./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 404ac2bd3423bef5ce605181ef24be34b1a7af016e0b24dd5c9fcdb327055474 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:49,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:49,311 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:48:49,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:49,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:49,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:49,367 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:49,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:49,369 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:49,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:49,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:49,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:49,372 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:49,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:49,378 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:48:49,379 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:49,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:49,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:48:49,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:49,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:48:49,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:48:49,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:49,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:49,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:49,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:49,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:49,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:49,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:49,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:48:49,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:49,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:49,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:49,389 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:48:49,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:49,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:49,389 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:49,390 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_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 404ac2bd3423bef5ce605181ef24be34b1a7af016e0b24dd5c9fcdb327055474 [2023-11-19 07:48:49,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:49,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:49,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:49,745 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:49,746 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:49,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p3.c [2023-11-19 07:48:52,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:53,399 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:53,400 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p3.c [2023-11-19 07:48:53,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/data/7464c3c7a/7d3d0182ed364190b5f0d005e5ee3508/FLAG1e389ae76 [2023-11-19 07:48:53,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/data/7464c3c7a/7d3d0182ed364190b5f0d005e5ee3508 [2023-11-19 07:48:53,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:53,446 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:53,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:53,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:53,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:53,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f43bb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:53, skipping insertion in model container [2023-11-19 07:48:53,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:53" (1/1) ... [2023-11-19 07:48:53,549 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:53,791 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_b2e96ea7-c510-468a-8f0a-907245338462/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p3.c[1258,1271] [2023-11-19 07:48:54,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:54,383 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:54,397 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_b2e96ea7-c510-468a-8f0a-907245338462/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_bpbs_p3.c[1258,1271] [2023-11-19 07:48:54,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:54,672 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:54,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54 WrapperNode [2023-11-19 07:48:54,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:54,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:54,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:54,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:54,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:54,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:55,399 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4991 [2023-11-19 07:48:55,405 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:55,407 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:55,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:55,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:55,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:55,514 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:55,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:55,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:55,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:55,920 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:56,000 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:56,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:56,142 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:56,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:56,144 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:56,144 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:56,145 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (1/1) ... [2023-11-19 07:48:56,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:56,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:56,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:56,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2e96ea7-c510-468a-8f0a-907245338462/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:56,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:56,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:56,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:56,790 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:56,792 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:00,736 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:00,760 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:00,760 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:49:00,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:00 BoogieIcfgContainer [2023-11-19 07:49:00,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:00,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:00,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:00,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:00,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:53" (1/3) ... [2023-11-19 07:49:00,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702bf80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:00, skipping insertion in model container [2023-11-19 07:49:00,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:54" (2/3) ... [2023-11-19 07:49:00,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702bf80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:00, skipping insertion in model container [2023-11-19 07:49:00,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:00" (3/3) ... [2023-11-19 07:49:00,790 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_bpbs_p3.c [2023-11-19 07:49:00,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:00,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:49:00,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:00,908 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ab87adf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:00,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:49:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 824 states, 822 states have (on average 1.6642335766423357) internal successors, (1368), 823 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-19 07:49:00,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:00,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:00,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:00,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:00,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1392998561, now seen corresponding path program 1 times [2023-11-19 07:49:00,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647991468] [2023-11-19 07:49:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:00,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:02,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:02,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647991468] [2023-11-19 07:49:02,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647991468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:02,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:02,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:02,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069011547] [2023-11-19 07:49:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:02,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:02,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:02,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:02,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:02,970 INFO L87 Difference]: Start difference. First operand has 824 states, 822 states have (on average 1.6642335766423357) internal successors, (1368), 823 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:03,129 INFO L93 Difference]: Finished difference Result 1542 states and 2564 transitions. [2023-11-19 07:49:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:49:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 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 169 [2023-11-19 07:49:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:03,160 INFO L225 Difference]: With dead ends: 1542 [2023-11-19 07:49:03,161 INFO L226 Difference]: Without dead ends: 822 [2023-11-19 07:49:03,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:03,174 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 1 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4074 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:03,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4074 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-11-19 07:49:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2023-11-19 07:49:03,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.661388550548112) internal successors, (1364), 821 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1364 transitions. [2023-11-19 07:49:03,291 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1364 transitions. Word has length 169 [2023-11-19 07:49:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:03,295 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1364 transitions. [2023-11-19 07:49:03,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:03,296 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1364 transitions. [2023-11-19 07:49:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-19 07:49:03,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:03,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:03,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:03,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:03,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:03,315 INFO L85 PathProgramCache]: Analyzing trace with hash -231496917, now seen corresponding path program 1 times [2023-11-19 07:49:03,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:03,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428937318] [2023-11-19 07:49:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:03,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:04,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:04,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428937318] [2023-11-19 07:49:04,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428937318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:04,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:04,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102501619] [2023-11-19 07:49:04,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:04,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:04,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:04,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:04,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:04,109 INFO L87 Difference]: Start difference. First operand 822 states and 1364 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:04,183 INFO L93 Difference]: Finished difference Result 1543 states and 2560 transitions. [2023-11-19 07:49:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:49:04,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2023-11-19 07:49:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:04,193 INFO L225 Difference]: With dead ends: 1543 [2023-11-19 07:49:04,193 INFO L226 Difference]: Without dead ends: 825 [2023-11-19 07:49:04,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:04,203 INFO L413 NwaCegarLoop]: 1360 mSDtfsCounter, 1 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4071 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:04,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4071 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2023-11-19 07:49:04,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 824. [2023-11-19 07:49:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 1.6597812879708385) internal successors, (1366), 823 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1366 transitions. [2023-11-19 07:49:04,232 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1366 transitions. Word has length 170 [2023-11-19 07:49:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:04,233 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1366 transitions. [2023-11-19 07:49:04,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1366 transitions. [2023-11-19 07:49:04,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-19 07:49:04,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:04,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:04,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:49:04,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:04,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:04,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1201311223, now seen corresponding path program 1 times [2023-11-19 07:49:04,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:04,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072992317] [2023-11-19 07:49:04,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:04,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:05,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:05,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072992317] [2023-11-19 07:49:05,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072992317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:05,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:05,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:05,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699950272] [2023-11-19 07:49:05,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:05,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:05,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:05,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:05,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:05,858 INFO L87 Difference]: Start difference. First operand 824 states and 1366 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:06,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:06,049 INFO L93 Difference]: Finished difference Result 2272 states and 3766 transitions. [2023-11-19 07:49:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-11-19 07:49:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:06,060 INFO L225 Difference]: With dead ends: 2272 [2023-11-19 07:49:06,060 INFO L226 Difference]: Without dead ends: 1552 [2023-11-19 07:49:06,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:06,063 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 2380 mSDsluCounter, 4097 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 5483 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:06,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 5483 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2023-11-19 07:49:06,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 829. [2023-11-19 07:49:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 828 states have (on average 1.6582125603864735) internal successors, (1373), 828 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1373 transitions. [2023-11-19 07:49:06,093 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1373 transitions. Word has length 171 [2023-11-19 07:49:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:06,094 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1373 transitions. [2023-11-19 07:49:06,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1373 transitions. [2023-11-19 07:49:06,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-19 07:49:06,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:06,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:06,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:49:06,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:06,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:06,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1142099099, now seen corresponding path program 1 times [2023-11-19 07:49:06,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:06,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96778647] [2023-11-19 07:49:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:06,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:08,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:08,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96778647] [2023-11-19 07:49:08,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96778647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:08,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:08,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:49:08,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405358718] [2023-11-19 07:49:08,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:08,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:49:08,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:08,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:49:08,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:49:08,333 INFO L87 Difference]: Start difference. First operand 829 states and 1373 transitions. Second operand has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:09,424 INFO L93 Difference]: Finished difference Result 4505 states and 7455 transitions. [2023-11-19 07:49:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:49:09,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2023-11-19 07:49:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:09,446 INFO L225 Difference]: With dead ends: 4505 [2023-11-19 07:49:09,446 INFO L226 Difference]: Without dead ends: 3780 [2023-11-19 07:49:09,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2023-11-19 07:49:09,451 INFO L413 NwaCegarLoop]: 2557 mSDtfsCounter, 8384 mSDsluCounter, 16774 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8384 SdHoareTripleChecker+Valid, 19331 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:09,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8384 Valid, 19331 Invalid, 187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:49:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3780 states. [2023-11-19 07:49:09,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3780 to 845. [2023-11-19 07:49:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 1.6563981042654028) internal successors, (1398), 844 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1398 transitions. [2023-11-19 07:49:09,495 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1398 transitions. Word has length 172 [2023-11-19 07:49:09,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:09,495 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1398 transitions. [2023-11-19 07:49:09,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.2) internal successors, (172), 10 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:09,496 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1398 transitions. [2023-11-19 07:49:09,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-19 07:49:09,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:09,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:09,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:49:09,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:09,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:09,500 INFO L85 PathProgramCache]: Analyzing trace with hash 147405401, now seen corresponding path program 1 times [2023-11-19 07:49:09,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:09,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473630060] [2023-11-19 07:49:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:09,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:10,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473630060] [2023-11-19 07:49:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473630060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:10,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:10,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449307664] [2023-11-19 07:49:10,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:10,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:10,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:10,644 INFO L87 Difference]: Start difference. First operand 845 states and 1398 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:10,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:10,829 INFO L93 Difference]: Finished difference Result 2331 states and 3856 transitions. [2023-11-19 07:49:10,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:10,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2023-11-19 07:49:10,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:10,841 INFO L225 Difference]: With dead ends: 2331 [2023-11-19 07:49:10,841 INFO L226 Difference]: Without dead ends: 1590 [2023-11-19 07:49:10,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:10,845 INFO L413 NwaCegarLoop]: 1411 mSDtfsCounter, 2380 mSDsluCounter, 4122 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 5533 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:10,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 5533 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2023-11-19 07:49:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 850. [2023-11-19 07:49:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 1.6537102473498233) internal successors, (1404), 849 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:10,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1404 transitions. [2023-11-19 07:49:10,877 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1404 transitions. Word has length 172 [2023-11-19 07:49:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:10,878 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1404 transitions. [2023-11-19 07:49:10,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:10,879 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1404 transitions. [2023-11-19 07:49:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-19 07:49:10,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:10,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:10,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:49:10,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:10,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:10,883 INFO L85 PathProgramCache]: Analyzing trace with hash -662184201, now seen corresponding path program 1 times [2023-11-19 07:49:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:10,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441824346] [2023-11-19 07:49:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:10,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:12,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:12,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441824346] [2023-11-19 07:49:12,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441824346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:12,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:12,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:12,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953925774] [2023-11-19 07:49:12,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:12,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:12,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:12,234 INFO L87 Difference]: Start difference. First operand 850 states and 1404 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:12,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:12,452 INFO L93 Difference]: Finished difference Result 2348 states and 3874 transitions. [2023-11-19 07:49:12,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:12,453 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-11-19 07:49:12,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:12,463 INFO L225 Difference]: With dead ends: 2348 [2023-11-19 07:49:12,463 INFO L226 Difference]: Without dead ends: 1602 [2023-11-19 07:49:12,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:12,469 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 3590 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 4105 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:12,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3590 Valid, 4105 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2023-11-19 07:49:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 858. [2023-11-19 07:49:12,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 857 states have (on average 1.6487747957993) internal successors, (1413), 857 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1413 transitions. [2023-11-19 07:49:12,511 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1413 transitions. Word has length 173 [2023-11-19 07:49:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:12,512 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1413 transitions. [2023-11-19 07:49:12,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:12,513 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1413 transitions. [2023-11-19 07:49:12,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-19 07:49:12,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:12,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:12,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:49:12,517 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:12,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:12,517 INFO L85 PathProgramCache]: Analyzing trace with hash 719957125, now seen corresponding path program 1 times [2023-11-19 07:49:12,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:12,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357739198] [2023-11-19 07:49:12,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:12,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:12,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:13,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:13,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:13,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357739198] [2023-11-19 07:49:13,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357739198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:13,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:13,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:13,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791245383] [2023-11-19 07:49:13,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:13,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:13,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:13,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:13,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:13,057 INFO L87 Difference]: Start difference. First operand 858 states and 1413 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:13,159 INFO L93 Difference]: Finished difference Result 2362 states and 3886 transitions. [2023-11-19 07:49:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-11-19 07:49:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:13,171 INFO L225 Difference]: With dead ends: 2362 [2023-11-19 07:49:13,171 INFO L226 Difference]: Without dead ends: 1608 [2023-11-19 07:49:13,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:13,176 INFO L413 NwaCegarLoop]: 1405 mSDtfsCounter, 1185 mSDsluCounter, 3938 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 5343 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:13,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 5343 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2023-11-19 07:49:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 862. [2023-11-19 07:49:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 1.645760743321719) internal successors, (1417), 861 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1417 transitions. [2023-11-19 07:49:13,209 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1417 transitions. Word has length 173 [2023-11-19 07:49:13,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:13,209 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1417 transitions. [2023-11-19 07:49:13,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1417 transitions. [2023-11-19 07:49:13,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-19 07:49:13,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:13,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:13,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:49:13,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:13,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2023015867, now seen corresponding path program 1 times [2023-11-19 07:49:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:13,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077374152] [2023-11-19 07:49:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:13,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:14,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:14,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077374152] [2023-11-19 07:49:14,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077374152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:14,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:14,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:14,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034937589] [2023-11-19 07:49:14,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:14,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:14,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:14,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:14,537 INFO L87 Difference]: Start difference. First operand 862 states and 1417 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:14,701 INFO L93 Difference]: Finished difference Result 2386 states and 3919 transitions. [2023-11-19 07:49:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:14,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2023-11-19 07:49:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:14,712 INFO L225 Difference]: With dead ends: 2386 [2023-11-19 07:49:14,712 INFO L226 Difference]: Without dead ends: 1628 [2023-11-19 07:49:14,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:14,715 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 2380 mSDsluCounter, 4152 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2380 SdHoareTripleChecker+Valid, 5593 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:14,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2380 Valid, 5593 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:14,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2023-11-19 07:49:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 867. [2023-11-19 07:49:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 1.6443418013856812) internal successors, (1424), 866 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1424 transitions. [2023-11-19 07:49:14,752 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1424 transitions. Word has length 173 [2023-11-19 07:49:14,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:14,753 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1424 transitions. [2023-11-19 07:49:14,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:14,753 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1424 transitions. [2023-11-19 07:49:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-19 07:49:14,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:14,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:14,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:49:14,757 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:14,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2061479989, now seen corresponding path program 1 times [2023-11-19 07:49:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:14,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427602888] [2023-11-19 07:49:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:16,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:16,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427602888] [2023-11-19 07:49:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427602888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:16,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:16,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:49:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642357975] [2023-11-19 07:49:16,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:16,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:49:16,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:49:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:16,625 INFO L87 Difference]: Start difference. First operand 867 states and 1424 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:17,145 INFO L93 Difference]: Finished difference Result 3164 states and 5190 transitions. [2023-11-19 07:49:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:49:17,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2023-11-19 07:49:17,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:17,159 INFO L225 Difference]: With dead ends: 3164 [2023-11-19 07:49:17,159 INFO L226 Difference]: Without dead ends: 2401 [2023-11-19 07:49:17,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:49:17,163 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 4808 mSDsluCounter, 5379 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4808 SdHoareTripleChecker+Valid, 6825 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:17,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4808 Valid, 6825 Invalid, 166 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:49:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2023-11-19 07:49:17,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 872. [2023-11-19 07:49:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.6417910447761195) internal successors, (1430), 871 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1430 transitions. [2023-11-19 07:49:17,200 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1430 transitions. Word has length 174 [2023-11-19 07:49:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:17,200 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1430 transitions. [2023-11-19 07:49:17,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1430 transitions. [2023-11-19 07:49:17,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 07:49:17,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:17,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:49:17,204 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:17,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2005117079, now seen corresponding path program 1 times [2023-11-19 07:49:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242590134] [2023-11-19 07:49:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:18,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:18,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242590134] [2023-11-19 07:49:18,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242590134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:18,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:18,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:49:18,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480843565] [2023-11-19 07:49:18,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:18,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:49:18,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:18,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:49:18,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:18,850 INFO L87 Difference]: Start difference. First operand 872 states and 1430 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 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) [2023-11-19 07:49:19,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:19,373 INFO L93 Difference]: Finished difference Result 3182 states and 5212 transitions. [2023-11-19 07:49:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:49:19,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 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) Word has length 175 [2023-11-19 07:49:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:19,396 INFO L225 Difference]: With dead ends: 3182 [2023-11-19 07:49:19,396 INFO L226 Difference]: Without dead ends: 2414 [2023-11-19 07:49:19,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:49:19,399 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 6679 mSDsluCounter, 5978 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6679 SdHoareTripleChecker+Valid, 7532 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:19,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6679 Valid, 7532 Invalid, 202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:49:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2023-11-19 07:49:19,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 878. [2023-11-19 07:49:19,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 877 states have (on average 1.6385404789053593) internal successors, (1437), 877 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1437 transitions. [2023-11-19 07:49:19,449 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1437 transitions. Word has length 175 [2023-11-19 07:49:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:19,450 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1437 transitions. [2023-11-19 07:49:19,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 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) [2023-11-19 07:49:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1437 transitions. [2023-11-19 07:49:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 07:49:19,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:19,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:19,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:49:19,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:19,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:19,455 INFO L85 PathProgramCache]: Analyzing trace with hash -514842855, now seen corresponding path program 1 times [2023-11-19 07:49:19,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:19,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281937386] [2023-11-19 07:49:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:19,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:21,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281937386] [2023-11-19 07:49:21,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281937386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:21,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:21,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:21,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572932854] [2023-11-19 07:49:21,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:21,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:21,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:21,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:21,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:21,022 INFO L87 Difference]: Start difference. First operand 878 states and 1437 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-19 07:49:21,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:21,286 INFO L93 Difference]: Finished difference Result 2430 states and 3971 transitions. [2023-11-19 07:49:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:21,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) Word has length 175 [2023-11-19 07:49:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:21,298 INFO L225 Difference]: With dead ends: 2430 [2023-11-19 07:49:21,298 INFO L226 Difference]: Without dead ends: 1656 [2023-11-19 07:49:21,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:21,301 INFO L413 NwaCegarLoop]: 1365 mSDtfsCounter, 3626 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3626 SdHoareTripleChecker+Valid, 4056 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:21,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3626 Valid, 4056 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:49:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2023-11-19 07:49:21,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 883. [2023-11-19 07:49:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.6360544217687074) internal successors, (1443), 882 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1443 transitions. [2023-11-19 07:49:21,337 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1443 transitions. Word has length 175 [2023-11-19 07:49:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:21,338 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1443 transitions. [2023-11-19 07:49:21,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 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) [2023-11-19 07:49:21,338 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1443 transitions. [2023-11-19 07:49:21,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-19 07:49:21,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:21,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:21,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:49:21,342 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:21,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:21,345 INFO L85 PathProgramCache]: Analyzing trace with hash 403261515, now seen corresponding path program 1 times [2023-11-19 07:49:21,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:21,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578539156] [2023-11-19 07:49:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:21,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:21,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:21,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578539156] [2023-11-19 07:49:21,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578539156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:21,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:21,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:21,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379133644] [2023-11-19 07:49:21,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:21,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:21,893 INFO L87 Difference]: Start difference. First operand 883 states and 1443 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 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) [2023-11-19 07:49:21,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:21,985 INFO L93 Difference]: Finished difference Result 2435 states and 3974 transitions. [2023-11-19 07:49:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:21,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 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) Word has length 175 [2023-11-19 07:49:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:21,996 INFO L225 Difference]: With dead ends: 2435 [2023-11-19 07:49:21,997 INFO L226 Difference]: Without dead ends: 1656 [2023-11-19 07:49:21,998 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 [2023-11-19 07:49:21,999 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 1185 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 4109 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:22,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 4109 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2023-11-19 07:49:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 885. [2023-11-19 07:49:22,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 1.6346153846153846) internal successors, (1445), 884 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:22,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1445 transitions. [2023-11-19 07:49:22,043 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1445 transitions. Word has length 175 [2023-11-19 07:49:22,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:22,043 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1445 transitions. [2023-11-19 07:49:22,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 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) [2023-11-19 07:49:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1445 transitions. [2023-11-19 07:49:22,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:49:22,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:22,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:22,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:49:22,048 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:22,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:22,048 INFO L85 PathProgramCache]: Analyzing trace with hash -228454253, now seen corresponding path program 1 times [2023-11-19 07:49:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:22,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932702089] [2023-11-19 07:49:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:23,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:23,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932702089] [2023-11-19 07:49:23,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932702089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:23,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:23,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:49:23,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377264011] [2023-11-19 07:49:23,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:23,120 INFO L87 Difference]: Start difference. First operand 885 states and 1445 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:23,728 INFO L93 Difference]: Finished difference Result 4834 states and 7874 transitions. [2023-11-19 07:49:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:49:23,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2023-11-19 07:49:23,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:23,751 INFO L225 Difference]: With dead ends: 4834 [2023-11-19 07:49:23,751 INFO L226 Difference]: Without dead ends: 4053 [2023-11-19 07:49:23,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:49:23,755 INFO L413 NwaCegarLoop]: 2616 mSDtfsCounter, 8312 mSDsluCounter, 10665 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8312 SdHoareTripleChecker+Valid, 13281 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:23,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8312 Valid, 13281 Invalid, 100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4053 states. [2023-11-19 07:49:23,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4053 to 907. [2023-11-19 07:49:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 906 states have (on average 1.6324503311258278) internal successors, (1479), 906 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1479 transitions. [2023-11-19 07:49:23,804 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1479 transitions. Word has length 176 [2023-11-19 07:49:23,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:23,805 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1479 transitions. [2023-11-19 07:49:23,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1479 transitions. [2023-11-19 07:49:23,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:49:23,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:23,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:23,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:49:23,809 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:23,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1444607979, now seen corresponding path program 1 times [2023-11-19 07:49:23,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:23,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460027307] [2023-11-19 07:49:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:25,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:25,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460027307] [2023-11-19 07:49:25,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460027307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:25,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:25,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:25,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054422620] [2023-11-19 07:49:25,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:25,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:25,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:25,182 INFO L87 Difference]: Start difference. First operand 907 states and 1479 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:25,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:25,409 INFO L93 Difference]: Finished difference Result 2521 states and 4101 transitions. [2023-11-19 07:49:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:25,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2023-11-19 07:49:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:25,416 INFO L225 Difference]: With dead ends: 2521 [2023-11-19 07:49:25,416 INFO L226 Difference]: Without dead ends: 1718 [2023-11-19 07:49:25,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:25,419 INFO L413 NwaCegarLoop]: 1418 mSDtfsCounter, 3546 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3546 SdHoareTripleChecker+Valid, 4163 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:25,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3546 Valid, 4163 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2023-11-19 07:49:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 917. [2023-11-19 07:49:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 916 states have (on average 1.6277292576419213) internal successors, (1491), 916 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1491 transitions. [2023-11-19 07:49:25,455 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1491 transitions. Word has length 176 [2023-11-19 07:49:25,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:25,455 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1491 transitions. [2023-11-19 07:49:25,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1491 transitions. [2023-11-19 07:49:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:49:25,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:25,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:25,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:49:25,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:25,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:25,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1322021431, now seen corresponding path program 1 times [2023-11-19 07:49:25,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:25,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899796856] [2023-11-19 07:49:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:25,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:26,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:26,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899796856] [2023-11-19 07:49:26,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899796856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:26,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328253656] [2023-11-19 07:49:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:26,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:26,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:26,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:26,014 INFO L87 Difference]: Start difference. First operand 917 states and 1491 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:26,125 INFO L93 Difference]: Finished difference Result 2531 states and 4107 transitions. [2023-11-19 07:49:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:26,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2023-11-19 07:49:26,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:26,132 INFO L225 Difference]: With dead ends: 2531 [2023-11-19 07:49:26,132 INFO L226 Difference]: Without dead ends: 1718 [2023-11-19 07:49:26,136 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 [2023-11-19 07:49:26,137 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1185 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:26,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 4219 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:26,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2023-11-19 07:49:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 921. [2023-11-19 07:49:26,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 1.625) internal successors, (1495), 920 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:26,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1495 transitions. [2023-11-19 07:49:26,184 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1495 transitions. Word has length 176 [2023-11-19 07:49:26,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:26,184 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 1495 transitions. [2023-11-19 07:49:26,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1495 transitions. [2023-11-19 07:49:26,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:49:26,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:26,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:26,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:49:26,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:26,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:26,190 INFO L85 PathProgramCache]: Analyzing trace with hash 610579409, now seen corresponding path program 1 times [2023-11-19 07:49:26,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:26,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563742897] [2023-11-19 07:49:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:26,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563742897] [2023-11-19 07:49:28,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563742897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:28,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:28,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:49:28,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162095063] [2023-11-19 07:49:28,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:28,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:49:28,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:49:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:49:28,157 INFO L87 Difference]: Start difference. First operand 921 states and 1495 transitions. Second operand has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:30,186 INFO L93 Difference]: Finished difference Result 7108 states and 11567 transitions. [2023-11-19 07:49:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-19 07:49:30,187 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2023-11-19 07:49:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:30,198 INFO L225 Difference]: With dead ends: 7108 [2023-11-19 07:49:30,198 INFO L226 Difference]: Without dead ends: 6291 [2023-11-19 07:49:30,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=529, Invalid=1921, Unknown=0, NotChecked=0, Total=2450 [2023-11-19 07:49:30,204 INFO L413 NwaCegarLoop]: 2541 mSDtfsCounter, 15536 mSDsluCounter, 24140 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15536 SdHoareTripleChecker+Valid, 26681 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:30,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15536 Valid, 26681 Invalid, 338 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:49:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2023-11-19 07:49:30,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 945. [2023-11-19 07:49:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 1.61864406779661) internal successors, (1528), 944 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:30,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1528 transitions. [2023-11-19 07:49:30,268 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1528 transitions. Word has length 176 [2023-11-19 07:49:30,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:30,269 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1528 transitions. [2023-11-19 07:49:30,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.666666666666666) internal successors, (176), 12 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:30,270 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1528 transitions. [2023-11-19 07:49:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:49:30,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:30,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:30,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:49:30,273 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:30,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash -53181807, now seen corresponding path program 1 times [2023-11-19 07:49:30,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:30,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382201529] [2023-11-19 07:49:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:31,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:31,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382201529] [2023-11-19 07:49:31,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382201529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:31,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:31,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:49:31,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402503079] [2023-11-19 07:49:31,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:31,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:31,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:31,374 INFO L87 Difference]: Start difference. First operand 945 states and 1528 transitions. Second operand has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:32,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:32,153 INFO L93 Difference]: Finished difference Result 2712 states and 4381 transitions. [2023-11-19 07:49:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:32,154 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 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 176 [2023-11-19 07:49:32,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:32,158 INFO L225 Difference]: With dead ends: 2712 [2023-11-19 07:49:32,158 INFO L226 Difference]: Without dead ends: 1871 [2023-11-19 07:49:32,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:32,161 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 1253 mSDsluCounter, 4916 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 6271 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:32,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 6271 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:49:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2023-11-19 07:49:32,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1108. [2023-11-19 07:49:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 1.6124661246612466) internal successors, (1785), 1107 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1785 transitions. [2023-11-19 07:49:32,206 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1785 transitions. Word has length 176 [2023-11-19 07:49:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:32,207 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1785 transitions. [2023-11-19 07:49:32,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.333333333333332) internal successors, (176), 6 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:32,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1785 transitions. [2023-11-19 07:49:32,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-19 07:49:32,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:32,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:32,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:49:32,212 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:32,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:32,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1271674387, now seen corresponding path program 1 times [2023-11-19 07:49:32,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:32,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495880627] [2023-11-19 07:49:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:32,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat