./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 c3ae342bfdc7bf76083bf4321cb5b6b26fe707bda9cd6edf475282aebbd1033a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:41:09,136 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:41:09,246 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:41:09,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:41:09,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:41:09,307 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:41:09,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:41:09,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:41:09,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:41:09,317 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:41:09,319 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:41:09,320 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:41:09,321 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:41:09,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:41:09,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:41:09,324 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:41:09,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:41:09,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:41:09,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:41:09,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:41:09,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:41:09,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:41:09,327 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:41:09,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:41:09,328 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:41:09,329 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:41:09,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:41:09,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:41:09,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:09,331 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:41:09,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:41:09,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:41:09,333 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:41:09,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:41:09,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:41:09,333 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:41:09,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:41:09,334 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:41:09,334 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:41:09,334 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_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3ae342bfdc7bf76083bf4321cb5b6b26fe707bda9cd6edf475282aebbd1033a [2023-11-06 22:41:09,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:41:09,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:41:09,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:41:09,663 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:41:09,663 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:41:09,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2023-11-06 22:41:12,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:41:13,288 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:41:13,289 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2023-11-06 22:41:13,300 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/data/b97880ef8/a84b26620bee403b97e13a593aa1b2bd/FLAG66200752d [2023-11-06 22:41:13,315 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/data/b97880ef8/a84b26620bee403b97e13a593aa1b2bd [2023-11-06 22:41:13,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:41:13,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:41:13,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:13,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:41:13,328 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:41:13,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6710318d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13, skipping insertion in model container [2023-11-06 22:41:13,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,374 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:41:13,622 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_dd5431e8-3d9c-4a93-86b7-cee34af30402/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c[12764,12777] [2023-11-06 22:41:13,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:13,641 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:41:13,708 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_dd5431e8-3d9c-4a93-86b7-cee34af30402/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c[12764,12777] [2023-11-06 22:41:13,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:41:13,728 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:41:13,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13 WrapperNode [2023-11-06 22:41:13,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:41:13,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:13,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:41:13,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:41:13,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,789 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 443 [2023-11-06 22:41:13,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:41:13,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:41:13,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:41:13,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:41:13,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,830 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,867 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:41:13,875 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:41:13,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:41:13,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:41:13,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (1/1) ... [2023-11-06 22:41:13,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:41:13,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:13,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:41:13,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd5431e8-3d9c-4a93-86b7-cee34af30402/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:41:13,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:41:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:41:13,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:41:13,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:41:14,183 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:41:14,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:41:14,918 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:41:14,927 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:41:14,933 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:41:14,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:14 BoogieIcfgContainer [2023-11-06 22:41:14,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:41:14,939 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:41:14,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:41:14,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:41:14,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:41:13" (1/3) ... [2023-11-06 22:41:14,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdd813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:14, skipping insertion in model container [2023-11-06 22:41:14,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:41:13" (2/3) ... [2023-11-06 22:41:14,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cdd813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:41:14, skipping insertion in model container [2023-11-06 22:41:14,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:41:14" (3/3) ... [2023-11-06 22:41:14,951 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2023-11-06 22:41:14,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:41:14,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:41:15,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:41:15,043 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=LoopsAndPotentialCycles, 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;@2657dc8a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:41:15,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:41:15,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 117 states have (on average 1.7863247863247864) internal successors, (209), 118 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:41:15,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:15,065 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] [2023-11-06 22:41:15,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:15,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:15,072 INFO L85 PathProgramCache]: Analyzing trace with hash 901132838, now seen corresponding path program 1 times [2023-11-06 22:41:15,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:15,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816572121] [2023-11-06 22:41:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:15,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:15,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:15,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816572121] [2023-11-06 22:41:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816572121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:15,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:15,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:41:15,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549687066] [2023-11-06 22:41:15,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:15,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:41:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:15,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:41:15,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:41:15,586 INFO L87 Difference]: Start difference. First operand has 119 states, 117 states have (on average 1.7863247863247864) internal successors, (209), 118 states have internal predecessors, (209), 0 states have call successors, (0), 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 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:15,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:15,655 INFO L93 Difference]: Finished difference Result 182 states and 316 transitions. [2023-11-06 22:41:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:41:15,658 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-11-06 22:41:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:15,673 INFO L225 Difference]: With dead ends: 182 [2023-11-06 22:41:15,674 INFO L226 Difference]: Without dead ends: 115 [2023-11-06 22:41:15,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:41:15,684 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:15,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:15,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-06 22:41:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-06 22:41:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.7719298245614035) internal successors, (202), 114 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:15,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 202 transitions. [2023-11-06 22:41:15,755 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 202 transitions. Word has length 37 [2023-11-06 22:41:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:15,756 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 202 transitions. [2023-11-06 22:41:15,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 202 transitions. [2023-11-06 22:41:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:41:15,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:15,762 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] [2023-11-06 22:41:15,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:41:15,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:15,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash 83484388, now seen corresponding path program 1 times [2023-11-06 22:41:15,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:15,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932271945] [2023-11-06 22:41:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:15,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:16,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932271945] [2023-11-06 22:41:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932271945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:16,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:16,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:16,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667669617] [2023-11-06 22:41:16,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:16,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:16,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:16,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:16,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:16,122 INFO L87 Difference]: Start difference. First operand 115 states and 202 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:16,300 INFO L93 Difference]: Finished difference Result 235 states and 406 transitions. [2023-11-06 22:41:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:16,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-11-06 22:41:16,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:16,311 INFO L225 Difference]: With dead ends: 235 [2023-11-06 22:41:16,311 INFO L226 Difference]: Without dead ends: 173 [2023-11-06 22:41:16,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:16,314 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 101 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:16,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 759 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:16,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-06 22:41:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 115. [2023-11-06 22:41:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5350877192982457) internal successors, (175), 114 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 175 transitions. [2023-11-06 22:41:16,327 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 175 transitions. Word has length 37 [2023-11-06 22:41:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:16,328 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 175 transitions. [2023-11-06 22:41:16,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 175 transitions. [2023-11-06 22:41:16,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-06 22:41:16,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:16,331 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] [2023-11-06 22:41:16,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:41:16,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:16,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash -105296595, now seen corresponding path program 1 times [2023-11-06 22:41:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67103056] [2023-11-06 22:41:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:16,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:16,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67103056] [2023-11-06 22:41:16,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67103056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:16,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:16,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440449429] [2023-11-06 22:41:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:16,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:16,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:16,480 INFO L87 Difference]: Start difference. First operand 115 states and 175 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:16,537 INFO L93 Difference]: Finished difference Result 222 states and 358 transitions. [2023-11-06 22:41:16,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-11-06 22:41:16,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:16,543 INFO L225 Difference]: With dead ends: 222 [2023-11-06 22:41:16,543 INFO L226 Difference]: Without dead ends: 164 [2023-11-06 22:41:16,549 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 [2023-11-06 22:41:16,554 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 75 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:16,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 373 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-06 22:41:16,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2023-11-06 22:41:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.565217391304348) internal successors, (252), 161 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 252 transitions. [2023-11-06 22:41:16,588 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 252 transitions. Word has length 63 [2023-11-06 22:41:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:16,592 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 252 transitions. [2023-11-06 22:41:16,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,594 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 252 transitions. [2023-11-06 22:41:16,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:41:16,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:16,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:16,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:41:16,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:16,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2025700882, now seen corresponding path program 1 times [2023-11-06 22:41:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:16,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935647269] [2023-11-06 22:41:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:16,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:16,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:16,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935647269] [2023-11-06 22:41:16,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935647269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:16,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:16,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:16,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377791875] [2023-11-06 22:41:16,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:16,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:16,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:16,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:16,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:16,765 INFO L87 Difference]: Start difference. First operand 162 states and 252 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:16,796 INFO L93 Difference]: Finished difference Result 269 states and 435 transitions. [2023-11-06 22:41:16,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:16,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-11-06 22:41:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:16,801 INFO L225 Difference]: With dead ends: 269 [2023-11-06 22:41:16,801 INFO L226 Difference]: Without dead ends: 211 [2023-11-06 22:41:16,803 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 [2023-11-06 22:41:16,814 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 84 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:16,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 399 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-06 22:41:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2023-11-06 22:41:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5961538461538463) internal successors, (332), 208 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 332 transitions. [2023-11-06 22:41:16,842 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 332 transitions. Word has length 65 [2023-11-06 22:41:16,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:16,842 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 332 transitions. [2023-11-06 22:41:16,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,843 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 332 transitions. [2023-11-06 22:41:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:41:16,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:16,845 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] [2023-11-06 22:41:16,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:41:16,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:16,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:16,847 INFO L85 PathProgramCache]: Analyzing trace with hash 34844053, now seen corresponding path program 1 times [2023-11-06 22:41:16,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:16,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403254108] [2023-11-06 22:41:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:16,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:16,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:16,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403254108] [2023-11-06 22:41:16,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403254108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:16,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:16,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:16,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995261375] [2023-11-06 22:41:16,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:16,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:16,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:16,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:16,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:16,940 INFO L87 Difference]: Start difference. First operand 209 states and 332 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:16,975 INFO L93 Difference]: Finished difference Result 488 states and 803 transitions. [2023-11-06 22:41:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:16,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-11-06 22:41:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:16,980 INFO L225 Difference]: With dead ends: 488 [2023-11-06 22:41:16,980 INFO L226 Difference]: Without dead ends: 338 [2023-11-06 22:41:16,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:16,985 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 77 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:16,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 386 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:16,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-11-06 22:41:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2023-11-06 22:41:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.6238805970149253) internal successors, (544), 335 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 544 transitions. [2023-11-06 22:41:17,055 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 544 transitions. Word has length 65 [2023-11-06 22:41:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:17,058 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 544 transitions. [2023-11-06 22:41:17,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 544 transitions. [2023-11-06 22:41:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:41:17,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:17,063 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] [2023-11-06 22:41:17,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:41:17,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:17,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1167801350, now seen corresponding path program 1 times [2023-11-06 22:41:17,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:17,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062902080] [2023-11-06 22:41:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:17,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:17,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:17,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062902080] [2023-11-06 22:41:17,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062902080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:17,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:17,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:17,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059294551] [2023-11-06 22:41:17,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:17,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:17,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:17,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:17,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:17,204 INFO L87 Difference]: Start difference. First operand 336 states and 544 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:17,266 INFO L93 Difference]: Finished difference Result 609 states and 1003 transitions. [2023-11-06 22:41:17,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:17,267 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-11-06 22:41:17,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:17,271 INFO L225 Difference]: With dead ends: 609 [2023-11-06 22:41:17,271 INFO L226 Difference]: Without dead ends: 459 [2023-11-06 22:41:17,272 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 [2023-11-06 22:41:17,273 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 78 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:17,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 391 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:17,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-06 22:41:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 457. [2023-11-06 22:41:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 456 states have (on average 1.6293859649122806) internal successors, (743), 456 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 743 transitions. [2023-11-06 22:41:17,322 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 743 transitions. Word has length 67 [2023-11-06 22:41:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:17,326 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 743 transitions. [2023-11-06 22:41:17,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,327 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 743 transitions. [2023-11-06 22:41:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:41:17,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:17,334 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] [2023-11-06 22:41:17,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:41:17,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:17,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:17,336 INFO L85 PathProgramCache]: Analyzing trace with hash -171119363, now seen corresponding path program 1 times [2023-11-06 22:41:17,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:17,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609317012] [2023-11-06 22:41:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:17,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:17,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:17,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609317012] [2023-11-06 22:41:17,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609317012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:17,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:17,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057488411] [2023-11-06 22:41:17,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:17,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:17,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:17,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:17,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:17,475 INFO L87 Difference]: Start difference. First operand 457 states and 743 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:17,524 INFO L93 Difference]: Finished difference Result 1178 states and 1942 transitions. [2023-11-06 22:41:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:17,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-11-06 22:41:17,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:17,530 INFO L225 Difference]: With dead ends: 1178 [2023-11-06 22:41:17,530 INFO L226 Difference]: Without dead ends: 786 [2023-11-06 22:41:17,531 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 [2023-11-06 22:41:17,532 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 71 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:17,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 379 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-11-06 22:41:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 784. [2023-11-06 22:41:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.6270753512132823) internal successors, (1274), 783 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1274 transitions. [2023-11-06 22:41:17,580 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1274 transitions. Word has length 67 [2023-11-06 22:41:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:17,580 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1274 transitions. [2023-11-06 22:41:17,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1274 transitions. [2023-11-06 22:41:17,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:41:17,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:17,582 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] [2023-11-06 22:41:17,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:41:17,582 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:17,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:17,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1554688226, now seen corresponding path program 1 times [2023-11-06 22:41:17,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:17,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594725647] [2023-11-06 22:41:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:17,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594725647] [2023-11-06 22:41:17,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594725647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:17,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:17,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:17,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95128184] [2023-11-06 22:41:17,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:17,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:17,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:17,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:17,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:17,668 INFO L87 Difference]: Start difference. First operand 784 states and 1274 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:17,739 INFO L93 Difference]: Finished difference Result 1475 states and 2419 transitions. [2023-11-06 22:41:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-06 22:41:17,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:17,747 INFO L225 Difference]: With dead ends: 1475 [2023-11-06 22:41:17,748 INFO L226 Difference]: Without dead ends: 1083 [2023-11-06 22:41:17,749 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 [2023-11-06 22:41:17,750 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 72 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:17,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 383 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2023-11-06 22:41:17,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1081. [2023-11-06 22:41:17,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 1080 states have (on average 1.6203703703703705) internal successors, (1750), 1080 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1750 transitions. [2023-11-06 22:41:17,825 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1750 transitions. Word has length 69 [2023-11-06 22:41:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:17,825 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1750 transitions. [2023-11-06 22:41:17,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1750 transitions. [2023-11-06 22:41:17,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:41:17,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:17,827 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] [2023-11-06 22:41:17,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:41:17,827 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:17,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash 859687781, now seen corresponding path program 1 times [2023-11-06 22:41:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:17,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348732149] [2023-11-06 22:41:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:17,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:17,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348732149] [2023-11-06 22:41:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348732149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:17,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:17,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78193430] [2023-11-06 22:41:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:17,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:17,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:17,945 INFO L87 Difference]: Start difference. First operand 1081 states and 1750 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:18,518 INFO L93 Difference]: Finished difference Result 5482 states and 9073 transitions. [2023-11-06 22:41:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:41:18,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-06 22:41:18,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:18,549 INFO L225 Difference]: With dead ends: 5482 [2023-11-06 22:41:18,549 INFO L226 Difference]: Without dead ends: 4472 [2023-11-06 22:41:18,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:41:18,553 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 584 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:18,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1086 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4472 states. [2023-11-06 22:41:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4472 to 2024. [2023-11-06 22:41:18,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2023 states have (on average 1.6173999011369253) internal successors, (3272), 2023 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 3272 transitions. [2023-11-06 22:41:18,818 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 3272 transitions. Word has length 69 [2023-11-06 22:41:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:18,819 INFO L495 AbstractCegarLoop]: Abstraction has 2024 states and 3272 transitions. [2023-11-06 22:41:18,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 3272 transitions. [2023-11-06 22:41:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 22:41:18,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:18,820 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] [2023-11-06 22:41:18,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:41:18,821 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:18,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1042315252, now seen corresponding path program 1 times [2023-11-06 22:41:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:18,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518618611] [2023-11-06 22:41:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:18,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:18,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518618611] [2023-11-06 22:41:18,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518618611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:18,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:18,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:18,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864396529] [2023-11-06 22:41:18,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:18,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:41:18,920 INFO L87 Difference]: Start difference. First operand 2024 states and 3272 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:19,452 INFO L93 Difference]: Finished difference Result 6607 states and 10831 transitions. [2023-11-06 22:41:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:41:19,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2023-11-06 22:41:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:19,485 INFO L225 Difference]: With dead ends: 6607 [2023-11-06 22:41:19,485 INFO L226 Difference]: Without dead ends: 4654 [2023-11-06 22:41:19,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:19,491 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 284 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:19,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 495 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:19,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2023-11-06 22:41:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 3320. [2023-11-06 22:41:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3320 states, 3319 states have (on average 1.619764989454655) internal successors, (5376), 3319 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3320 states to 3320 states and 5376 transitions. [2023-11-06 22:41:19,865 INFO L78 Accepts]: Start accepts. Automaton has 3320 states and 5376 transitions. Word has length 70 [2023-11-06 22:41:19,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:19,866 INFO L495 AbstractCegarLoop]: Abstraction has 3320 states and 5376 transitions. [2023-11-06 22:41:19,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3320 states and 5376 transitions. [2023-11-06 22:41:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-06 22:41:19,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:19,867 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] [2023-11-06 22:41:19,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:41:19,868 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:19,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash 294137212, now seen corresponding path program 1 times [2023-11-06 22:41:19,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:19,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241662267] [2023-11-06 22:41:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:19,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:19,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241662267] [2023-11-06 22:41:19,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241662267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:19,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:19,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098430884] [2023-11-06 22:41:19,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:19,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:19,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:41:19,969 INFO L87 Difference]: Start difference. First operand 3320 states and 5376 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:20,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:20,714 INFO L93 Difference]: Finished difference Result 10675 states and 17375 transitions. [2023-11-06 22:41:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:41:20,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-11-06 22:41:20,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:20,762 INFO L225 Difference]: With dead ends: 10675 [2023-11-06 22:41:20,763 INFO L226 Difference]: Without dead ends: 7426 [2023-11-06 22:41:20,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:20,768 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 282 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:20,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 551 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:20,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2023-11-06 22:41:21,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 5344. [2023-11-06 22:41:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.609208309938237) internal successors, (8598), 5343 states have internal predecessors, (8598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 8598 transitions. [2023-11-06 22:41:21,386 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 8598 transitions. Word has length 71 [2023-11-06 22:41:21,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:21,386 INFO L495 AbstractCegarLoop]: Abstraction has 5344 states and 8598 transitions. [2023-11-06 22:41:21,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:21,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 8598 transitions. [2023-11-06 22:41:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-06 22:41:21,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:21,388 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] [2023-11-06 22:41:21,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:41:21,388 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:21,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:21,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1056505021, now seen corresponding path program 1 times [2023-11-06 22:41:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:21,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703208550] [2023-11-06 22:41:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:21,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:21,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:21,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:21,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703208550] [2023-11-06 22:41:21,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703208550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:21,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:21,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:41:21,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267106653] [2023-11-06 22:41:21,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:21,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:41:21,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:41:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:41:21,507 INFO L87 Difference]: Start difference. First operand 5344 states and 8598 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:22,667 INFO L93 Difference]: Finished difference Result 16871 states and 27255 transitions. [2023-11-06 22:41:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:41:22,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-11-06 22:41:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:22,727 INFO L225 Difference]: With dead ends: 16871 [2023-11-06 22:41:22,727 INFO L226 Difference]: Without dead ends: 11598 [2023-11-06 22:41:22,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:22,736 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 280 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:22,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 553 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:22,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11598 states. [2023-11-06 22:41:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11598 to 8428. [2023-11-06 22:41:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 1.5981962738815711) internal successors, (13468), 8427 states have internal predecessors, (13468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 13468 transitions. [2023-11-06 22:41:23,880 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 13468 transitions. Word has length 72 [2023-11-06 22:41:23,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:23,881 INFO L495 AbstractCegarLoop]: Abstraction has 8428 states and 13468 transitions. [2023-11-06 22:41:23,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 13468 transitions. [2023-11-06 22:41:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-06 22:41:23,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:23,882 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] [2023-11-06 22:41:23,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:41:23,883 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:23,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:23,884 INFO L85 PathProgramCache]: Analyzing trace with hash 478401083, now seen corresponding path program 1 times [2023-11-06 22:41:23,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:23,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388403555] [2023-11-06 22:41:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:24,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:24,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388403555] [2023-11-06 22:41:24,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388403555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:24,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:24,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:24,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907972423] [2023-11-06 22:41:24,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:24,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:24,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:24,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:24,181 INFO L87 Difference]: Start difference. First operand 8428 states and 13468 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:25,141 INFO L93 Difference]: Finished difference Result 16787 states and 26844 transitions. [2023-11-06 22:41:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-11-06 22:41:25,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:25,171 INFO L225 Difference]: With dead ends: 16787 [2023-11-06 22:41:25,171 INFO L226 Difference]: Without dead ends: 8430 [2023-11-06 22:41:25,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:25,183 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 71 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:25,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 604 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8430 states. [2023-11-06 22:41:25,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8430 to 8428. [2023-11-06 22:41:25,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 1.5833629998813339) internal successors, (13343), 8427 states have internal predecessors, (13343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:26,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 13343 transitions. [2023-11-06 22:41:26,017 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 13343 transitions. Word has length 74 [2023-11-06 22:41:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:26,018 INFO L495 AbstractCegarLoop]: Abstraction has 8428 states and 13343 transitions. [2023-11-06 22:41:26,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:26,019 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 13343 transitions. [2023-11-06 22:41:26,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:41:26,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:26,020 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] [2023-11-06 22:41:26,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:41:26,020 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:26,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:26,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1246891745, now seen corresponding path program 1 times [2023-11-06 22:41:26,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:26,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584363107] [2023-11-06 22:41:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:26,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:26,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:26,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584363107] [2023-11-06 22:41:26,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584363107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:26,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:26,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:26,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051335355] [2023-11-06 22:41:26,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:26,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:26,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:26,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:26,289 INFO L87 Difference]: Start difference. First operand 8428 states and 13343 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:27,825 INFO L93 Difference]: Finished difference Result 24145 states and 38378 transitions. [2023-11-06 22:41:27,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:41:27,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-11-06 22:41:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:27,869 INFO L225 Difference]: With dead ends: 24145 [2023-11-06 22:41:27,870 INFO L226 Difference]: Without dead ends: 15788 [2023-11-06 22:41:27,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:41:27,881 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 69 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:27,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 616 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:27,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15788 states. [2023-11-06 22:41:29,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15788 to 15786. [2023-11-06 22:41:29,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15786 states, 15785 states have (on average 1.5671840354767184) internal successors, (24738), 15785 states have internal predecessors, (24738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15786 states to 15786 states and 24738 transitions. [2023-11-06 22:41:29,266 INFO L78 Accepts]: Start accepts. Automaton has 15786 states and 24738 transitions. Word has length 77 [2023-11-06 22:41:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:29,267 INFO L495 AbstractCegarLoop]: Abstraction has 15786 states and 24738 transitions. [2023-11-06 22:41:29,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 15786 states and 24738 transitions. [2023-11-06 22:41:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 22:41:29,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:29,268 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] [2023-11-06 22:41:29,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:41:29,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:29,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash -427514140, now seen corresponding path program 1 times [2023-11-06 22:41:29,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:29,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795901715] [2023-11-06 22:41:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:29,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:29,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795901715] [2023-11-06 22:41:29,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795901715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:29,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:29,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:41:29,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129145828] [2023-11-06 22:41:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:29,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:41:29,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:41:29,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:41:29,572 INFO L87 Difference]: Start difference. First operand 15786 states and 24738 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:31,305 INFO L93 Difference]: Finished difference Result 25439 states and 39739 transitions. [2023-11-06 22:41:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:41:31,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-06 22:41:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:31,380 INFO L225 Difference]: With dead ends: 25439 [2023-11-06 22:41:31,381 INFO L226 Difference]: Without dead ends: 25437 [2023-11-06 22:41:31,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:31,388 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 74 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:31,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 758 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25437 states. [2023-11-06 22:41:33,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25437 to 16872. [2023-11-06 22:41:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16872 states, 16871 states have (on average 1.5301404777428724) internal successors, (25815), 16871 states have internal predecessors, (25815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16872 states to 16872 states and 25815 transitions. [2023-11-06 22:41:33,333 INFO L78 Accepts]: Start accepts. Automaton has 16872 states and 25815 transitions. Word has length 78 [2023-11-06 22:41:33,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:33,334 INFO L495 AbstractCegarLoop]: Abstraction has 16872 states and 25815 transitions. [2023-11-06 22:41:33,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 16872 states and 25815 transitions. [2023-11-06 22:41:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:41:33,339 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:33,339 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:33,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:41:33,340 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:33,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1568556927, now seen corresponding path program 1 times [2023-11-06 22:41:33,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:33,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801619468] [2023-11-06 22:41:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:33,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:33,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:33,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801619468] [2023-11-06 22:41:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801619468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:33,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:33,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502619984] [2023-11-06 22:41:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:33,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:33,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:33,433 INFO L87 Difference]: Start difference. First operand 16872 states and 25815 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:36,089 INFO L93 Difference]: Finished difference Result 50355 states and 76975 transitions. [2023-11-06 22:41:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:36,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-11-06 22:41:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:36,169 INFO L225 Difference]: With dead ends: 50355 [2023-11-06 22:41:36,170 INFO L226 Difference]: Without dead ends: 33550 [2023-11-06 22:41:36,190 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 [2023-11-06 22:41:36,191 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 111 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:36,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 411 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:36,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33550 states. [2023-11-06 22:41:39,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33550 to 33548. [2023-11-06 22:41:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33548 states, 33547 states have (on average 1.5150982204071899) internal successors, (50827), 33547 states have internal predecessors, (50827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33548 states to 33548 states and 50827 transitions. [2023-11-06 22:41:39,606 INFO L78 Accepts]: Start accepts. Automaton has 33548 states and 50827 transitions. Word has length 103 [2023-11-06 22:41:39,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:39,607 INFO L495 AbstractCegarLoop]: Abstraction has 33548 states and 50827 transitions. [2023-11-06 22:41:39,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 33548 states and 50827 transitions. [2023-11-06 22:41:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:41:39,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:39,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:39,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:41:39,614 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:39,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:39,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1611929700, now seen corresponding path program 1 times [2023-11-06 22:41:39,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:39,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89318544] [2023-11-06 22:41:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:39,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:41:39,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:39,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89318544] [2023-11-06 22:41:39,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89318544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:39,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:39,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:39,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867857957] [2023-11-06 22:41:39,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:39,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:39,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:39,741 INFO L87 Difference]: Start difference. First operand 33548 states and 50827 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:45,133 INFO L93 Difference]: Finished difference Result 100168 states and 151615 transitions. [2023-11-06 22:41:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:45,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 103 [2023-11-06 22:41:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:45,298 INFO L225 Difference]: With dead ends: 100168 [2023-11-06 22:41:45,298 INFO L226 Difference]: Without dead ends: 66721 [2023-11-06 22:41:45,339 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 [2023-11-06 22:41:45,340 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 96 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:45,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 386 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66721 states. [2023-11-06 22:41:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66721 to 66719. [2023-11-06 22:41:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66719 states, 66718 states have (on average 1.49991006924668) internal successors, (100071), 66718 states have internal predecessors, (100071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66719 states to 66719 states and 100071 transitions. [2023-11-06 22:41:51,225 INFO L78 Accepts]: Start accepts. Automaton has 66719 states and 100071 transitions. Word has length 103 [2023-11-06 22:41:51,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:51,226 INFO L495 AbstractCegarLoop]: Abstraction has 66719 states and 100071 transitions. [2023-11-06 22:41:51,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand 66719 states and 100071 transitions. [2023-11-06 22:41:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:41:51,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:51,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:51,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:41:51,236 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:51,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:51,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1885516983, now seen corresponding path program 1 times [2023-11-06 22:41:51,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679241895] [2023-11-06 22:41:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 22:41:51,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:51,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679241895] [2023-11-06 22:41:51,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679241895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:51,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:51,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:51,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242573218] [2023-11-06 22:41:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:51,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:51,537 INFO L87 Difference]: Start difference. First operand 66719 states and 100071 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:02,294 INFO L93 Difference]: Finished difference Result 199271 states and 298596 transitions. [2023-11-06 22:42:02,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:42:02,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 103 [2023-11-06 22:42:02,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:02,773 INFO L225 Difference]: With dead ends: 199271 [2023-11-06 22:42:02,774 INFO L226 Difference]: Without dead ends: 132729 [2023-11-06 22:42:02,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:42:02,896 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 110 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:02,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 401 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:42:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132729 states.