 Difference]: Start difference. First operand 2084 states and 3202 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-23 21:35:56,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:56,372 INFO L93 Difference]: Finished difference Result 3128 states and 4788 transitions. [2023-11-23 21:35:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:56,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-11-23 21:35:56,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:56,384 INFO L225 Difference]: With dead ends: 3128 [2023-11-23 21:35:56,384 INFO L226 Difference]: Without dead ends: 2118 [2023-11-23 21:35:56,385 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 [2023-11-23 21:35:56,386 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 50 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 153 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 [2023-11-23 21:35:56,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 153 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:56,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2023-11-23 21:35:56,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 2116. [2023-11-23 21:35:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2115 states have (on average 1.5139479905437352) internal successors, (3202), 2115 states have internal predecessors, (3202), 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) [2023-11-23 21:35:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 3202 transitions. [2023-11-23 21:35:56,480 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 3202 transitions. Word has length 23 [2023-11-23 21:35:56,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:56,480 INFO L495 AbstractCegarLoop]: Abstraction has 2116 states and 3202 transitions. [2023-11-23 21:35:56,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-23 21:35:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 3202 transitions. [2023-11-23 21:35:56,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:35:56,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:56,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:56,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:35:56,484 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:56,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:56,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1540835189, now seen corresponding path program 1 times [2023-11-23 21:35:56,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:56,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469741978] [2023-11-23 21:35:56,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:56,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:56,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:56,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469741978] [2023-11-23 21:35:56,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469741978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:56,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:56,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511998692] [2023-11-23 21:35:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:56,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:56,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:56,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:56,519 INFO L87 Difference]: Start difference. First operand 2116 states and 3202 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-23 21:35:56,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:56,612 INFO L93 Difference]: Finished difference Result 3720 states and 5732 transitions. [2023-11-23 21:35:56,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:56,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-11-23 21:35:56,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:56,633 INFO L225 Difference]: With dead ends: 3720 [2023-11-23 21:35:56,633 INFO L226 Difference]: Without dead ends: 3718 [2023-11-23 21:35:56,634 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 [2023-11-23 21:35:56,636 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 124 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 [2023-11-23 21:35:56,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 124 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:56,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2023-11-23 21:35:56,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3076. [2023-11-23 21:35:56,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.4679674796747968) internal successors, (4514), 3075 states have internal predecessors, (4514), 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) [2023-11-23 21:35:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 4514 transitions. [2023-11-23 21:35:56,763 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 4514 transitions. Word has length 23 [2023-11-23 21:35:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:56,763 INFO L495 AbstractCegarLoop]: Abstraction has 3076 states and 4514 transitions. [2023-11-23 21:35:56,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-23 21:35:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 4514 transitions. [2023-11-23 21:35:56,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:35:56,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:56,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:56,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 21:35:56,768 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:56,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash 529717939, now seen corresponding path program 1 times [2023-11-23 21:35:56,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593606714] [2023-11-23 21:35:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:56,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:56,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593606714] [2023-11-23 21:35:56,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593606714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:56,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:56,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:56,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454829256] [2023-11-23 21:35:56,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:56,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:56,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:56,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:56,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:56,800 INFO L87 Difference]: Start difference. First operand 3076 states and 4514 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-23 21:35:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:56,985 INFO L93 Difference]: Finished difference Result 7112 states and 10468 transitions. [2023-11-23 21:35:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-11-23 21:35:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:57,008 INFO L225 Difference]: With dead ends: 7112 [2023-11-23 21:35:57,008 INFO L226 Difference]: Without dead ends: 4102 [2023-11-23 21:35:57,012 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 [2023-11-23 21:35:57,013 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 47 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 160 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 [2023-11-23 21:35:57,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 160 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2023-11-23 21:35:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4100. [2023-11-23 21:35:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4099 states have (on average 1.4525494022932424) internal successors, (5954), 4099 states have internal predecessors, (5954), 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) [2023-11-23 21:35:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 5954 transitions. [2023-11-23 21:35:57,197 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 5954 transitions. Word has length 23 [2023-11-23 21:35:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:57,197 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 5954 transitions. [2023-11-23 21:35:57,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-23 21:35:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 5954 transitions. [2023-11-23 21:35:57,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:35:57,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:57,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:57,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 21:35:57,202 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:57,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash 521465673, now seen corresponding path program 1 times [2023-11-23 21:35:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:57,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595955426] [2023-11-23 21:35:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:57,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:57,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595955426] [2023-11-23 21:35:57,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595955426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:57,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:57,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038275600] [2023-11-23 21:35:57,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:57,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:57,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:57,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:57,242 INFO L87 Difference]: Start difference. First operand 4100 states and 5954 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:35:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:57,351 INFO L93 Difference]: Finished difference Result 6152 states and 8900 transitions. [2023-11-23 21:35:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:57,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-23 21:35:57,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:57,394 INFO L225 Difference]: With dead ends: 6152 [2023-11-23 21:35:57,394 INFO L226 Difference]: Without dead ends: 4166 [2023-11-23 21:35:57,397 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 [2023-11-23 21:35:57,398 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 149 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 [2023-11-23 21:35:57,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 149 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2023-11-23 21:35:57,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 4164. [2023-11-23 21:35:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 4163 states have (on average 1.430218592361278) internal successors, (5954), 4163 states have internal predecessors, (5954), 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) [2023-11-23 21:35:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 5954 transitions. [2023-11-23 21:35:57,594 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 5954 transitions. Word has length 24 [2023-11-23 21:35:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:57,594 INFO L495 AbstractCegarLoop]: Abstraction has 4164 states and 5954 transitions. [2023-11-23 21:35:57,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:35:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 5954 transitions. [2023-11-23 21:35:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:35:57,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:57,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 21:35:57,602 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:57,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash -758398005, now seen corresponding path program 1 times [2023-11-23 21:35:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:57,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956898278] [2023-11-23 21:35:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:57,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:57,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956898278] [2023-11-23 21:35:57,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956898278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:57,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:57,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:57,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619639883] [2023-11-23 21:35:57,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:57,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:57,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:57,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:57,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:57,651 INFO L87 Difference]: Start difference. First operand 4164 states and 5954 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:35:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:57,818 INFO L93 Difference]: Finished difference Result 7176 states and 10436 transitions. [2023-11-23 21:35:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-23 21:35:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:57,834 INFO L225 Difference]: With dead ends: 7176 [2023-11-23 21:35:57,835 INFO L226 Difference]: Without dead ends: 7174 [2023-11-23 21:35:57,837 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 [2023-11-23 21:35:57,838 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 32 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 122 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 [2023-11-23 21:35:57,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 122 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:57,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7174 states. [2023-11-23 21:35:58,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7174 to 6148. [2023-11-23 21:35:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 6147 states have (on average 1.3850658857979503) internal successors, (8514), 6147 states have internal predecessors, (8514), 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) [2023-11-23 21:35:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 8514 transitions. [2023-11-23 21:35:58,089 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 8514 transitions. Word has length 24 [2023-11-23 21:35:58,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:58,089 INFO L495 AbstractCegarLoop]: Abstraction has 6148 states and 8514 transitions. [2023-11-23 21:35:58,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:35:58,090 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 8514 transitions. [2023-11-23 21:35:58,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:35:58,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:58,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:58,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 21:35:58,099 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:58,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:58,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1769515255, now seen corresponding path program 1 times [2023-11-23 21:35:58,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:58,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093368002] [2023-11-23 21:35:58,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:58,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:58,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:58,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093368002] [2023-11-23 21:35:58,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093368002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:58,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:58,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:58,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458245226] [2023-11-23 21:35:58,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:58,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:58,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:58,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:58,127 INFO L87 Difference]: Start difference. First operand 6148 states and 8514 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:35:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:58,352 INFO L93 Difference]: Finished difference Result 14088 states and 19524 transitions. [2023-11-23 21:35:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:58,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2023-11-23 21:35:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:58,367 INFO L225 Difference]: With dead ends: 14088 [2023-11-23 21:35:58,367 INFO L226 Difference]: Without dead ends: 8070 [2023-11-23 21:35:58,374 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 [2023-11-23 21:35:58,374 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 46 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 161 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 [2023-11-23 21:35:58,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 161 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:58,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8070 states. [2023-11-23 21:35:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8070 to 8068. [2023-11-23 21:35:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8068 states, 8067 states have (on average 1.36481963555225) internal successors, (11010), 8067 states have internal predecessors, (11010), 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) [2023-11-23 21:35:58,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8068 states to 8068 states and 11010 transitions. [2023-11-23 21:35:58,724 INFO L78 Accepts]: Start accepts. Automaton has 8068 states and 11010 transitions. Word has length 24 [2023-11-23 21:35:58,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:58,724 INFO L495 AbstractCegarLoop]: Abstraction has 8068 states and 11010 transitions. [2023-11-23 21:35:58,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:35:58,724 INFO L276 IsEmpty]: Start isEmpty. Operand 8068 states and 11010 transitions. [2023-11-23 21:35:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 21:35:58,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:58,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:58,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 21:35:58,736 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:58,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2035286264, now seen corresponding path program 1 times [2023-11-23 21:35:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:58,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951420628] [2023-11-23 21:35:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:58,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:58,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951420628] [2023-11-23 21:35:58,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951420628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:58,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:58,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:58,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097519353] [2023-11-23 21:35:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:58,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:58,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:58,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:58,764 INFO L87 Difference]: Start difference. First operand 8068 states and 11010 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 21:35:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:58,988 INFO L93 Difference]: Finished difference Result 12104 states and 16452 transitions. [2023-11-23 21:35:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:58,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-11-23 21:35:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:59,004 INFO L225 Difference]: With dead ends: 12104 [2023-11-23 21:35:59,005 INFO L226 Difference]: Without dead ends: 8198 [2023-11-23 21:35:59,011 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 [2023-11-23 21:35:59,011 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 48 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 145 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 [2023-11-23 21:35:59,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 145 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:59,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8198 states. [2023-11-23 21:35:59,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8198 to 8196. [2023-11-23 21:35:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8196 states, 8195 states have (on average 1.3435021354484442) internal successors, (11010), 8195 states have internal predecessors, (11010), 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) [2023-11-23 21:35:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8196 states to 8196 states and 11010 transitions. [2023-11-23 21:35:59,350 INFO L78 Accepts]: Start accepts. Automaton has 8196 states and 11010 transitions. Word has length 25 [2023-11-23 21:35:59,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:35:59,350 INFO L495 AbstractCegarLoop]: Abstraction has 8196 states and 11010 transitions. [2023-11-23 21:35:59,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 21:35:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 8196 states and 11010 transitions. [2023-11-23 21:35:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 21:35:59,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:35:59,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:35:59,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 21:35:59,361 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:35:59,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:59,361 INFO L85 PathProgramCache]: Analyzing trace with hash 979817354, now seen corresponding path program 1 times [2023-11-23 21:35:59,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:59,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537383025] [2023-11-23 21:35:59,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:59,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:59,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:59,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:59,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537383025] [2023-11-23 21:35:59,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537383025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:59,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:59,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723845415] [2023-11-23 21:35:59,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:59,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:59,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:59,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:59,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:59,388 INFO L87 Difference]: Start difference. First operand 8196 states and 11010 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 21:35:59,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:35:59,697 INFO L93 Difference]: Finished difference Result 13832 states and 18820 transitions. [2023-11-23 21:35:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:59,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-11-23 21:35:59,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:35:59,723 INFO L225 Difference]: With dead ends: 13832 [2023-11-23 21:35:59,724 INFO L226 Difference]: Without dead ends: 13830 [2023-11-23 21:35:59,727 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 [2023-11-23 21:35:59,730 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 120 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 [2023-11-23 21:35:59,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 120 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:35:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13830 states. [2023-11-23 21:36:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13830 to 12292. [2023-11-23 21:36:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12292 states, 12291 states have (on average 1.3019282401757384) internal successors, (16002), 12291 states have internal predecessors, (16002), 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) [2023-11-23 21:36:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12292 states to 12292 states and 16002 transitions. [2023-11-23 21:36:00,137 INFO L78 Accepts]: Start accepts. Automaton has 12292 states and 16002 transitions. Word has length 25 [2023-11-23 21:36:00,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:00,137 INFO L495 AbstractCegarLoop]: Abstraction has 12292 states and 16002 transitions. [2023-11-23 21:36:00,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 21:36:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 12292 states and 16002 transitions. [2023-11-23 21:36:00,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 21:36:00,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:00,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:00,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 21:36:00,155 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:00,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:00,155 INFO L85 PathProgramCache]: Analyzing trace with hash -31299896, now seen corresponding path program 1 times [2023-11-23 21:36:00,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:00,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882218979] [2023-11-23 21:36:00,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:00,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:00,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:00,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882218979] [2023-11-23 21:36:00,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882218979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:00,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:00,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:00,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157514265] [2023-11-23 21:36:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:00,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:36:00,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:36:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:36:00,189 INFO L87 Difference]: Start difference. First operand 12292 states and 16002 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 21:36:00,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:00,659 INFO L93 Difference]: Finished difference Result 27912 states and 36228 transitions. [2023-11-23 21:36:00,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:36:00,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-11-23 21:36:00,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:00,691 INFO L225 Difference]: With dead ends: 27912 [2023-11-23 21:36:00,692 INFO L226 Difference]: Without dead ends: 15878 [2023-11-23 21:36:00,707 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 [2023-11-23 21:36:00,708 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 45 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 162 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 [2023-11-23 21:36:00,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 162 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:36:00,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15878 states. [2023-11-23 21:36:01,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15878 to 15876. [2023-11-23 21:36:01,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15876 states, 15875 states have (on average 1.2740787401574802) internal successors, (20226), 15875 states have internal predecessors, (20226), 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) [2023-11-23 21:36:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15876 states to 15876 states and 20226 transitions. [2023-11-23 21:36:01,438 INFO L78 Accepts]: Start accepts. Automaton has 15876 states and 20226 transitions. Word has length 25 [2023-11-23 21:36:01,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:01,439 INFO L495 AbstractCegarLoop]: Abstraction has 15876 states and 20226 transitions. [2023-11-23 21:36:01,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 21:36:01,439 INFO L276 IsEmpty]: Start isEmpty. Operand 15876 states and 20226 transitions. [2023-11-23 21:36:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:36:01,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:01,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:01,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 21:36:01,458 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:01,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash 309782654, now seen corresponding path program 1 times [2023-11-23 21:36:01,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:01,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876448702] [2023-11-23 21:36:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:01,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:01,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:01,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876448702] [2023-11-23 21:36:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876448702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:01,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:01,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:01,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953609394] [2023-11-23 21:36:01,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:01,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:36:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:36:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:36:01,504 INFO L87 Difference]: Start difference. First operand 15876 states and 20226 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:36:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:01,912 INFO L93 Difference]: Finished difference Result 23816 states and 30212 transitions. [2023-11-23 21:36:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:36:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-11-23 21:36:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:01,941 INFO L225 Difference]: With dead ends: 23816 [2023-11-23 21:36:01,941 INFO L226 Difference]: Without dead ends: 16134 [2023-11-23 21:36:01,949 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 [2023-11-23 21:36:01,951 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 47 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 141 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 [2023-11-23 21:36:01,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 141 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:36:01,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16134 states. [2023-11-23 21:36:02,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16134 to 16132. [2023-11-23 21:36:02,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16132 states, 16131 states have (on average 1.2538590291984377) internal successors, (20226), 16131 states have internal predecessors, (20226), 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) [2023-11-23 21:36:02,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16132 states to 16132 states and 20226 transitions. [2023-11-23 21:36:02,467 INFO L78 Accepts]: Start accepts. Automaton has 16132 states and 20226 transitions. Word has length 26 [2023-11-23 21:36:02,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:02,467 INFO L495 AbstractCegarLoop]: Abstraction has 16132 states and 20226 transitions. [2023-11-23 21:36:02,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:36:02,468 INFO L276 IsEmpty]: Start isEmpty. Operand 16132 states and 20226 transitions. [2023-11-23 21:36:02,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:36:02,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:02,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:02,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-23 21:36:02,486 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:02,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:02,487 INFO L85 PathProgramCache]: Analyzing trace with hash -970081024, now seen corresponding path program 1 times [2023-11-23 21:36:02,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570646093] [2023-11-23 21:36:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:02,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:02,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:02,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570646093] [2023-11-23 21:36:02,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570646093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:02,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:02,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:02,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817078532] [2023-11-23 21:36:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:02,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:36:02,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:02,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:36:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:36:02,511 INFO L87 Difference]: Start difference. First operand 16132 states and 20226 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:36:03,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:03,273 INFO L93 Difference]: Finished difference Result 26632 states and 33540 transitions. [2023-11-23 21:36:03,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:36:03,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-11-23 21:36:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:03,326 INFO L225 Difference]: With dead ends: 26632 [2023-11-23 21:36:03,326 INFO L226 Difference]: Without dead ends: 26630 [2023-11-23 21:36:03,332 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 [2023-11-23 21:36:03,333 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 26 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 118 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 [2023-11-23 21:36:03,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 118 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:36:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26630 states. [2023-11-23 21:36:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26630 to 24580. [2023-11-23 21:36:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24580 states, 24579 states have (on average 1.2186826152406527) internal successors, (29954), 24579 states have internal predecessors, (29954), 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) [2023-11-23 21:36:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24580 states to 24580 states and 29954 transitions. [2023-11-23 21:36:04,094 INFO L78 Accepts]: Start accepts. Automaton has 24580 states and 29954 transitions. Word has length 26 [2023-11-23 21:36:04,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:04,094 INFO L495 AbstractCegarLoop]: Abstraction has 24580 states and 29954 transitions. [2023-11-23 21:36:04,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:36:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 24580 states and 29954 transitions. [2023-11-23 21:36:04,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:36:04,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:04,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:04,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 21:36:04,134 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:04,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1981198274, now seen corresponding path program 1 times [2023-11-23 21:36:04,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:04,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450922651] [2023-11-23 21:36:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:04,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:04,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:04,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450922651] [2023-11-23 21:36:04,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450922651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:04,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:04,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:04,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388061904] [2023-11-23 21:36:04,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:04,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:36:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:04,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:36:04,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:36:04,169 INFO L87 Difference]: Start difference. First operand 24580 states and 29954 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:36:04,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:04,974 INFO L93 Difference]: Finished difference Result 55304 states and 66820 transitions. [2023-11-23 21:36:04,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:36:04,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-11-23 21:36:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:05,030 INFO L225 Difference]: With dead ends: 55304 [2023-11-23 21:36:05,030 INFO L226 Difference]: Without dead ends: 31238 [2023-11-23 21:36:05,054 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 [2023-11-23 21:36:05,055 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 44 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 163 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 [2023-11-23 21:36:05,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 163 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:36:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31238 states. [2023-11-23 21:36:05,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31238 to 31236. [2023-11-23 21:36:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31236 states, 31235 states have (on average 1.180278533696174) internal successors, (36866), 31235 states have internal predecessors, (36866), 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) [2023-11-23 21:36:06,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31236 states to 31236 states and 36866 transitions. [2023-11-23 21:36:06,085 INFO L78 Accepts]: Start accepts. Automaton has 31236 states and 36866 transitions. Word has length 26 [2023-11-23 21:36:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:06,085 INFO L495 AbstractCegarLoop]: Abstraction has 31236 states and 36866 transitions. [2023-11-23 21:36:06,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:36:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 31236 states and 36866 transitions. [2023-11-23 21:36:06,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:36:06,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:06,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:06,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-23 21:36:06,116 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:06,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash -7524579, now seen corresponding path program 1 times [2023-11-23 21:36:06,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:06,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373677032] [2023-11-23 21:36:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:06,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:06,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:06,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:06,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373677032] [2023-11-23 21:36:06,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373677032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:06,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:06,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:06,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327589625] [2023-11-23 21:36:06,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:06,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:36:06,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:06,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:36:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:36:06,163 INFO L87 Difference]: Start difference. First operand 31236 states and 36866 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:36:06,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:06,920 INFO L93 Difference]: Finished difference Result 46856 states and 55044 transitions. [2023-11-23 21:36:06,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:36:06,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2023-11-23 21:36:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:06,965 INFO L225 Difference]: With dead ends: 46856 [2023-11-23 21:36:06,965 INFO L226 Difference]: Without dead ends: 31750 [2023-11-23 21:36:06,977 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 [2023-11-23 21:36:06,977 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 46 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 137 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 [2023-11-23 21:36:06,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 137 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:36:06,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31750 states. [2023-11-23 21:36:07,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31750 to 31748. [2023-11-23 21:36:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31748 states, 31747 states have (on average 1.1612435820707467) internal successors, (36866), 31747 states have internal predecessors, (36866), 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) [2023-11-23 21:36:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31748 states to 31748 states and 36866 transitions. [2023-11-23 21:36:07,843 INFO L78 Accepts]: Start accepts. Automaton has 31748 states and 36866 transitions. Word has length 27 [2023-11-23 21:36:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:07,844 INFO L495 AbstractCegarLoop]: Abstraction has 31748 states and 36866 transitions. [2023-11-23 21:36:07,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:36:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 31748 states and 36866 transitions. [2023-11-23 21:36:07,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:36:07,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:07,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:07,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-23 21:36:07,865 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:07,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:07,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1287388257, now seen corresponding path program 1 times [2023-11-23 21:36:07,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:07,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755099658] [2023-11-23 21:36:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:07,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:07,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:07,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:07,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755099658] [2023-11-23 21:36:07,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755099658] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:07,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:07,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:07,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265244447] [2023-11-23 21:36:07,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:07,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:36:07,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:07,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:36:07,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:36:07,897 INFO L87 Difference]: Start difference. First operand 31748 states and 36866 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:36:09,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:09,173 INFO L93 Difference]: Finished difference Result 92166 states and 104451 transitions. [2023-11-23 21:36:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:36:09,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2023-11-23 21:36:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:09,229 INFO L225 Difference]: With dead ends: 92166 [2023-11-23 21:36:09,229 INFO L226 Difference]: Without dead ends: 31748 [2023-11-23 21:36:09,254 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 [2023-11-23 21:36:09,255 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 43 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 135 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 [2023-11-23 21:36:09,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 135 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:36:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31748 states. [2023-11-23 21:36:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31748 to 31748. [2023-11-23 21:36:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31748 states, 31747 states have (on average 1.0967335496267363) internal successors, (34818), 31747 states have internal predecessors, (34818), 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) [2023-11-23 21:36:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31748 states to 31748 states and 34818 transitions. [2023-11-23 21:36:10,062 INFO L78 Accepts]: Start accepts. Automaton has 31748 states and 34818 transitions. Word has length 27 [2023-11-23 21:36:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:10,063 INFO L495 AbstractCegarLoop]: Abstraction has 31748 states and 34818 transitions. [2023-11-23 21:36:10,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:36:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 31748 states and 34818 transitions. [2023-11-23 21:36:10,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:36:10,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:36:10,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:10,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-23 21:36:10,081 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:36:10,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:36:10,082 INFO L85 PathProgramCache]: Analyzing trace with hash -276271007, now seen corresponding path program 1 times [2023-11-23 21:36:10,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:36:10,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126163669] [2023-11-23 21:36:10,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:36:10,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:36:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:36:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:36:10,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:36:10,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126163669] [2023-11-23 21:36:10,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126163669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:36:10,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:36:10,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:36:10,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871619475] [2023-11-23 21:36:10,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:36:10,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:36:10,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:36:10,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:36:10,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:36:10,106 INFO L87 Difference]: Start difference. First operand 31748 states and 34818 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:36:10,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:36:10,616 INFO L93 Difference]: Finished difference Result 31748 states and 34818 transitions. [2023-11-23 21:36:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:36:10,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2023-11-23 21:36:10,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:36:10,616 INFO L225 Difference]: With dead ends: 31748 [2023-11-23 21:36:10,617 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:36:10,630 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 [2023-11-23 21:36:10,631 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:36:10,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 75 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:36:10,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:36:10,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:36:10,632 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) [2023-11-23 21:36:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:36:10,632 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-11-23 21:36:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:36:10,632 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:36:10,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:36:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:36:10,633 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:36:10,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:36:10,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-23 21:36:10,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:36:10,651 INFO L899 garLoopResultBuilder]: For program point L159-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,651 INFO L899 garLoopResultBuilder]: For program point L93-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,651 INFO L899 garLoopResultBuilder]: For program point L85-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,651 INFO L899 garLoopResultBuilder]: For program point L77-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,651 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 6 179) no Hoare annotation was computed. [2023-11-23 21:36:10,652 INFO L899 garLoopResultBuilder]: For program point L135(line 135) no Hoare annotation was computed. [2023-11-23 21:36:10,652 INFO L899 garLoopResultBuilder]: For program point L160(line 160) no Hoare annotation was computed. [2023-11-23 21:36:10,652 INFO L899 garLoopResultBuilder]: For program point L119-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,652 INFO L899 garLoopResultBuilder]: For program point L144-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,652 INFO L902 garLoopResultBuilder]: At program point L169-1(lines 44 174) the Hoare annotation is: true [2023-11-23 21:36:10,653 INFO L899 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2023-11-23 21:36:10,653 INFO L899 garLoopResultBuilder]: For program point L145(line 145) no Hoare annotation was computed. [2023-11-23 21:36:10,653 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 48) no Hoare annotation was computed. [2023-11-23 21:36:10,653 INFO L899 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2023-11-23 21:36:10,653 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:36:10,653 INFO L899 garLoopResultBuilder]: For program point L129-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,653 INFO L899 garLoopResultBuilder]: For program point L154-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,654 INFO L899 garLoopResultBuilder]: For program point L113-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,654 INFO L899 garLoopResultBuilder]: For program point L105-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,654 INFO L899 garLoopResultBuilder]: For program point L130(line 130) no Hoare annotation was computed. [2023-11-23 21:36:10,654 INFO L899 garLoopResultBuilder]: For program point L97-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,654 INFO L899 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2023-11-23 21:36:10,654 INFO L899 garLoopResultBuilder]: For program point L89-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,654 INFO L899 garLoopResultBuilder]: For program point L81-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,655 INFO L899 garLoopResultBuilder]: For program point L139-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,655 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 75) no Hoare annotation was computed. [2023-11-23 21:36:10,655 INFO L899 garLoopResultBuilder]: For program point L73-2(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,655 INFO L899 garLoopResultBuilder]: For program point L164-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,655 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2023-11-23 21:36:10,655 INFO L899 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2023-11-23 21:36:10,656 INFO L899 garLoopResultBuilder]: For program point L165(line 165) no Hoare annotation was computed. [2023-11-23 21:36:10,656 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:36:10,656 INFO L899 garLoopResultBuilder]: For program point L124-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,656 INFO L899 garLoopResultBuilder]: For program point L149-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,656 INFO L899 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2023-11-23 21:36:10,656 INFO L899 garLoopResultBuilder]: For program point main_ERROR#1(lines 7 179) no Hoare annotation was computed. [2023-11-23 21:36:10,656 INFO L899 garLoopResultBuilder]: For program point L150(line 150) no Hoare annotation was computed. [2023-11-23 21:36:10,657 INFO L899 garLoopResultBuilder]: For program point L175(lines 7 179) no Hoare annotation was computed. [2023-11-23 21:36:10,657 INFO L899 garLoopResultBuilder]: For program point L109-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,657 INFO L899 garLoopResultBuilder]: For program point L134-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,657 INFO L899 garLoopResultBuilder]: For program point L101-1(lines 44 174) no Hoare annotation was computed. [2023-11-23 21:36:10,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:36:10,662 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:36:10,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:36:10 BoogieIcfgContainer [2023-11-23 21:36:10,671 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:36:10,672 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:36:10,672 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:36:10,672 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:36:10,672 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:53" (3/4) ... [2023-11-23 21:36:10,674 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:36:10,687 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-23 21:36:10,688 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 21:36:10,688 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:36:10,688 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:36:10,809 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:36:10,809 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 21:36:10,810 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:36:10,811 INFO L158 Benchmark]: Toolchain (without parser) took 18547.06ms. Allocated memory was 146.8MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 101.9MB in the beginning and 5.7GB in the end (delta: -5.6GB). Peak memory consumption was 573.9MB. Max. memory is 16.1GB. [2023-11-23 21:36:10,811 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:36:10,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.59ms. Allocated memory is still 146.8MB. Free memory was 101.9MB in the beginning and 90.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:36:10,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.25ms. Allocated memory is still 146.8MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:36:10,816 INFO L158 Benchmark]: Boogie Preprocessor took 77.84ms. Allocated memory is still 146.8MB. Free memory was 88.3MB in the beginning and 86.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:36:10,816 INFO L158 Benchmark]: RCFGBuilder took 534.73ms. Allocated memory is still 146.8MB. Free memory was 86.2MB in the beginning and 71.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:36:10,821 INFO L158 Benchmark]: TraceAbstraction took 17311.11ms. Allocated memory was 146.8MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 70.5MB in the beginning and 5.7GB in the end (delta: -5.7GB). Peak memory consumption was 538.3MB. Max. memory is 16.1GB. [2023-11-23 21:36:10,823 INFO L158 Benchmark]: Witness Printer took 138.07ms. Allocated memory is still 6.3GB. Free memory was 5.7GB in the beginning and 5.7GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:36:10,824 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 146.8MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.59ms. Allocated memory is still 146.8MB. Free memory was 101.9MB in the beginning and 90.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.25ms. Allocated memory is still 146.8MB. Free memory was 90.4MB in the beginning and 88.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.84ms. Allocated memory is still 146.8MB. Free memory was 88.3MB in the beginning and 86.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.73ms. Allocated memory is still 146.8MB. Free memory was 86.2MB in the beginning and 71.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 17311.11ms. Allocated memory was 146.8MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 70.5MB in the beginning and 5.7GB in the end (delta: -5.7GB). Peak memory consumption was 538.3MB. Max. memory is 16.1GB. * Witness Printer took 138.07ms. Allocated memory is still 6.3GB. Free memory was 5.7GB in the beginning and 5.7GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 177]: 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, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.2s, OverallIterations: 31, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1398 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1398 mSDsluCounter, 4489 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1802 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 2687 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31748occurred in iteration=29, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 31 MinimizatonAttempts, 6176 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2050 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 689 NumberOfCodeBlocks, 689 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 658 ConstructedInterpolants, 0 QuantifiedInterpolants, 1461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 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: 44]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-23 21:36:10,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6320fa35-9e7d-46e3-82eb-0a47470396bb/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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