./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/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_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/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 32bit --witnessprinter.graph.data.programhash 92be10af768295be2ee9c176bac2a7de85c1afeb202e4b441d20022190d8e93f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:34,206 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:34,329 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:49:34,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:34,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:34,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:34,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:34,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:34,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:34,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:34,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:34,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:34,387 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:34,389 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:34,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:34,390 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:34,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:34,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:34,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:34,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:34,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:34,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:34,396 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:34,396 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:34,397 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:34,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:34,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:34,399 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:34,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:34,400 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:34,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:34,401 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:34,402 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:34,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:34,402 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:34,402 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:34,403 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:34,403 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:34,403 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:34,403 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_2fb23313-4898-4c59-b4e5-aebfed8b6846/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92be10af768295be2ee9c176bac2a7de85c1afeb202e4b441d20022190d8e93f [2023-11-19 07:49:34,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:34,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:34,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:34,789 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:34,790 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:34,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2023-11-19 07:49:37,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:38,116 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:38,117 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2023-11-19 07:49:38,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/data/de5e1a39b/7a23ef44f7f94850a109f4259992d370/FLAGddb998402 [2023-11-19 07:49:38,148 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/data/de5e1a39b/7a23ef44f7f94850a109f4259992d370 [2023-11-19 07:49:38,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:38,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:38,154 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:38,155 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:38,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:38,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d0f337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38, skipping insertion in model container [2023-11-19 07:49:38,163 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,197 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:38,476 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c[6043,6056] [2023-11-19 07:49:38,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:38,493 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:38,554 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_2fb23313-4898-4c59-b4e5-aebfed8b6846/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c[6043,6056] [2023-11-19 07:49:38,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:38,571 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:38,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38 WrapperNode [2023-11-19 07:49:38,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:38,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:38,574 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:38,574 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:38,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,621 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 219 [2023-11-19 07:49:38,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:38,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:38,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:38,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:38,648 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,662 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:38,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:38,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:38,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:38,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (1/1) ... [2023-11-19 07:49:38,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:38,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:38,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:38,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:38,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:38,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:38,974 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:38,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:39,492 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:39,503 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:39,503 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:49:39,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:39 BoogieIcfgContainer [2023-11-19 07:49:39,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:39,512 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:39,512 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:39,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:39,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:38" (1/3) ... [2023-11-19 07:49:39,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb5fc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:39, skipping insertion in model container [2023-11-19 07:49:39,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:38" (2/3) ... [2023-11-19 07:49:39,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb5fc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:39, skipping insertion in model container [2023-11-19 07:49:39,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:39" (3/3) ... [2023-11-19 07:49:39,522 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c [2023-11-19 07:49:39,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:39,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:49:39,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:39,625 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;@1d50f77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:39,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:49:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 57 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:49:39,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:39,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:39,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:39,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1507300432, now seen corresponding path program 1 times [2023-11-19 07:49:39,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:39,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161684599] [2023-11-19 07:49:39,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:39,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:39,861 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 07:49:39,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:39,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161684599] [2023-11-19 07:49:39,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161684599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:39,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:39,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216833710] [2023-11-19 07:49:39,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:39,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:49:39,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:39,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:49:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:49:39,907 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 57 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:39,930 INFO L93 Difference]: Finished difference Result 91 states and 149 transitions. [2023-11-19 07:49:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:49:39,932 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 07:49:39,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:39,942 INFO L225 Difference]: With dead ends: 91 [2023-11-19 07:49:39,943 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 07:49:39,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:49:39,950 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:39,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 07:49:39,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-19 07:49:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 07:49:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 88 transitions. [2023-11-19 07:49:39,994 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 88 transitions. Word has length 19 [2023-11-19 07:49:39,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:39,995 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 88 transitions. [2023-11-19 07:49:39,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 88 transitions. [2023-11-19 07:49:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 07:49:39,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:39,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:39,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:49:39,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:40,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:40,002 INFO L85 PathProgramCache]: Analyzing trace with hash 496183182, now seen corresponding path program 1 times [2023-11-19 07:49:40,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:40,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399177868] [2023-11-19 07:49:40,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:40,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:40,330 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 07:49:40,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399177868] [2023-11-19 07:49:40,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399177868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:40,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:40,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:40,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017389712] [2023-11-19 07:49:40,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:40,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:40,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:40,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:40,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:40,335 INFO L87 Difference]: Start difference. First operand 54 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:40,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:40,430 INFO L93 Difference]: Finished difference Result 90 states and 142 transitions. [2023-11-19 07:49:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:40,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-19 07:49:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:40,460 INFO L225 Difference]: With dead ends: 90 [2023-11-19 07:49:40,460 INFO L226 Difference]: Without dead ends: 54 [2023-11-19 07:49:40,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:40,462 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 2 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:40,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 323 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:40,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-19 07:49:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-11-19 07:49:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-19 07:49:40,475 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 19 [2023-11-19 07:49:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:40,475 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-19 07:49:40,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:40,475 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2023-11-19 07:49:40,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:49:40,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:40,482 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] [2023-11-19 07:49:40,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:49:40,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:40,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2010748053, now seen corresponding path program 1 times [2023-11-19 07:49:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:40,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143377360] [2023-11-19 07:49:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:40,715 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 07:49:40,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143377360] [2023-11-19 07:49:40,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143377360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:40,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:40,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:40,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139463701] [2023-11-19 07:49:40,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:40,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:40,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:40,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:40,719 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 07:49:40,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:40,847 INFO L93 Difference]: Finished difference Result 246 states and 372 transitions. [2023-11-19 07:49:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-19 07:49:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:40,851 INFO L225 Difference]: With dead ends: 246 [2023-11-19 07:49:40,851 INFO L226 Difference]: Without dead ends: 214 [2023-11-19 07:49:40,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:40,853 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 327 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:40,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 350 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:49:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-19 07:49:40,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 84. [2023-11-19 07:49:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 83 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2023-11-19 07:49:40,872 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 34 [2023-11-19 07:49:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:40,872 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2023-11-19 07:49:40,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 07:49:40,873 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2023-11-19 07:49:40,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:49:40,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:40,875 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] [2023-11-19 07:49:40,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:49:40,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:40,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:40,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1009296933, now seen corresponding path program 1 times [2023-11-19 07:49:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:40,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743360379] [2023-11-19 07:49:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:40,982 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 07:49:40,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:40,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743360379] [2023-11-19 07:49:40,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743360379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:40,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:40,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:40,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61946747] [2023-11-19 07:49:40,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:40,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:40,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:40,989 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 07:49:41,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:41,029 INFO L93 Difference]: Finished difference Result 197 states and 294 transitions. [2023-11-19 07:49:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:41,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-19 07:49:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:41,035 INFO L225 Difference]: With dead ends: 197 [2023-11-19 07:49:41,035 INFO L226 Difference]: Without dead ends: 135 [2023-11-19 07:49:41,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:41,042 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:41,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 111 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:41,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-19 07:49:41,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2023-11-19 07:49:41,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4538461538461538) internal successors, (189), 130 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 07:49:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 189 transitions. [2023-11-19 07:49:41,070 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 189 transitions. Word has length 36 [2023-11-19 07:49:41,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:41,071 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 189 transitions. [2023-11-19 07:49:41,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 07:49:41,071 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 189 transitions. [2023-11-19 07:49:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:49:41,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:41,073 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] [2023-11-19 07:49:41,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:49:41,074 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:41,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:41,074 INFO L85 PathProgramCache]: Analyzing trace with hash -942803421, now seen corresponding path program 1 times [2023-11-19 07:49:41,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:41,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137986212] [2023-11-19 07:49:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:41,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:41,427 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 07:49:41,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:41,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137986212] [2023-11-19 07:49:41,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137986212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:41,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:41,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707774387] [2023-11-19 07:49:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:41,433 INFO L87 Difference]: Start difference. First operand 131 states and 189 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 07:49:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:41,513 INFO L93 Difference]: Finished difference Result 242 states and 357 transitions. [2023-11-19 07:49:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:41,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-19 07:49:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:41,516 INFO L225 Difference]: With dead ends: 242 [2023-11-19 07:49:41,516 INFO L226 Difference]: Without dead ends: 133 [2023-11-19 07:49:41,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:41,523 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 74 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:41,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 163 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:41,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-19 07:49:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2023-11-19 07:49:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4384615384615385) internal successors, (187), 130 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 07:49:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 187 transitions. [2023-11-19 07:49:41,548 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 187 transitions. Word has length 36 [2023-11-19 07:49:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:41,549 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 187 transitions. [2023-11-19 07:49:41,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 07:49:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 187 transitions. [2023-11-19 07:49:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:49:41,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:41,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:41,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:49:41,556 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:41,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:41,557 INFO L85 PathProgramCache]: Analyzing trace with hash 423141804, now seen corresponding path program 1 times [2023-11-19 07:49:41,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:41,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781582956] [2023-11-19 07:49:41,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:41,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:41,883 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 07:49:41,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:41,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781582956] [2023-11-19 07:49:41,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781582956] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:41,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:41,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:49:41,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282374823] [2023-11-19 07:49:41,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:41,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:41,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:41,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:41,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:41,888 INFO L87 Difference]: Start difference. First operand 131 states and 187 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:42,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:42,001 INFO L93 Difference]: Finished difference Result 207 states and 303 transitions. [2023-11-19 07:49:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:49:42,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-19 07:49:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:42,006 INFO L225 Difference]: With dead ends: 207 [2023-11-19 07:49:42,006 INFO L226 Difference]: Without dead ends: 205 [2023-11-19 07:49:42,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:49:42,009 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 97 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:42,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 571 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-19 07:49:42,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 137. [2023-11-19 07:49:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.411764705882353) internal successors, (192), 136 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 07:49:42,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 192 transitions. [2023-11-19 07:49:42,036 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 192 transitions. Word has length 37 [2023-11-19 07:49:42,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:42,037 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 192 transitions. [2023-11-19 07:49:42,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:42,039 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 192 transitions. [2023-11-19 07:49:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 07:49:42,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:42,050 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] [2023-11-19 07:49:42,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:49:42,050 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:42,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,051 INFO L85 PathProgramCache]: Analyzing trace with hash -107409885, now seen corresponding path program 1 times [2023-11-19 07:49:42,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619337866] [2023-11-19 07:49:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:42,138 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 07:49:42,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:42,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619337866] [2023-11-19 07:49:42,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619337866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:42,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:42,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433486485] [2023-11-19 07:49:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:42,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:42,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:42,143 INFO L87 Difference]: Start difference. First operand 137 states and 192 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 07:49:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:42,163 INFO L93 Difference]: Finished difference Result 351 states and 504 transitions. [2023-11-19 07:49:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:42,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-11-19 07:49:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:42,166 INFO L225 Difference]: With dead ends: 351 [2023-11-19 07:49:42,166 INFO L226 Difference]: Without dead ends: 236 [2023-11-19 07:49:42,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:42,168 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:42,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 154 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:42,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-19 07:49:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2023-11-19 07:49:42,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.4120171673819744) internal successors, (329), 233 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 07:49:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 329 transitions. [2023-11-19 07:49:42,193 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 329 transitions. Word has length 38 [2023-11-19 07:49:42,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:42,194 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 329 transitions. [2023-11-19 07:49:42,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 07:49:42,194 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 329 transitions. [2023-11-19 07:49:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 07:49:42,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:42,201 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] [2023-11-19 07:49:42,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:49:42,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:42,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1673522979, now seen corresponding path program 1 times [2023-11-19 07:49:42,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285852363] [2023-11-19 07:49:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:42,249 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 07:49:42,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:42,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285852363] [2023-11-19 07:49:42,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285852363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:42,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:42,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:42,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816729250] [2023-11-19 07:49:42,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:42,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:42,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:42,251 INFO L87 Difference]: Start difference. First operand 234 states and 329 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 07:49:42,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:42,276 INFO L93 Difference]: Finished difference Result 626 states and 887 transitions. [2023-11-19 07:49:42,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:42,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-11-19 07:49:42,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:42,279 INFO L225 Difference]: With dead ends: 626 [2023-11-19 07:49:42,279 INFO L226 Difference]: Without dead ends: 414 [2023-11-19 07:49:42,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:42,281 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:42,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:42,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2023-11-19 07:49:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 412. [2023-11-19 07:49:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.389294403892944) internal successors, (571), 411 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 07:49:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 571 transitions. [2023-11-19 07:49:42,303 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 571 transitions. Word has length 38 [2023-11-19 07:49:42,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:42,303 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 571 transitions. [2023-11-19 07:49:42,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 07:49:42,304 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 571 transitions. [2023-11-19 07:49:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 07:49:42,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:42,304 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] [2023-11-19 07:49:42,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:49:42,305 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:42,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash 913154302, now seen corresponding path program 1 times [2023-11-19 07:49:42,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810839908] [2023-11-19 07:49:42,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:42,356 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 07:49:42,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:42,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810839908] [2023-11-19 07:49:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810839908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:42,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:42,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920264534] [2023-11-19 07:49:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:42,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:42,359 INFO L87 Difference]: Start difference. First operand 412 states and 571 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 07:49:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:42,404 INFO L93 Difference]: Finished difference Result 835 states and 1177 transitions. [2023-11-19 07:49:42,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:42,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-11-19 07:49:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:42,408 INFO L225 Difference]: With dead ends: 835 [2023-11-19 07:49:42,408 INFO L226 Difference]: Without dead ends: 600 [2023-11-19 07:49:42,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:42,410 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 37 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:42,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 155 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2023-11-19 07:49:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 598. [2023-11-19 07:49:42,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.3819095477386936) internal successors, (825), 597 states have internal predecessors, (825), 0 states have call successors, (0), 0 states 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 07:49:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 825 transitions. [2023-11-19 07:49:42,439 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 825 transitions. Word has length 40 [2023-11-19 07:49:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:42,440 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 825 transitions. [2023-11-19 07:49:42,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 07:49:42,440 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 825 transitions. [2023-11-19 07:49:42,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:49:42,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:42,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:42,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:49:42,441 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:42,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2071314416, now seen corresponding path program 1 times [2023-11-19 07:49:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571693575] [2023-11-19 07:49:42,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:42,562 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:49:42,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571693575] [2023-11-19 07:49:42,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571693575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:42,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:42,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:42,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020201793] [2023-11-19 07:49:42,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:42,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:42,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:42,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:42,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:42,565 INFO L87 Difference]: Start difference. First operand 598 states and 825 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 07:49:42,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:42,712 INFO L93 Difference]: Finished difference Result 2454 states and 3405 transitions. [2023-11-19 07:49:42,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:42,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 53 [2023-11-19 07:49:42,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:42,728 INFO L225 Difference]: With dead ends: 2454 [2023-11-19 07:49:42,728 INFO L226 Difference]: Without dead ends: 1880 [2023-11-19 07:49:42,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:42,730 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 172 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:42,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 293 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:42,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2023-11-19 07:49:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1170. [2023-11-19 07:49:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 1.3798118049615056) internal successors, (1613), 1169 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states 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 07:49:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1613 transitions. [2023-11-19 07:49:42,802 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1613 transitions. Word has length 53 [2023-11-19 07:49:42,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:42,802 INFO L495 AbstractCegarLoop]: Abstraction has 1170 states and 1613 transitions. [2023-11-19 07:49:42,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 07:49:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1613 transitions. [2023-11-19 07:49:42,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:49:42,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:42,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:42,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:49:42,804 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:42,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,805 INFO L85 PathProgramCache]: Analyzing trace with hash -442720016, now seen corresponding path program 1 times [2023-11-19 07:49:42,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336851321] [2023-11-19 07:49:42,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:42,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:49:42,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:42,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336851321] [2023-11-19 07:49:42,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336851321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:42,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:42,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871333232] [2023-11-19 07:49:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:42,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:42,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:42,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:42,921 INFO L87 Difference]: Start difference. First operand 1170 states and 1613 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 07:49:43,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:43,075 INFO L93 Difference]: Finished difference Result 3026 states and 4193 transitions. [2023-11-19 07:49:43,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:43,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 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 53 [2023-11-19 07:49:43,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:43,090 INFO L225 Difference]: With dead ends: 3026 [2023-11-19 07:49:43,090 INFO L226 Difference]: Without dead ends: 2452 [2023-11-19 07:49:43,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:43,092 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 181 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:43,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 270 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2023-11-19 07:49:43,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2030. [2023-11-19 07:49:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2029 states have (on average 1.3725973385904386) internal successors, (2785), 2029 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states 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 07:49:43,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2785 transitions. [2023-11-19 07:49:43,209 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2785 transitions. Word has length 53 [2023-11-19 07:49:43,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:43,210 INFO L495 AbstractCegarLoop]: Abstraction has 2030 states and 2785 transitions. [2023-11-19 07:49:43,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 07:49:43,210 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2785 transitions. [2023-11-19 07:49:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 07:49:43,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:43,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:43,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:49:43,212 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:43,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash 614088040, now seen corresponding path program 1 times [2023-11-19 07:49:43,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:43,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512360332] [2023-11-19 07:49:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:43,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:43,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:43,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512360332] [2023-11-19 07:49:43,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512360332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:43,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:43,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819596747] [2023-11-19 07:49:43,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:43,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:43,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:43,348 INFO L87 Difference]: Start difference. First operand 2030 states and 2785 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 07:49:43,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:43,424 INFO L93 Difference]: Finished difference Result 3506 states and 4848 transitions. [2023-11-19 07:49:43,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:43,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-19 07:49:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:43,433 INFO L225 Difference]: With dead ends: 3506 [2023-11-19 07:49:43,433 INFO L226 Difference]: Without dead ends: 1500 [2023-11-19 07:49:43,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:43,437 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 34 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:43,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:43,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2023-11-19 07:49:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1498. [2023-11-19 07:49:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 1.3740814963259853) internal successors, (2057), 1497 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states 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 07:49:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2057 transitions. [2023-11-19 07:49:43,514 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2057 transitions. Word has length 55 [2023-11-19 07:49:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:43,514 INFO L495 AbstractCegarLoop]: Abstraction has 1498 states and 2057 transitions. [2023-11-19 07:49:43,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 07:49:43,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2057 transitions. [2023-11-19 07:49:43,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 07:49:43,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:43,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:43,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:49:43,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:43,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1276832885, now seen corresponding path program 1 times [2023-11-19 07:49:43,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:43,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198890559] [2023-11-19 07:49:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:43,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:49:43,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:43,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198890559] [2023-11-19 07:49:43,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198890559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:43,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:43,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:43,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957744960] [2023-11-19 07:49:43,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:43,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:43,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:43,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:43,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:43,648 INFO L87 Difference]: Start difference. First operand 1498 states and 2057 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 07:49:43,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:43,795 INFO L93 Difference]: Finished difference Result 2754 states and 3813 transitions. [2023-11-19 07:49:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:43,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 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 55 [2023-11-19 07:49:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:43,808 INFO L225 Difference]: With dead ends: 2754 [2023-11-19 07:49:43,808 INFO L226 Difference]: Without dead ends: 2336 [2023-11-19 07:49:43,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:43,811 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 171 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:43,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 304 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2023-11-19 07:49:43,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1914. [2023-11-19 07:49:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 1.3763721902770518) internal successors, (2633), 1913 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states 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 07:49:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2633 transitions. [2023-11-19 07:49:43,914 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2633 transitions. Word has length 55 [2023-11-19 07:49:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:43,914 INFO L495 AbstractCegarLoop]: Abstraction has 1914 states and 2633 transitions. [2023-11-19 07:49:43,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 07:49:43,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2633 transitions. [2023-11-19 07:49:43,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 07:49:43,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:43,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:43,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:49:43,916 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:43,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash -935959243, now seen corresponding path program 1 times [2023-11-19 07:49:43,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:43,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005958743] [2023-11-19 07:49:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:44,010 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:44,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005958743] [2023-11-19 07:49:44,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005958743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:44,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:44,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:44,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027618363] [2023-11-19 07:49:44,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:44,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:44,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:44,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:44,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:44,013 INFO L87 Difference]: Start difference. First operand 1914 states and 2633 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 07:49:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:44,086 INFO L93 Difference]: Finished difference Result 2854 states and 3931 transitions. [2023-11-19 07:49:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-11-19 07:49:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:44,092 INFO L225 Difference]: With dead ends: 2854 [2023-11-19 07:49:44,092 INFO L226 Difference]: Without dead ends: 980 [2023-11-19 07:49:44,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:44,095 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 29 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:44,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 138 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:44,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2023-11-19 07:49:44,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 978. [2023-11-19 07:49:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3500511770726715) internal successors, (1319), 977 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states 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 07:49:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1319 transitions. [2023-11-19 07:49:44,147 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1319 transitions. Word has length 56 [2023-11-19 07:49:44,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:44,147 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1319 transitions. [2023-11-19 07:49:44,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 07:49:44,147 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1319 transitions. [2023-11-19 07:49:44,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:49:44,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:44,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:44,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:49:44,149 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:44,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:44,150 INFO L85 PathProgramCache]: Analyzing trace with hash 735785191, now seen corresponding path program 1 times [2023-11-19 07:49:44,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:44,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131235220] [2023-11-19 07:49:44,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:44,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:44,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:44,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131235220] [2023-11-19 07:49:44,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131235220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:44,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:44,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:44,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844179077] [2023-11-19 07:49:44,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:44,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:49:44,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:44,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:49:44,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:44,243 INFO L87 Difference]: Start difference. First operand 978 states and 1319 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:44,274 INFO L93 Difference]: Finished difference Result 1450 states and 1960 transitions. [2023-11-19 07:49:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:49:44,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-11-19 07:49:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:44,278 INFO L225 Difference]: With dead ends: 1450 [2023-11-19 07:49:44,278 INFO L226 Difference]: Without dead ends: 512 [2023-11-19 07:49:44,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:49:44,280 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 26 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:44,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 123 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-19 07:49:44,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 510. [2023-11-19 07:49:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.3182711198428292) internal successors, (671), 509 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 07:49:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 671 transitions. [2023-11-19 07:49:44,310 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 671 transitions. Word has length 58 [2023-11-19 07:49:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:44,310 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 671 transitions. [2023-11-19 07:49:44,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:49:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 671 transitions. [2023-11-19 07:49:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:49:44,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:44,311 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:44,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:49:44,312 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:44,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:44,313 INFO L85 PathProgramCache]: Analyzing trace with hash -967290087, now seen corresponding path program 1 times [2023-11-19 07:49:44,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:44,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709533991] [2023-11-19 07:49:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:44,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:44,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:44,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:44,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709533991] [2023-11-19 07:49:44,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709533991] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:44,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227550742] [2023-11-19 07:49:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:44,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:44,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:44,924 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:44,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:49:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:45,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:49:45,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:49:45,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:49:45,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227550742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:45,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:49:45,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2023-11-19 07:49:45,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599382337] [2023-11-19 07:49:45,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:45,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:49:45,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:45,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:49:45,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:49:45,489 INFO L87 Difference]: Start difference. First operand 510 states and 671 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 07:49:46,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:46,964 INFO L93 Difference]: Finished difference Result 2649 states and 3475 transitions. [2023-11-19 07:49:46,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-19 07:49:46,965 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 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 60 [2023-11-19 07:49:46,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:46,976 INFO L225 Difference]: With dead ends: 2649 [2023-11-19 07:49:46,976 INFO L226 Difference]: Without dead ends: 2179 [2023-11-19 07:49:46,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=359, Invalid=1363, Unknown=0, NotChecked=0, Total=1722 [2023-11-19 07:49:46,979 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1136 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:46,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 523 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:49:46,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2023-11-19 07:49:47,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 2113. [2023-11-19 07:49:47,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 1.2471590909090908) internal successors, (2634), 2112 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states 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 07:49:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2634 transitions. [2023-11-19 07:49:47,118 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2634 transitions. Word has length 60 [2023-11-19 07:49:47,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:47,118 INFO L495 AbstractCegarLoop]: Abstraction has 2113 states and 2634 transitions. [2023-11-19 07:49:47,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 07:49:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2634 transitions. [2023-11-19 07:49:47,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 07:49:47,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:47,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:47,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:49:47,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:49:47,336 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:47,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash 97531615, now seen corresponding path program 1 times [2023-11-19 07:49:47,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:47,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102358377] [2023-11-19 07:49:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:47,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:47,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:47,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102358377] [2023-11-19 07:49:47,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102358377] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:47,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474000859] [2023-11-19 07:49:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:47,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:47,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:47,890 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:47,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:49:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:47,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:49:47,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:48,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:49,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474000859] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:49,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:49:49,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-11-19 07:49:49,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330196259] [2023-11-19 07:49:49,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:49,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 07:49:49,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 07:49:49,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:49:49,353 INFO L87 Difference]: Start difference. First operand 2113 states and 2634 transitions. Second operand has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 07:49:49,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:49,995 INFO L93 Difference]: Finished difference Result 6143 states and 7695 transitions. [2023-11-19 07:49:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:49:49,996 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 0 states have call successors, (0), 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 61 [2023-11-19 07:49:49,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:50,018 INFO L225 Difference]: With dead ends: 6143 [2023-11-19 07:49:50,018 INFO L226 Difference]: Without dead ends: 4305 [2023-11-19 07:49:50,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2023-11-19 07:49:50,023 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 680 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:50,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 373 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:49:50,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2023-11-19 07:49:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 4115. [2023-11-19 07:49:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4115 states, 4114 states have (on average 1.2340787554691297) internal successors, (5077), 4114 states have internal predecessors, (5077), 0 states have call successors, (0), 0 states 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 07:49:50,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4115 states to 4115 states and 5077 transitions. [2023-11-19 07:49:50,338 INFO L78 Accepts]: Start accepts. Automaton has 4115 states and 5077 transitions. Word has length 61 [2023-11-19 07:49:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:50,339 INFO L495 AbstractCegarLoop]: Abstraction has 4115 states and 5077 transitions. [2023-11-19 07:49:50,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.190476190476191) internal successors, (130), 20 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 07:49:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4115 states and 5077 transitions. [2023-11-19 07:49:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-19 07:49:50,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:50,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:50,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:50,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:49:50,556 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:50,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash 517708881, now seen corresponding path program 1 times [2023-11-19 07:49:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:50,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303463766] [2023-11-19 07:49:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:50,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:51,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303463766] [2023-11-19 07:49:51,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303463766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:51,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792933504] [2023-11-19 07:49:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:51,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:51,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:51,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fb23313-4898-4c59-b4e5-aebfed8b6846/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:49:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:51,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-19 07:49:51,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:55,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:55,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:50:00,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:50:00,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792933504] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:50:00,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:50:00,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 19, 22] total 45 [2023-11-19 07:50:00,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564344807] [2023-11-19 07:50:00,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:50:00,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-19 07:50:00,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:50:00,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-19 07:50:00,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1663, Unknown=0, NotChecked=0, Total=1980 [2023-11-19 07:50:00,803 INFO L87 Difference]: Start difference. First operand 4115 states and 5077 transitions. Second operand has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)