./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl --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 6d5cb8d9caea7ccafc5dde86756b709e1bbbadc4ec66724ae09094031008d598 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:31:54,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:31:55,008 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:31:55,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:31:55,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:31:55,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:31:55,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:31:55,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:31:55,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:31:55,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:31:55,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:31:55,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:31:55,058 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:31:55,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:31:55,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:31:55,060 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:31:55,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:31:55,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:31:55,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:31:55,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:31:55,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:31:55,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:31:55,064 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:31:55,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:31:55,065 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:31:55,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:31:55,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:31:55,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:31:55,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:31:55,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:31:55,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:31:55,069 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:31:55,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:31:55,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:31:55,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:31:55,072 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:31:55,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:31:55,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:31:55,073 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:31:55,074 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_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d5cb8d9caea7ccafc5dde86756b709e1bbbadc4ec66724ae09094031008d598 [2023-11-12 02:31:55,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:31:55,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:31:55,418 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:31:55,419 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:31:55,420 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:31:55,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-11-12 02:31:58,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:31:58,811 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:31:58,812 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-11-12 02:31:58,827 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/data/500397a21/6aa4c0b87dd546d18fd9528dd456331c/FLAGc63d656fd [2023-11-12 02:31:58,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/data/500397a21/6aa4c0b87dd546d18fd9528dd456331c [2023-11-12 02:31:58,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:31:58,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:31:58,850 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:58,851 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:31:58,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:31:58,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:58" (1/1) ... [2023-11-12 02:31:58,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8ac443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:58, skipping insertion in model container [2023-11-12 02:31:58,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:58" (1/1) ... [2023-11-12 02:31:58,941 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:31:59,332 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_b391e289-4c1b-430c-9ff8-be767e35ebe9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2023-11-12 02:31:59,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:59,406 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:31:59,476 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_b391e289-4c1b-430c-9ff8-be767e35ebe9/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2023-11-12 02:31:59,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:59,547 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:31:59,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59 WrapperNode [2023-11-12 02:31:59,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:59,549 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:59,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:31:59,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:31:59,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,631 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 887 [2023-11-12 02:31:59,632 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:59,633 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:31:59,633 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:31:59,633 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:31:59,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,677 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:31:59,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:31:59,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:31:59,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:31:59,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (1/1) ... [2023-11-12 02:31:59,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:31:59,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:59,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:31:59,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b391e289-4c1b-430c-9ff8-be767e35ebe9/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:31:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:31:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:31:59,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:31:59,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:31:59,997 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:31:59,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:32:00,817 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:32:00,849 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:32:00,851 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:32:00,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:32:00 BoogieIcfgContainer [2023-11-12 02:32:00,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:32:00,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:32:00,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:32:00,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:32:00,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:31:58" (1/3) ... [2023-11-12 02:32:00,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dd1168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:32:00, skipping insertion in model container [2023-11-12 02:32:00,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:59" (2/3) ... [2023-11-12 02:32:00,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dd1168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:32:00, skipping insertion in model container [2023-11-12 02:32:00,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:32:00" (3/3) ... [2023-11-12 02:32:00,869 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-11-12 02:32:00,911 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:32:00,911 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:32:00,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:32:00,978 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;@3e2bdcf0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:32:00,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:32:00,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 213 states have (on average 1.676056338028169) internal successors, (357), 246 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 02:32:01,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:01,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:01,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:01,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1369000833, now seen corresponding path program 1 times [2023-11-12 02:32:01,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:01,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848514748] [2023-11-12 02:32:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:01,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848514748] [2023-11-12 02:32:01,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848514748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:01,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:01,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:32:01,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664301645] [2023-11-12 02:32:01,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:01,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:32:01,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:01,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:32:01,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:32:01,638 INFO L87 Difference]: Start difference. First operand has 247 states, 213 states have (on average 1.676056338028169) internal successors, (357), 246 states have internal predecessors, (357), 0 states have call successors, (0), 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 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:01,850 INFO L93 Difference]: Finished difference Result 434 states and 652 transitions. [2023-11-12 02:32:01,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:32:01,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-12 02:32:01,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:01,870 INFO L225 Difference]: With dead ends: 434 [2023-11-12 02:32:01,870 INFO L226 Difference]: Without dead ends: 209 [2023-11-12 02:32:01,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:32:01,882 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 96 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:01,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 919 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:32:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-12 02:32:01,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-12 02:32:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.4807692307692308) internal successors, (308), 208 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:01,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 308 transitions. [2023-11-12 02:32:01,935 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 308 transitions. Word has length 79 [2023-11-12 02:32:01,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:01,936 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 308 transitions. [2023-11-12 02:32:01,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:01,937 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 308 transitions. [2023-11-12 02:32:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-12 02:32:01,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:01,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:01,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:32:01,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:01,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:01,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1406572509, now seen corresponding path program 1 times [2023-11-12 02:32:01,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:01,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492008904] [2023-11-12 02:32:01,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:01,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:02,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492008904] [2023-11-12 02:32:02,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492008904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:02,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:02,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:02,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336597069] [2023-11-12 02:32:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:02,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:02,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:02,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:02,121 INFO L87 Difference]: Start difference. First operand 209 states and 308 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:02,161 INFO L93 Difference]: Finished difference Result 472 states and 719 transitions. [2023-11-12 02:32:02,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:02,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-11-12 02:32:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:02,164 INFO L225 Difference]: With dead ends: 472 [2023-11-12 02:32:02,182 INFO L226 Difference]: Without dead ends: 304 [2023-11-12 02:32:02,183 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 [2023-11-12 02:32:02,185 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 169 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:02,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 541 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-12 02:32:02,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2023-11-12 02:32:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 1.5016611295681064) internal successors, (452), 301 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 452 transitions. [2023-11-12 02:32:02,208 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 452 transitions. Word has length 109 [2023-11-12 02:32:02,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:02,209 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 452 transitions. [2023-11-12 02:32:02,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 452 transitions. [2023-11-12 02:32:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-12 02:32:02,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:02,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:02,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:32:02,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:02,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1105344852, now seen corresponding path program 1 times [2023-11-12 02:32:02,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:02,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734310550] [2023-11-12 02:32:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:02,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:02,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734310550] [2023-11-12 02:32:02,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734310550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:02,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:02,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:02,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850221722] [2023-11-12 02:32:02,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:02,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:02,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:02,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:02,377 INFO L87 Difference]: Start difference. First operand 302 states and 452 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:02,414 INFO L93 Difference]: Finished difference Result 721 states and 1106 transitions. [2023-11-12 02:32:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:02,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-11-12 02:32:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:02,423 INFO L225 Difference]: With dead ends: 721 [2023-11-12 02:32:02,423 INFO L226 Difference]: Without dead ends: 466 [2023-11-12 02:32:02,431 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 [2023-11-12 02:32:02,435 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 156 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:02,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 581 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-12 02:32:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 464. [2023-11-12 02:32:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.5161987041036717) internal successors, (702), 463 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 702 transitions. [2023-11-12 02:32:02,488 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 702 transitions. Word has length 111 [2023-11-12 02:32:02,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:02,492 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 702 transitions. [2023-11-12 02:32:02,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,493 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 702 transitions. [2023-11-12 02:32:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-12 02:32:02,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:02,504 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:02,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:32:02,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:02,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash 287285005, now seen corresponding path program 1 times [2023-11-12 02:32:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928679228] [2023-11-12 02:32:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:02,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:02,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:02,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928679228] [2023-11-12 02:32:02,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928679228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:02,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:02,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:02,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134142256] [2023-11-12 02:32:02,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:02,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:02,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:02,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:02,672 INFO L87 Difference]: Start difference. First operand 464 states and 702 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:02,707 INFO L93 Difference]: Finished difference Result 1149 states and 1766 transitions. [2023-11-12 02:32:02,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:02,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-11-12 02:32:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:02,713 INFO L225 Difference]: With dead ends: 1149 [2023-11-12 02:32:02,713 INFO L226 Difference]: Without dead ends: 738 [2023-11-12 02:32:02,714 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 [2023-11-12 02:32:02,715 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 143 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:02,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 501 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2023-11-12 02:32:02,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 736. [2023-11-12 02:32:02,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 1.5210884353741496) internal successors, (1118), 735 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1118 transitions. [2023-11-12 02:32:02,740 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1118 transitions. Word has length 113 [2023-11-12 02:32:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:02,741 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1118 transitions. [2023-11-12 02:32:02,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1118 transitions. [2023-11-12 02:32:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-12 02:32:02,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:02,745 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:02,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:32:02,745 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:02,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash 155565224, now seen corresponding path program 1 times [2023-11-12 02:32:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:02,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012919564] [2023-11-12 02:32:02,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:02,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:02,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:02,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012919564] [2023-11-12 02:32:02,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012919564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:02,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:02,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:02,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277388937] [2023-11-12 02:32:02,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:02,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:02,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:02,888 INFO L87 Difference]: Start difference. First operand 736 states and 1118 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:02,929 INFO L93 Difference]: Finished difference Result 1851 states and 2834 transitions. [2023-11-12 02:32:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:02,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2023-11-12 02:32:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:02,950 INFO L225 Difference]: With dead ends: 1851 [2023-11-12 02:32:02,950 INFO L226 Difference]: Without dead ends: 1174 [2023-11-12 02:32:02,952 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 [2023-11-12 02:32:02,957 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 130 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:02,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 509 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:02,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2023-11-12 02:32:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1172. [2023-11-12 02:32:02,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 1.5149444918872759) internal successors, (1774), 1171 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1774 transitions. [2023-11-12 02:32:02,994 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1774 transitions. Word has length 115 [2023-11-12 02:32:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:02,995 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1774 transitions. [2023-11-12 02:32:02,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:02,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1774 transitions. [2023-11-12 02:32:03,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-12 02:32:03,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:03,004 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:03,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:32:03,004 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:03,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2047962190, now seen corresponding path program 1 times [2023-11-12 02:32:03,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:03,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445862838] [2023-11-12 02:32:03,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:03,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:03,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:03,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445862838] [2023-11-12 02:32:03,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445862838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:03,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:03,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:03,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36819457] [2023-11-12 02:32:03,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:03,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:03,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:03,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:03,125 INFO L87 Difference]: Start difference. First operand 1172 states and 1774 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:03,172 INFO L93 Difference]: Finished difference Result 2933 states and 4442 transitions. [2023-11-12 02:32:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:03,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2023-11-12 02:32:03,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:03,184 INFO L225 Difference]: With dead ends: 2933 [2023-11-12 02:32:03,184 INFO L226 Difference]: Without dead ends: 1826 [2023-11-12 02:32:03,186 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 [2023-11-12 02:32:03,188 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 117 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:03,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 461 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:03,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2023-11-12 02:32:03,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1824. [2023-11-12 02:32:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1823 states have (on average 1.4953373560065826) internal successors, (2726), 1823 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2726 transitions. [2023-11-12 02:32:03,250 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2726 transitions. Word has length 117 [2023-11-12 02:32:03,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:03,250 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 2726 transitions. [2023-11-12 02:32:03,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2726 transitions. [2023-11-12 02:32:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-12 02:32:03,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:03,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:03,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:32:03,260 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:03,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:03,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1115406563, now seen corresponding path program 1 times [2023-11-12 02:32:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:03,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031710921] [2023-11-12 02:32:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:03,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:03,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:03,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031710921] [2023-11-12 02:32:03,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031710921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:03,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:03,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:03,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142787414] [2023-11-12 02:32:03,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:32:03,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:03,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:32:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:03,563 INFO L87 Difference]: Start difference. First operand 1824 states and 2726 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:03,979 INFO L93 Difference]: Finished difference Result 15813 states and 23601 transitions. [2023-11-12 02:32:03,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:32:03,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2023-11-12 02:32:03,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:04,058 INFO L225 Difference]: With dead ends: 15813 [2023-11-12 02:32:04,058 INFO L226 Difference]: Without dead ends: 14059 [2023-11-12 02:32:04,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:32:04,071 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 2303 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2303 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:04,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2303 Valid, 1855 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:32:04,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14059 states. [2023-11-12 02:32:04,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14059 to 3522. [2023-11-12 02:32:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 3521 states have (on average 1.481397330303891) internal successors, (5216), 3521 states have internal predecessors, (5216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:04,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 5216 transitions. [2023-11-12 02:32:04,318 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 5216 transitions. Word has length 119 [2023-11-12 02:32:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:04,319 INFO L495 AbstractCegarLoop]: Abstraction has 3522 states and 5216 transitions. [2023-11-12 02:32:04,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 5216 transitions. [2023-11-12 02:32:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-12 02:32:04,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:04,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:04,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:32:04,331 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:04,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash 551400311, now seen corresponding path program 1 times [2023-11-12 02:32:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827335461] [2023-11-12 02:32:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:04,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:04,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827335461] [2023-11-12 02:32:04,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827335461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:04,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:04,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:04,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666630216] [2023-11-12 02:32:04,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:04,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:04,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:04,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:04,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:04,520 INFO L87 Difference]: Start difference. First operand 3522 states and 5216 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:04,595 INFO L93 Difference]: Finished difference Result 8162 states and 12129 transitions. [2023-11-12 02:32:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:04,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-11-12 02:32:04,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:04,619 INFO L225 Difference]: With dead ends: 8162 [2023-11-12 02:32:04,619 INFO L226 Difference]: Without dead ends: 4709 [2023-11-12 02:32:04,623 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 [2023-11-12 02:32:04,626 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 186 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:04,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 582 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2023-11-12 02:32:04,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4707. [2023-11-12 02:32:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 4706 states have (on average 1.4723756906077348) internal successors, (6929), 4706 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 6929 transitions. [2023-11-12 02:32:04,751 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 6929 transitions. Word has length 123 [2023-11-12 02:32:04,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:04,752 INFO L495 AbstractCegarLoop]: Abstraction has 4707 states and 6929 transitions. [2023-11-12 02:32:04,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:04,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 6929 transitions. [2023-11-12 02:32:04,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-12 02:32:04,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:04,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:04,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:32:04,766 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:04,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:04,767 INFO L85 PathProgramCache]: Analyzing trace with hash 176931542, now seen corresponding path program 1 times [2023-11-12 02:32:04,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:04,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480308053] [2023-11-12 02:32:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:05,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:05,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480308053] [2023-11-12 02:32:05,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480308053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:05,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:05,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:05,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475412658] [2023-11-12 02:32:05,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:05,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:32:05,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:05,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:32:05,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:05,308 INFO L87 Difference]: Start difference. First operand 4707 states and 6929 transitions. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:05,633 INFO L93 Difference]: Finished difference Result 9346 states and 13778 transitions. [2023-11-12 02:32:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:32:05,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2023-11-12 02:32:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:05,654 INFO L225 Difference]: With dead ends: 9346 [2023-11-12 02:32:05,655 INFO L226 Difference]: Without dead ends: 4709 [2023-11-12 02:32:05,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:32:05,661 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 398 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:05,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 984 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:32:05,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4709 states. [2023-11-12 02:32:05,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4709 to 4707. [2023-11-12 02:32:05,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 4706 states have (on average 1.4551636209094774) internal successors, (6848), 4706 states have internal predecessors, (6848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 6848 transitions. [2023-11-12 02:32:05,812 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 6848 transitions. Word has length 123 [2023-11-12 02:32:05,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:05,813 INFO L495 AbstractCegarLoop]: Abstraction has 4707 states and 6848 transitions. [2023-11-12 02:32:05,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:05,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 6848 transitions. [2023-11-12 02:32:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:32:05,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:05,825 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:05,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:32:05,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:05,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash -382371942, now seen corresponding path program 1 times [2023-11-12 02:32:05,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:05,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203906226] [2023-11-12 02:32:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:05,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:06,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:06,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203906226] [2023-11-12 02:32:06,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203906226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:06,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:06,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:06,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193976131] [2023-11-12 02:32:06,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:06,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:32:06,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:32:06,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:06,148 INFO L87 Difference]: Start difference. First operand 4707 states and 6848 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:06,468 INFO L93 Difference]: Finished difference Result 24357 states and 35496 transitions. [2023-11-12 02:32:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:32:06,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-12 02:32:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:06,518 INFO L225 Difference]: With dead ends: 24357 [2023-11-12 02:32:06,519 INFO L226 Difference]: Without dead ends: 20691 [2023-11-12 02:32:06,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:32:06,529 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1516 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:06,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1531 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:32:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20691 states. [2023-11-12 02:32:06,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20691 to 8542. [2023-11-12 02:32:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8542 states, 8541 states have (on average 1.4463177613862546) internal successors, (12353), 8541 states have internal predecessors, (12353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8542 states to 8542 states and 12353 transitions. [2023-11-12 02:32:06,920 INFO L78 Accepts]: Start accepts. Automaton has 8542 states and 12353 transitions. Word has length 124 [2023-11-12 02:32:06,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:06,921 INFO L495 AbstractCegarLoop]: Abstraction has 8542 states and 12353 transitions. [2023-11-12 02:32:06,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:06,922 INFO L276 IsEmpty]: Start isEmpty. Operand 8542 states and 12353 transitions. [2023-11-12 02:32:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:32:06,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:06,942 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:06,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:32:06,943 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:06,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:06,944 INFO L85 PathProgramCache]: Analyzing trace with hash -354034678, now seen corresponding path program 1 times [2023-11-12 02:32:06,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:06,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492590699] [2023-11-12 02:32:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:07,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:07,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492590699] [2023-11-12 02:32:07,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492590699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:07,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:07,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:07,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995249721] [2023-11-12 02:32:07,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:07,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:32:07,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:07,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:32:07,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:07,290 INFO L87 Difference]: Start difference. First operand 8542 states and 12353 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:07,690 INFO L93 Difference]: Finished difference Result 28073 states and 40864 transitions. [2023-11-12 02:32:07,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:32:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-12 02:32:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:07,743 INFO L225 Difference]: With dead ends: 28073 [2023-11-12 02:32:07,743 INFO L226 Difference]: Without dead ends: 24407 [2023-11-12 02:32:07,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:32:07,755 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 1382 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:07,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 1736 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:32:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24407 states. [2023-11-12 02:32:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24407 to 14267. [2023-11-12 02:32:08,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14267 states, 14266 states have (on average 1.4432917426047946) internal successors, (20590), 14266 states have internal predecessors, (20590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:08,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14267 states to 14267 states and 20590 transitions. [2023-11-12 02:32:08,198 INFO L78 Accepts]: Start accepts. Automaton has 14267 states and 20590 transitions. Word has length 124 [2023-11-12 02:32:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:08,199 INFO L495 AbstractCegarLoop]: Abstraction has 14267 states and 20590 transitions. [2023-11-12 02:32:08,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 14267 states and 20590 transitions. [2023-11-12 02:32:08,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:32:08,223 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:08,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:08,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:32:08,225 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:08,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:08,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1968161173, now seen corresponding path program 1 times [2023-11-12 02:32:08,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:08,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611859956] [2023-11-12 02:32:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:08,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:08,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:08,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611859956] [2023-11-12 02:32:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611859956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:08,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:08,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:08,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191892843] [2023-11-12 02:32:08,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:08,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:32:08,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:08,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:32:08,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:08,599 INFO L87 Difference]: Start difference. First operand 14267 states and 20590 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:08,922 INFO L93 Difference]: Finished difference Result 31867 states and 46344 transitions. [2023-11-12 02:32:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:32:08,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-12 02:32:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:08,982 INFO L225 Difference]: With dead ends: 31867 [2023-11-12 02:32:08,982 INFO L226 Difference]: Without dead ends: 28201 [2023-11-12 02:32:08,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:32:08,995 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1442 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:08,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 1748 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:32:09,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28201 states. [2023-11-12 02:32:09,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28201 to 18147. [2023-11-12 02:32:09,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18147 states, 18146 states have (on average 1.4438443734156288) internal successors, (26200), 18146 states have internal predecessors, (26200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18147 states to 18147 states and 26200 transitions. [2023-11-12 02:32:09,697 INFO L78 Accepts]: Start accepts. Automaton has 18147 states and 26200 transitions. Word has length 124 [2023-11-12 02:32:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:09,697 INFO L495 AbstractCegarLoop]: Abstraction has 18147 states and 26200 transitions. [2023-11-12 02:32:09,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:09,698 INFO L276 IsEmpty]: Start isEmpty. Operand 18147 states and 26200 transitions. [2023-11-12 02:32:09,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:32:09,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:09,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:09,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:32:09,725 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:09,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1282449422, now seen corresponding path program 1 times [2023-11-12 02:32:09,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:09,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593272856] [2023-11-12 02:32:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:09,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:09,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593272856] [2023-11-12 02:32:09,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593272856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:09,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:09,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:09,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077031288] [2023-11-12 02:32:09,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:09,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:32:09,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:32:09,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:09,988 INFO L87 Difference]: Start difference. First operand 18147 states and 26200 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:10,377 INFO L93 Difference]: Finished difference Result 35718 states and 51910 transitions. [2023-11-12 02:32:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:32:10,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-12 02:32:10,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:10,441 INFO L225 Difference]: With dead ends: 35718 [2023-11-12 02:32:10,441 INFO L226 Difference]: Without dead ends: 32052 [2023-11-12 02:32:10,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:32:10,453 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1657 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:10,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 1751 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:32:10,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32052 states. [2023-11-12 02:32:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32052 to 22036. [2023-11-12 02:32:10,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22036 states, 22035 states have (on average 1.4442931699568868) internal successors, (31825), 22035 states have internal predecessors, (31825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:11,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22036 states to 22036 states and 31825 transitions. [2023-11-12 02:32:11,022 INFO L78 Accepts]: Start accepts. Automaton has 22036 states and 31825 transitions. Word has length 124 [2023-11-12 02:32:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:11,022 INFO L495 AbstractCegarLoop]: Abstraction has 22036 states and 31825 transitions. [2023-11-12 02:32:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 22036 states and 31825 transitions. [2023-11-12 02:32:11,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:32:11,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:11,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:11,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:32:11,060 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:11,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:11,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1765417965, now seen corresponding path program 1 times [2023-11-12 02:32:11,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:11,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360227900] [2023-11-12 02:32:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:11,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:11,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360227900] [2023-11-12 02:32:11,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360227900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:11,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:11,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:32:11,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223170123] [2023-11-12 02:32:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:11,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:32:11,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:11,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:32:11,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:11,338 INFO L87 Difference]: Start difference. First operand 22036 states and 31825 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:11,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:11,896 INFO L93 Difference]: Finished difference Result 37214 states and 54061 transitions. [2023-11-12 02:32:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:32:11,898 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-12 02:32:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:12,008 INFO L225 Difference]: With dead ends: 37214 [2023-11-12 02:32:12,009 INFO L226 Difference]: Without dead ends: 34748 [2023-11-12 02:32:12,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:32:12,017 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1675 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:12,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 1296 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:32:12,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34748 states. [2023-11-12 02:32:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34748 to 24732. [2023-11-12 02:32:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24732 states, 24731 states have (on average 1.4449880716509644) internal successors, (35736), 24731 states have internal predecessors, (35736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24732 states to 24732 states and 35736 transitions. [2023-11-12 02:32:12,862 INFO L78 Accepts]: Start accepts. Automaton has 24732 states and 35736 transitions. Word has length 124 [2023-11-12 02:32:12,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:12,862 INFO L495 AbstractCegarLoop]: Abstraction has 24732 states and 35736 transitions. [2023-11-12 02:32:12,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:12,863 INFO L276 IsEmpty]: Start isEmpty. Operand 24732 states and 35736 transitions. [2023-11-12 02:32:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 02:32:12,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:12,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:12,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:32:12,897 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:12,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:12,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1430653822, now seen corresponding path program 1 times [2023-11-12 02:32:12,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:12,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485599417] [2023-11-12 02:32:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:12,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:13,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:13,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:13,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485599417] [2023-11-12 02:32:13,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485599417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:13,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:13,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:13,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653021294] [2023-11-12 02:32:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:13,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:13,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:13,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:13,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:13,003 INFO L87 Difference]: Start difference. First operand 24732 states and 35736 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:13,565 INFO L93 Difference]: Finished difference Result 72453 states and 104673 transitions. [2023-11-12 02:32:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:13,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-11-12 02:32:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:13,670 INFO L225 Difference]: With dead ends: 72453 [2023-11-12 02:32:13,670 INFO L226 Difference]: Without dead ends: 49120 [2023-11-12 02:32:13,700 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 [2023-11-12 02:32:13,701 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 147 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:13,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 324 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:32:13,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49120 states. [2023-11-12 02:32:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49120 to 49118. [2023-11-12 02:32:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49118 states, 49117 states have (on average 1.435857238837877) internal successors, (70525), 49117 states have internal predecessors, (70525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:15,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49118 states to 49118 states and 70525 transitions. [2023-11-12 02:32:15,061 INFO L78 Accepts]: Start accepts. Automaton has 49118 states and 70525 transitions. Word has length 126 [2023-11-12 02:32:15,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:15,061 INFO L495 AbstractCegarLoop]: Abstraction has 49118 states and 70525 transitions. [2023-11-12 02:32:15,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 49118 states and 70525 transitions. [2023-11-12 02:32:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 02:32:15,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:15,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:15,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:32:15,160 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:15,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:15,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1754976601, now seen corresponding path program 1 times [2023-11-12 02:32:15,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:15,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554230463] [2023-11-12 02:32:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:15,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:15,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:15,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554230463] [2023-11-12 02:32:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554230463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:15,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:15,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:15,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871497062] [2023-11-12 02:32:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:15,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:15,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:15,284 INFO L87 Difference]: Start difference. First operand 49118 states and 70525 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:16,324 INFO L93 Difference]: Finished difference Result 143271 states and 205360 transitions. [2023-11-12 02:32:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:16,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-11-12 02:32:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:16,533 INFO L225 Difference]: With dead ends: 143271 [2023-11-12 02:32:16,533 INFO L226 Difference]: Without dead ends: 97445 [2023-11-12 02:32:16,573 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 [2023-11-12 02:32:16,581 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 130 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:16,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 336 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:32:16,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97445 states. [2023-11-12 02:32:18,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97445 to 97443. [2023-11-12 02:32:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97443 states, 97442 states have (on average 1.4246628763777427) internal successors, (138822), 97442 states have internal predecessors, (138822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97443 states to 97443 states and 138822 transitions. [2023-11-12 02:32:18,445 INFO L78 Accepts]: Start accepts. Automaton has 97443 states and 138822 transitions. Word has length 126 [2023-11-12 02:32:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:18,445 INFO L495 AbstractCegarLoop]: Abstraction has 97443 states and 138822 transitions. [2023-11-12 02:32:18,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 97443 states and 138822 transitions. [2023-11-12 02:32:18,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 02:32:18,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:18,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:18,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:32:18,642 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:18,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:18,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1266122690, now seen corresponding path program 1 times [2023-11-12 02:32:18,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:18,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799786773] [2023-11-12 02:32:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:18,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:18,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:18,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799786773] [2023-11-12 02:32:18,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799786773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:18,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:18,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:32:18,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487986612] [2023-11-12 02:32:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:18,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:32:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:32:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:32:18,808 INFO L87 Difference]: Start difference. First operand 97443 states and 138822 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:20,091 INFO L93 Difference]: Finished difference Result 260935 states and 372450 transitions. [2023-11-12 02:32:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:32:20,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-11-12 02:32:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:20,825 INFO L225 Difference]: With dead ends: 260935 [2023-11-12 02:32:20,825 INFO L226 Difference]: Without dead ends: 163531 [2023-11-12 02:32:20,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:20,932 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1073 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:20,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 237 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:32:21,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163531 states. [2023-11-12 02:32:23,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163531 to 163529. [2023-11-12 02:32:23,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163529 states, 163528 states have (on average 1.4194939092999364) internal successors, (232127), 163528 states have internal predecessors, (232127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163529 states to 163529 states and 232127 transitions. [2023-11-12 02:32:23,652 INFO L78 Accepts]: Start accepts. Automaton has 163529 states and 232127 transitions. Word has length 126 [2023-11-12 02:32:23,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:23,652 INFO L495 AbstractCegarLoop]: Abstraction has 163529 states and 232127 transitions. [2023-11-12 02:32:23,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 163529 states and 232127 transitions. [2023-11-12 02:32:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 02:32:23,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:23,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:23,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:32:23,820 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:23,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1100076108, now seen corresponding path program 1 times [2023-11-12 02:32:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:23,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579377539] [2023-11-12 02:32:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:24,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:24,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579377539] [2023-11-12 02:32:24,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579377539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:24,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:24,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:32:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753062697] [2023-11-12 02:32:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:24,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:32:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:32:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:32:24,005 INFO L87 Difference]: Start difference. First operand 163529 states and 232127 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:25,619 INFO L93 Difference]: Finished difference Result 326989 states and 464174 transitions. [2023-11-12 02:32:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:32:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-11-12 02:32:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:25,816 INFO L225 Difference]: With dead ends: 326989 [2023-11-12 02:32:25,816 INFO L226 Difference]: Without dead ends: 163529 [2023-11-12 02:32:25,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:25,892 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 694 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:25,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 171 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:32:26,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163529 states. [2023-11-12 02:32:28,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163529 to 163529. [2023-11-12 02:32:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163529 states, 163528 states have (on average 1.406346313781126) internal successors, (229977), 163528 states have internal predecessors, (229977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163529 states to 163529 states and 229977 transitions. [2023-11-12 02:32:29,794 INFO L78 Accepts]: Start accepts. Automaton has 163529 states and 229977 transitions. Word has length 126 [2023-11-12 02:32:29,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:29,794 INFO L495 AbstractCegarLoop]: Abstraction has 163529 states and 229977 transitions. [2023-11-12 02:32:29,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:29,794 INFO L276 IsEmpty]: Start isEmpty. Operand 163529 states and 229977 transitions. [2023-11-12 02:32:30,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 02:32:30,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:30,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:30,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:32:30,042 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:30,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2088704620, now seen corresponding path program 1 times [2023-11-12 02:32:30,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:30,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689202052] [2023-11-12 02:32:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:30,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:30,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:30,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689202052] [2023-11-12 02:32:30,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689202052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:30,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:30,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:32:30,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793484567] [2023-11-12 02:32:30,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:30,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:32:30,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:32:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:32:30,242 INFO L87 Difference]: Start difference. First operand 163529 states and 229977 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:31,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:31,057 INFO L93 Difference]: Finished difference Result 241974 states and 341409 transitions. [2023-11-12 02:32:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:32:31,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-11-12 02:32:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:31,156 INFO L225 Difference]: With dead ends: 241974 [2023-11-12 02:32:31,156 INFO L226 Difference]: Without dead ends: 82296 [2023-11-12 02:32:31,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:31,217 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 711 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:31,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 155 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:32:31,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82296 states. [2023-11-12 02:32:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82296 to 82296. [2023-11-12 02:32:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82296 states, 82295 states have (on average 1.4037304818032688) internal successors, (115520), 82295 states have internal predecessors, (115520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82296 states to 82296 states and 115520 transitions. [2023-11-12 02:32:32,945 INFO L78 Accepts]: Start accepts. Automaton has 82296 states and 115520 transitions. Word has length 126 [2023-11-12 02:32:32,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:32,945 INFO L495 AbstractCegarLoop]: Abstraction has 82296 states and 115520 transitions. [2023-11-12 02:32:32,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 82296 states and 115520 transitions. [2023-11-12 02:32:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 02:32:33,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:33,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:33,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 02:32:33,016 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:33,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:33,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1800140574, now seen corresponding path program 1 times [2023-11-12 02:32:33,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:33,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147912018] [2023-11-12 02:32:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:33,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:33,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:33,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147912018] [2023-11-12 02:32:33,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147912018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:33,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:33,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:32:33,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63534515] [2023-11-12 02:32:33,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:33,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:32:33,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:33,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:32:33,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:32:33,707 INFO L87 Difference]: Start difference. First operand 82296 states and 115520 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:34,366 INFO L93 Difference]: Finished difference Result 164541 states and 230985 transitions. [2023-11-12 02:32:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:32:34,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-11-12 02:32:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:34,468 INFO L225 Difference]: With dead ends: 164541 [2023-11-12 02:32:34,468 INFO L226 Difference]: Without dead ends: 82296 [2023-11-12 02:32:34,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:32:34,515 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 689 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:34,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 163 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:32:34,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82296 states. [2023-11-12 02:32:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82296 to 82296. [2023-11-12 02:32:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82296 states, 82295 states have (on average 1.3911780788626285) internal successors, (114487), 82295 states have internal predecessors, (114487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:36,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82296 states to 82296 states and 114487 transitions. [2023-11-12 02:32:36,064 INFO L78 Accepts]: Start accepts. Automaton has 82296 states and 114487 transitions. Word has length 126 [2023-11-12 02:32:36,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:36,064 INFO L495 AbstractCegarLoop]: Abstraction has 82296 states and 114487 transitions. [2023-11-12 02:32:36,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:36,065 INFO L276 IsEmpty]: Start isEmpty. Operand 82296 states and 114487 transitions. [2023-11-12 02:32:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 02:32:36,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:36,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:36,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 02:32:36,141 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:36,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:36,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1240496766, now seen corresponding path program 1 times [2023-11-12 02:32:36,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:36,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881820578] [2023-11-12 02:32:36,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:36,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:36,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:36,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881820578] [2023-11-12 02:32:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881820578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:36,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:36,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730842642] [2023-11-12 02:32:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:36,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:36,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:36,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:36,294 INFO L87 Difference]: Start difference. First operand 82296 states and 114487 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:36,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:36,706 INFO L93 Difference]: Finished difference Result 145116 states and 202745 transitions. [2023-11-12 02:32:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:36,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-11-12 02:32:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:36,803 INFO L225 Difference]: With dead ends: 145116 [2023-11-12 02:32:36,804 INFO L226 Difference]: Without dead ends: 67406 [2023-11-12 02:32:36,846 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 [2023-11-12 02:32:36,847 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 98 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:36,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 436 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:36,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67406 states. [2023-11-12 02:32:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67406 to 67404. [2023-11-12 02:32:38,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67404 states, 67403 states have (on average 1.3873714819815142) internal successors, (93513), 67403 states have internal predecessors, (93513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67404 states to 67404 states and 93513 transitions. [2023-11-12 02:32:38,373 INFO L78 Accepts]: Start accepts. Automaton has 67404 states and 93513 transitions. Word has length 126 [2023-11-12 02:32:38,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:38,374 INFO L495 AbstractCegarLoop]: Abstraction has 67404 states and 93513 transitions. [2023-11-12 02:32:38,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:38,374 INFO L276 IsEmpty]: Start isEmpty. Operand 67404 states and 93513 transitions. [2023-11-12 02:32:38,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 02:32:38,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:38,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 02:32:38,414 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:38,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:38,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2118503005, now seen corresponding path program 1 times [2023-11-12 02:32:38,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:38,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321576357] [2023-11-12 02:32:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:38,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:38,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321576357] [2023-11-12 02:32:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321576357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:38,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:32:38,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944038749] [2023-11-12 02:32:38,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:32:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:32:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:32:38,565 INFO L87 Difference]: Start difference. First operand 67404 states and 93513 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:32:38,863 INFO L93 Difference]: Finished difference Result 98816 states and 137227 transitions. [2023-11-12 02:32:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:32:38,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2023-11-12 02:32:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:32:38,911 INFO L225 Difference]: With dead ends: 98816 [2023-11-12 02:32:38,911 INFO L226 Difference]: Without dead ends: 34172 [2023-11-12 02:32:38,942 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 [2023-11-12 02:32:38,944 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 102 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:32:38,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 422 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:32:38,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34172 states. [2023-11-12 02:32:39,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34172 to 34170. [2023-11-12 02:32:39,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34170 states, 34169 states have (on average 1.3745500307296088) internal successors, (46967), 34169 states have internal predecessors, (46967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:40,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34170 states to 34170 states and 46967 transitions. [2023-11-12 02:32:40,026 INFO L78 Accepts]: Start accepts. Automaton has 34170 states and 46967 transitions. Word has length 126 [2023-11-12 02:32:40,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:32:40,027 INFO L495 AbstractCegarLoop]: Abstraction has 34170 states and 46967 transitions. [2023-11-12 02:32:40,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:32:40,028 INFO L276 IsEmpty]: Start isEmpty. Operand 34170 states and 46967 transitions. [2023-11-12 02:32:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-12 02:32:40,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:32:40,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:32:40,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 02:32:40,044 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:32:40,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:32:40,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1390720098, now seen corresponding path program 1 times [2023-11-12 02:32:40,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:32:40,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230864310] [2023-11-12 02:32:40,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:32:40,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:32:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:32:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:32:40,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:32:40,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230864310] [2023-11-12 02:32:40,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230864310] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:32:40,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:32:40,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-12 02:32:40,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925389323] [2023-11-12 02:32:40,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:32:40,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-12 02:32:40,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:32:40,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-12 02:32:40,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:32:40,822 INFO L87 Difference]: Start difference. First operand 34170 states and 46967 transitions. Second operand has 14 states, 14 states have (on average 9.0) internal successors, (126), 13 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)