./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/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_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 722f66c27e0daab44069acf5d7094f3a7f8b832453955e57154e2bc2fe9dd95b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:33:53,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:33:54,056 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:33:54,066 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:33:54,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:33:54,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:33:54,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:33:54,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:33:54,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:33:54,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:33:54,124 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:33:54,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:33:54,125 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:33:54,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:33:54,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:33:54,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:33:54,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:33:54,129 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:33:54,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:33:54,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:33:54,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:33:54,131 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:33:54,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:33:54,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:33:54,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:33:54,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:54,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:33:54,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:33:54,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:33:54,135 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:33:54,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:33:54,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:33:54,137 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:33:54,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:33:54,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:33:54,138 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:33:54,138 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_203bcb62-5991-490c-b1a6-8273f01b37ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 722f66c27e0daab44069acf5d7094f3a7f8b832453955e57154e2bc2fe9dd95b [2023-11-19 07:33:54,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:33:54,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:33:54,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:33:54,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:33:54,504 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:33:54,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c [2023-11-19 07:33:57,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:33:57,895 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:33:57,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c [2023-11-19 07:33:57,917 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/data/90c4dd02e/1f2a83a14dd54a2185775414138997ee/FLAGc10130c69 [2023-11-19 07:33:57,933 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/data/90c4dd02e/1f2a83a14dd54a2185775414138997ee [2023-11-19 07:33:57,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:33:57,937 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:33:57,938 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:57,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:33:57,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:33:57,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601fff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:57, skipping insertion in model container [2023-11-19 07:33:57,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:33:57" (1/1) ... [2023-11-19 07:33:57,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:33:58,132 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_203bcb62-5991-490c-b1a6-8273f01b37ee/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c[1245,1258] [2023-11-19 07:33:58,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:58,216 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:33:58,228 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_203bcb62-5991-490c-b1a6-8273f01b37ee/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c[1245,1258] [2023-11-19 07:33:58,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:33:58,315 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:33:58,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58 WrapperNode [2023-11-19 07:33:58,316 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:33:58,317 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:58,317 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:33:58,317 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:33:58,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,424 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 412 [2023-11-19 07:33:58,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:33:58,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:33:58,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:33:58,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:33:58,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:33:58,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:33:58,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:33:58,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:33:58,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (1/1) ... [2023-11-19 07:33:58,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:33:58,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:58,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:33:58,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:33:58,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:33:58,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:33:58,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:33:58,781 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:33:58,784 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:33:59,588 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:33:59,597 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:33:59,597 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:33:59,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:59 BoogieIcfgContainer [2023-11-19 07:33:59,601 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:33:59,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:33:59,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:33:59,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:33:59,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:33:57" (1/3) ... [2023-11-19 07:33:59,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9f97ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:59, skipping insertion in model container [2023-11-19 07:33:59,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:33:58" (2/3) ... [2023-11-19 07:33:59,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9f97ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:59, skipping insertion in model container [2023-11-19 07:33:59,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:59" (3/3) ... [2023-11-19 07:33:59,614 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal51.c [2023-11-19 07:33:59,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:33:59,638 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:33:59,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:59,719 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;@1b5969f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:59,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:33:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 69 states have (on average 1.6376811594202898) internal successors, (113), 70 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 07:33:59,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:59,735 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] [2023-11-19 07:33:59,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:59,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:59,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1614125398, now seen corresponding path program 1 times [2023-11-19 07:33:59,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:59,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310314640] [2023-11-19 07:33:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:59,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:00,775 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 07:34:00,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:00,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310314640] [2023-11-19 07:34:00,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310314640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:00,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:00,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252123800] [2023-11-19 07:34:00,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:00,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:00,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:00,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:00,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:00,840 INFO L87 Difference]: Start difference. First operand has 71 states, 69 states have (on average 1.6376811594202898) internal successors, (113), 70 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 07:34:00,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:00,907 INFO L93 Difference]: Finished difference Result 126 states and 204 transitions. [2023-11-19 07:34:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:00,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2023-11-19 07:34:00,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:00,924 INFO L225 Difference]: With dead ends: 126 [2023-11-19 07:34:00,924 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 07:34:00,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:00,933 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:00,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 309 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:00,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 07:34:00,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-19 07:34:00,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.6029411764705883) internal successors, (109), 68 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 109 transitions. [2023-11-19 07:34:00,976 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 109 transitions. Word has length 39 [2023-11-19 07:34:00,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:00,977 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 109 transitions. [2023-11-19 07:34:00,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states 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 07:34:00,978 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 109 transitions. [2023-11-19 07:34:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 07:34:00,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:00,980 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 07:34:00,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:34:00,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:00,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1503445366, now seen corresponding path program 1 times [2023-11-19 07:34:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:00,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146642094] [2023-11-19 07:34:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,203 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 07:34:01,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:01,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146642094] [2023-11-19 07:34:01,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146642094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:01,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:01,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:01,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141422217] [2023-11-19 07:34:01,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:01,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:01,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:01,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:01,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:01,208 INFO L87 Difference]: Start difference. First operand 69 states and 109 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 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 07:34:01,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:01,241 INFO L93 Difference]: Finished difference Result 127 states and 200 transitions. [2023-11-19 07:34:01,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:01,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 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 07:34:01,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:01,244 INFO L225 Difference]: With dead ends: 127 [2023-11-19 07:34:01,244 INFO L226 Difference]: Without dead ends: 72 [2023-11-19 07:34:01,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:01,246 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:01,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 306 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-19 07:34:01,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-11-19 07:34:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.5857142857142856) internal successors, (111), 70 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:01,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 111 transitions. [2023-11-19 07:34:01,256 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 111 transitions. Word has length 40 [2023-11-19 07:34:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:01,257 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 111 transitions. [2023-11-19 07:34:01,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 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 07:34:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 111 transitions. [2023-11-19 07:34:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 07:34:01,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:01,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:01,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:34:01,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:01,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:01,260 INFO L85 PathProgramCache]: Analyzing trace with hash -848266172, now seen corresponding path program 1 times [2023-11-19 07:34:01,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:01,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291341741] [2023-11-19 07:34:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:01,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:01,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291341741] [2023-11-19 07:34:01,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291341741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:01,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:01,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:01,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521293256] [2023-11-19 07:34:01,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:01,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:01,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:01,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:01,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:01,628 INFO L87 Difference]: Start difference. First operand 71 states and 111 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 07:34:01,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:01,801 INFO L93 Difference]: Finished difference Result 173 states and 269 transitions. [2023-11-19 07:34:01,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:01,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-11-19 07:34:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:01,803 INFO L225 Difference]: With dead ends: 173 [2023-11-19 07:34:01,804 INFO L226 Difference]: Without dead ends: 71 [2023-11-19 07:34:01,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:01,806 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 44 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:01,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 274 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:01,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-19 07:34:01,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-11-19 07:34:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.5714285714285714) internal successors, (110), 70 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 07:34:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 110 transitions. [2023-11-19 07:34:01,816 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 110 transitions. Word has length 41 [2023-11-19 07:34:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:01,817 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 110 transitions. [2023-11-19 07:34:01,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 07:34:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 110 transitions. [2023-11-19 07:34:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 07:34:01,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:01,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:01,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:34:01,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:01,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2058953114, now seen corresponding path program 1 times [2023-11-19 07:34:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123954316] [2023-11-19 07:34:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:01,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:02,324 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 07:34:02,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:02,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123954316] [2023-11-19 07:34:02,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123954316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:02,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:02,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:34:02,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817584767] [2023-11-19 07:34:02,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:02,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:34:02,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:02,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:34:02,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:02,328 INFO L87 Difference]: Start difference. First operand 71 states and 110 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 07:34:02,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:02,503 INFO L93 Difference]: Finished difference Result 216 states and 336 transitions. [2023-11-19 07:34:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:34:02,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-11-19 07:34:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:02,506 INFO L225 Difference]: With dead ends: 216 [2023-11-19 07:34:02,506 INFO L226 Difference]: Without dead ends: 159 [2023-11-19 07:34:02,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:34:02,509 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 456 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:02,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 443 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-19 07:34:02,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 103. [2023-11-19 07:34:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.5784313725490196) internal successors, (161), 102 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 07:34:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 161 transitions. [2023-11-19 07:34:02,521 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 161 transitions. Word has length 42 [2023-11-19 07:34:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:02,522 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 161 transitions. [2023-11-19 07:34:02,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 07:34:02,523 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 161 transitions. [2023-11-19 07:34:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:34:02,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:02,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:02,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:34:02,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:02,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2098097414, now seen corresponding path program 1 times [2023-11-19 07:34:02,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:02,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631097324] [2023-11-19 07:34:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:02,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:02,887 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 07:34:02,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:02,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631097324] [2023-11-19 07:34:02,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631097324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:02,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:02,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:34:02,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389739519] [2023-11-19 07:34:02,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:02,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:34:02,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:34:02,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:02,891 INFO L87 Difference]: Start difference. First operand 103 states and 161 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 07:34:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:03,190 INFO L93 Difference]: Finished difference Result 266 states and 413 transitions. [2023-11-19 07:34:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:34:03,191 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-19 07:34:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:03,193 INFO L225 Difference]: With dead ends: 266 [2023-11-19 07:34:03,193 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 07:34:03,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:34:03,195 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 731 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:03,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 730 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 07:34:03,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 106. [2023-11-19 07:34:03,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.5714285714285714) internal successors, (165), 105 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 07:34:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 165 transitions. [2023-11-19 07:34:03,207 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 165 transitions. Word has length 43 [2023-11-19 07:34:03,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:03,207 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 165 transitions. [2023-11-19 07:34:03,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 07:34:03,208 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 165 transitions. [2023-11-19 07:34:03,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:34:03,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:03,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:03,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:34:03,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:03,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:03,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1803842872, now seen corresponding path program 1 times [2023-11-19 07:34:03,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:03,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001579013] [2023-11-19 07:34:03,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:03,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:03,778 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 07:34:03,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:03,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001579013] [2023-11-19 07:34:03,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001579013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:03,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:03,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:34:03,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527047776] [2023-11-19 07:34:03,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:03,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:34:03,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:34:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:34:03,782 INFO L87 Difference]: Start difference. First operand 106 states and 165 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 07:34:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:04,304 INFO L93 Difference]: Finished difference Result 267 states and 415 transitions. [2023-11-19 07:34:04,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:34:04,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-19 07:34:04,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:04,307 INFO L225 Difference]: With dead ends: 267 [2023-11-19 07:34:04,307 INFO L226 Difference]: Without dead ends: 210 [2023-11-19 07:34:04,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:34:04,309 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 611 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:04,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 1048 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:34:04,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-19 07:34:04,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 109. [2023-11-19 07:34:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.5648148148148149) internal successors, (169), 108 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:34:04,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 169 transitions. [2023-11-19 07:34:04,323 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 169 transitions. Word has length 43 [2023-11-19 07:34:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:04,324 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 169 transitions. [2023-11-19 07:34:04,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 07:34:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 169 transitions. [2023-11-19 07:34:04,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 07:34:04,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:04,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:04,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:34:04,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:04,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:04,327 INFO L85 PathProgramCache]: Analyzing trace with hash -716117062, now seen corresponding path program 1 times [2023-11-19 07:34:04,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:04,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350680732] [2023-11-19 07:34:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:04,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:04,790 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 07:34:04,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:04,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350680732] [2023-11-19 07:34:04,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350680732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:04,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:04,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:34:04,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338629750] [2023-11-19 07:34:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:04,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:34:04,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:04,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:34:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:04,794 INFO L87 Difference]: Start difference. First operand 109 states and 169 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 07:34:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:04,887 INFO L93 Difference]: Finished difference Result 283 states and 434 transitions. [2023-11-19 07:34:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:34:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-11-19 07:34:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:04,889 INFO L225 Difference]: With dead ends: 283 [2023-11-19 07:34:04,889 INFO L226 Difference]: Without dead ends: 203 [2023-11-19 07:34:04,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:34:04,891 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 324 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:04,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 434 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:04,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-19 07:34:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 119. [2023-11-19 07:34:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.5338983050847457) internal successors, (181), 118 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 07:34:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 181 transitions. [2023-11-19 07:34:04,902 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 181 transitions. Word has length 43 [2023-11-19 07:34:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:04,902 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 181 transitions. [2023-11-19 07:34:04,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 07:34:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 181 transitions. [2023-11-19 07:34:04,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 07:34:04,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:04,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:04,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:34:04,905 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:04,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:04,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1562747842, now seen corresponding path program 1 times [2023-11-19 07:34:04,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:04,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916713708] [2023-11-19 07:34:04,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:04,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,165 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 07:34:05,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:05,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916713708] [2023-11-19 07:34:05,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916713708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:05,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:05,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:05,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362010416] [2023-11-19 07:34:05,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:05,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:05,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:05,169 INFO L87 Difference]: Start difference. First operand 119 states and 181 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 07:34:05,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:05,393 INFO L93 Difference]: Finished difference Result 298 states and 450 transitions. [2023-11-19 07:34:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:05,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-11-19 07:34:05,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:05,396 INFO L225 Difference]: With dead ends: 298 [2023-11-19 07:34:05,396 INFO L226 Difference]: Without dead ends: 213 [2023-11-19 07:34:05,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:05,397 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 245 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:05,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 202 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:34:05,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-19 07:34:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 129. [2023-11-19 07:34:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.5078125) internal successors, (193), 128 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 07:34:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 193 transitions. [2023-11-19 07:34:05,408 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 193 transitions. Word has length 44 [2023-11-19 07:34:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:05,408 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 193 transitions. [2023-11-19 07:34:05,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 07:34:05,409 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 193 transitions. [2023-11-19 07:34:05,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 07:34:05,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:05,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:05,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:34:05,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:05,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:05,411 INFO L85 PathProgramCache]: Analyzing trace with hash -242690492, now seen corresponding path program 1 times [2023-11-19 07:34:05,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:05,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955904562] [2023-11-19 07:34:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:05,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:05,705 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 07:34:05,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:05,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955904562] [2023-11-19 07:34:05,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955904562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:05,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:05,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:05,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805576823] [2023-11-19 07:34:05,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:05,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:05,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:05,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:05,709 INFO L87 Difference]: Start difference. First operand 129 states and 193 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 07:34:05,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:05,814 INFO L93 Difference]: Finished difference Result 210 states and 313 transitions. [2023-11-19 07:34:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:05,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-11-19 07:34:05,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:05,817 INFO L225 Difference]: With dead ends: 210 [2023-11-19 07:34:05,818 INFO L226 Difference]: Without dead ends: 129 [2023-11-19 07:34:05,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:05,819 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 93 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:05,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 132 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-19 07:34:05,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-19 07:34:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4921875) internal successors, (191), 128 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 07:34:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 191 transitions. [2023-11-19 07:34:05,829 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 191 transitions. Word has length 44 [2023-11-19 07:34:05,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:05,829 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 191 transitions. [2023-11-19 07:34:05,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 07:34:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 191 transitions. [2023-11-19 07:34:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 07:34:05,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:05,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:05,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:34:05,831 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:05,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:05,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1504564906, now seen corresponding path program 1 times [2023-11-19 07:34:05,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:05,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10722351] [2023-11-19 07:34:05,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:05,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:06,107 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 07:34:06,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:06,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10722351] [2023-11-19 07:34:06,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10722351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:06,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:06,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:06,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100093190] [2023-11-19 07:34:06,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:06,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:06,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:06,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:06,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:06,110 INFO L87 Difference]: Start difference. First operand 129 states and 191 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 07:34:06,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:06,140 INFO L93 Difference]: Finished difference Result 207 states and 305 transitions. [2023-11-19 07:34:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:06,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2023-11-19 07:34:06,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:06,142 INFO L225 Difference]: With dead ends: 207 [2023-11-19 07:34:06,143 INFO L226 Difference]: Without dead ends: 129 [2023-11-19 07:34:06,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:06,144 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 150 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:06,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 230 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:06,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-19 07:34:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-19 07:34:06,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4765625) internal successors, (189), 128 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 07:34:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 189 transitions. [2023-11-19 07:34:06,152 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 189 transitions. Word has length 45 [2023-11-19 07:34:06,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:06,153 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 189 transitions. [2023-11-19 07:34:06,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 07:34:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 189 transitions. [2023-11-19 07:34:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:34:06,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:06,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:06,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:34:06,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:06,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -657522838, now seen corresponding path program 1 times [2023-11-19 07:34:06,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:06,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693370499] [2023-11-19 07:34:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:06,346 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 07:34:06,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693370499] [2023-11-19 07:34:06,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693370499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:06,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:06,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:06,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657848255] [2023-11-19 07:34:06,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:06,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:06,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:06,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:06,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:06,350 INFO L87 Difference]: Start difference. First operand 129 states and 189 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:06,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:06,439 INFO L93 Difference]: Finished difference Result 290 states and 421 transitions. [2023-11-19 07:34:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:34:06,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-11-19 07:34:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:06,442 INFO L225 Difference]: With dead ends: 290 [2023-11-19 07:34:06,442 INFO L226 Difference]: Without dead ends: 212 [2023-11-19 07:34:06,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:06,443 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 157 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:06,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 459 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-19 07:34:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 135. [2023-11-19 07:34:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.455223880597015) internal successors, (195), 134 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 07:34:06,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 195 transitions. [2023-11-19 07:34:06,453 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 195 transitions. Word has length 46 [2023-11-19 07:34:06,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:06,454 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 195 transitions. [2023-11-19 07:34:06,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 195 transitions. [2023-11-19 07:34:06,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:34:06,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:06,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:06,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:34:06,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:06,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1937386516, now seen corresponding path program 1 times [2023-11-19 07:34:06,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:06,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887516715] [2023-11-19 07:34:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:06,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:06,872 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 07:34:06,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:06,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887516715] [2023-11-19 07:34:06,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887516715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:06,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:06,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:06,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433462571] [2023-11-19 07:34:06,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:06,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:06,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:06,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:06,874 INFO L87 Difference]: Start difference. First operand 135 states and 195 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:07,013 INFO L93 Difference]: Finished difference Result 227 states and 324 transitions. [2023-11-19 07:34:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:07,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-11-19 07:34:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:07,015 INFO L225 Difference]: With dead ends: 227 [2023-11-19 07:34:07,016 INFO L226 Difference]: Without dead ends: 143 [2023-11-19 07:34:07,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:07,019 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 83 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:07,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 186 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:07,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-19 07:34:07,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2023-11-19 07:34:07,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4357142857142857) internal successors, (201), 140 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 07:34:07,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 201 transitions. [2023-11-19 07:34:07,028 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 201 transitions. Word has length 46 [2023-11-19 07:34:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:07,030 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 201 transitions. [2023-11-19 07:34:07,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 201 transitions. [2023-11-19 07:34:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:34:07,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:07,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:07,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:34:07,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:07,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1643299752, now seen corresponding path program 1 times [2023-11-19 07:34:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:07,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234681383] [2023-11-19 07:34:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:07,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:07,492 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 07:34:07,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:07,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234681383] [2023-11-19 07:34:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234681383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:07,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:07,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:34:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771729682] [2023-11-19 07:34:07,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:07,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:34:07,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:07,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:34:07,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:07,496 INFO L87 Difference]: Start difference. First operand 141 states and 201 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:07,623 INFO L93 Difference]: Finished difference Result 242 states and 343 transitions. [2023-11-19 07:34:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:34:07,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-11-19 07:34:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:07,625 INFO L225 Difference]: With dead ends: 242 [2023-11-19 07:34:07,625 INFO L226 Difference]: Without dead ends: 137 [2023-11-19 07:34:07,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:34:07,626 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 93 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:07,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 186 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-19 07:34:07,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-19 07:34:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4338235294117647) internal successors, (195), 136 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 07:34:07,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 195 transitions. [2023-11-19 07:34:07,635 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 195 transitions. Word has length 46 [2023-11-19 07:34:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:07,635 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 195 transitions. [2023-11-19 07:34:07,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 195 transitions. [2023-11-19 07:34:07,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:34:07,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:07,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:07,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:34:07,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:07,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:07,637 INFO L85 PathProgramCache]: Analyzing trace with hash 993278052, now seen corresponding path program 1 times [2023-11-19 07:34:07,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:07,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578339231] [2023-11-19 07:34:07,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:07,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:08,145 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 07:34:08,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:08,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578339231] [2023-11-19 07:34:08,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578339231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:08,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:08,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:34:08,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623996627] [2023-11-19 07:34:08,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:34:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:08,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:34:08,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:08,148 INFO L87 Difference]: Start difference. First operand 137 states and 195 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:08,374 INFO L93 Difference]: Finished difference Result 339 states and 478 transitions. [2023-11-19 07:34:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:34:08,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-11-19 07:34:08,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:08,377 INFO L225 Difference]: With dead ends: 339 [2023-11-19 07:34:08,377 INFO L226 Difference]: Without dead ends: 242 [2023-11-19 07:34:08,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:34:08,378 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 323 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:08,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 590 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:08,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-19 07:34:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 145. [2023-11-19 07:34:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4236111111111112) internal successors, (205), 144 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 07:34:08,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 205 transitions. [2023-11-19 07:34:08,388 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 205 transitions. Word has length 46 [2023-11-19 07:34:08,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:08,389 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 205 transitions. [2023-11-19 07:34:08,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:08,389 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 205 transitions. [2023-11-19 07:34:08,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 07:34:08,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:08,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:08,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:34:08,390 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:08,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1133826662, now seen corresponding path program 1 times [2023-11-19 07:34:08,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:08,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482364004] [2023-11-19 07:34:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:08,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,007 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 07:34:09,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:09,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482364004] [2023-11-19 07:34:09,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482364004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:09,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:09,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:34:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600589002] [2023-11-19 07:34:09,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:09,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:34:09,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:09,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:34:09,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:09,010 INFO L87 Difference]: Start difference. First operand 145 states and 205 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:09,372 INFO L93 Difference]: Finished difference Result 249 states and 350 transitions. [2023-11-19 07:34:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:34:09,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2023-11-19 07:34:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:09,374 INFO L225 Difference]: With dead ends: 249 [2023-11-19 07:34:09,374 INFO L226 Difference]: Without dead ends: 145 [2023-11-19 07:34:09,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:34:09,375 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 176 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:09,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 243 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:34:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-19 07:34:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 133. [2023-11-19 07:34:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 132 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 07:34:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 183 transitions. [2023-11-19 07:34:09,387 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 183 transitions. Word has length 46 [2023-11-19 07:34:09,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:09,388 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 183 transitions. [2023-11-19 07:34:09,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 07:34:09,388 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 183 transitions. [2023-11-19 07:34:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 07:34:09,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:09,389 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:09,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:34:09,389 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:09,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2012702344, now seen corresponding path program 1 times [2023-11-19 07:34:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:09,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116000694] [2023-11-19 07:34:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:09,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:09,750 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 07:34:09,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:09,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116000694] [2023-11-19 07:34:09,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116000694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:09,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:09,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:34:09,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423130108] [2023-11-19 07:34:09,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:09,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:34:09,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:09,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:34:09,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:34:09,753 INFO L87 Difference]: Start difference. First operand 133 states and 183 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 07:34:09,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:09,887 INFO L93 Difference]: Finished difference Result 218 states and 300 transitions. [2023-11-19 07:34:09,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:09,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-11-19 07:34:09,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:09,888 INFO L225 Difference]: With dead ends: 218 [2023-11-19 07:34:09,889 INFO L226 Difference]: Without dead ends: 141 [2023-11-19 07:34:09,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:34:09,890 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 228 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:09,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 448 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:09,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-19 07:34:09,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2023-11-19 07:34:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.375) internal successors, (187), 136 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 07:34:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2023-11-19 07:34:09,898 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 47 [2023-11-19 07:34:09,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:09,899 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2023-11-19 07:34:09,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 07:34:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2023-11-19 07:34:09,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-19 07:34:09,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:09,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:09,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:34:09,900 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:09,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash 732838666, now seen corresponding path program 1 times [2023-11-19 07:34:09,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:09,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17072156] [2023-11-19 07:34:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:09,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:10,553 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 07:34:10,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:10,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17072156] [2023-11-19 07:34:10,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17072156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:10,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:10,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:34:10,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684831193] [2023-11-19 07:34:10,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:10,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:34:10,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:10,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:34:10,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:34:10,557 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 07:34:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:11,023 INFO L93 Difference]: Finished difference Result 216 states and 294 transitions. [2023-11-19 07:34:11,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:34:11,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-11-19 07:34:11,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:11,025 INFO L225 Difference]: With dead ends: 216 [2023-11-19 07:34:11,026 INFO L226 Difference]: Without dead ends: 137 [2023-11-19 07:34:11,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:34:11,026 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 172 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:11,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 311 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:34:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-19 07:34:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 133. [2023-11-19 07:34:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.371212121212121) internal successors, (181), 132 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 07:34:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2023-11-19 07:34:11,036 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 47 [2023-11-19 07:34:11,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:11,036 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2023-11-19 07:34:11,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 07:34:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2023-11-19 07:34:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-19 07:34:11,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:11,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:11,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:34:11,040 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:11,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash 384529972, now seen corresponding path program 1 times [2023-11-19 07:34:11,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:11,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062280995] [2023-11-19 07:34:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:11,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:34:11,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:34:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:34:11,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:34:11,195 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:34:11,196 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 07:34:11,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:34:11,202 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:11,205 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:34:11,246 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-19 07:34:11,246 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-19 07:34:11,247 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-19 07:34:11,247 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-19 07:34:11,248 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-19 07:34:11,248 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-19 07:34:11,248 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-19 07:34:11,249 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-19 07:34:11,250 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated [2023-11-19 07:34:11,251 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated [2023-11-19 07:34:11,252 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet22 could not be translated [2023-11-19 07:34:11,254 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet23 could not be translated [2023-11-19 07:34:11,256 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet24 could not be translated [2023-11-19 07:34:11,257 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet25 could not be translated [2023-11-19 07:34:11,259 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet26 could not be translated [2023-11-19 07:34:11,261 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet27 could not be translated [2023-11-19 07:34:11,264 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet28 could not be translated [2023-11-19 07:34:11,264 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet29 could not be translated [2023-11-19 07:34:11,266 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet30 could not be translated [2023-11-19 07:34:11,269 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet31 could not be translated [2023-11-19 07:34:11,270 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet32 could not be translated [2023-11-19 07:34:11,271 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-19 07:34:11,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:34:11 BoogieIcfgContainer [2023-11-19 07:34:11,287 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:34:11,288 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:34:11,288 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:34:11,288 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:34:11,288 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:59" (3/4) ... [2023-11-19 07:34:11,290 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:34:11,292 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:34:11,292 INFO L158 Benchmark]: Toolchain (without parser) took 13355.60ms. Allocated memory was 157.3MB in the beginning and 234.9MB in the end (delta: 77.6MB). Free memory was 126.6MB in the beginning and 65.6MB in the end (delta: 61.0MB). Peak memory consumption was 140.7MB. Max. memory is 16.1GB. [2023-11-19 07:34:11,293 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 79.0MB in the beginning and 78.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:34:11,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.64ms. Allocated memory is still 157.3MB. Free memory was 126.0MB in the beginning and 110.5MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:34:11,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.98ms. Allocated memory is still 157.3MB. Free memory was 110.5MB in the beginning and 102.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:34:11,294 INFO L158 Benchmark]: Boogie Preprocessor took 124.24ms. Allocated memory is still 157.3MB. Free memory was 102.3MB in the beginning and 98.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:34:11,294 INFO L158 Benchmark]: RCFGBuilder took 1051.00ms. Allocated memory is still 157.3MB. Free memory was 98.7MB in the beginning and 115.8MB in the end (delta: -17.0MB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. [2023-11-19 07:34:11,294 INFO L158 Benchmark]: TraceAbstraction took 11683.48ms. Allocated memory was 157.3MB in the beginning and 234.9MB in the end (delta: 77.6MB). Free memory was 115.7MB in the beginning and 65.6MB in the end (delta: 50.0MB). Peak memory consumption was 127.6MB. Max. memory is 16.1GB. [2023-11-19 07:34:11,295 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 234.9MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:34:11,297 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 121.6MB. Free memory was 79.0MB in the beginning and 78.8MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 377.64ms. Allocated memory is still 157.3MB. Free memory was 126.0MB in the beginning and 110.5MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.98ms. Allocated memory is still 157.3MB. Free memory was 110.5MB in the beginning and 102.3MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 124.24ms. Allocated memory is still 157.3MB. Free memory was 102.3MB in the beginning and 98.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1051.00ms. Allocated memory is still 157.3MB. Free memory was 98.7MB in the beginning and 115.8MB in the end (delta: -17.0MB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11683.48ms. Allocated memory was 157.3MB in the beginning and 234.9MB in the end (delta: 77.6MB). Free memory was 115.7MB in the beginning and 65.6MB in the end (delta: 50.0MB). Peak memory consumption was 127.6MB. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 234.9MB. Free memory is still 65.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet23 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet24 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet25 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet26 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet27 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet28 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet30 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet32 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 123, overapproximation of bitwiseAnd at line 128. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L32] const SORT_27 mask_SORT_27 = (SORT_27)-1 >> (sizeof(SORT_27) * 8 - 2); [L33] const SORT_27 msb_SORT_27 = (SORT_27)1 << (2 - 1); [L35] const SORT_1 var_11 = 0; [L36] const SORT_5 var_15 = 0; [L37] const SORT_5 var_21 = 2; [L38] const SORT_5 var_24 = 1; [L39] const SORT_1 var_41 = 1; [L41] SORT_1 input_2; [L42] SORT_1 input_3; [L43] SORT_1 input_4; [L44] SORT_5 input_6; [L45] SORT_5 input_7; [L46] SORT_1 input_8; [L47] SORT_5 input_9; [L48] SORT_5 input_10; [L50] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, var_11=0, var_15=0, var_21=2, var_24=1, var_41=1] [L50] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L51] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, var_11=0, var_15=0, var_21=2, var_24=1, var_41=1] [L51] SORT_5 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L52] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, var_11=0, var_15=0, var_21=2, var_24=1, var_41=1] [L52] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L53] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, var_11=0, var_15=0, var_21=2, var_24=1, var_41=1] [L53] SORT_5 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L55] SORT_1 init_13_arg_1 = var_11; [L56] state_12 = init_13_arg_1 [L57] SORT_5 init_17_arg_1 = var_15; [L58] state_16 = init_17_arg_1 [L59] SORT_1 init_19_arg_1 = var_11; [L60] state_18 = init_19_arg_1 [L61] SORT_5 init_31_arg_1 = var_15; [L62] state_30 = init_31_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_15=0, var_21=2, var_24=1, var_41=1] [L65] input_2 = __VERIFIER_nondet_uchar() [L66] EXPR input_2 & mask_SORT_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_15=0, var_21=2, var_24=1, var_41=1] [L66] input_2 = input_2 & mask_SORT_1 [L67] input_3 = __VERIFIER_nondet_uchar() [L68] EXPR input_3 & mask_SORT_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_15=0, var_21=2, var_24=1, var_41=1] [L68] input_3 = input_3 & mask_SORT_1 [L69] input_4 = __VERIFIER_nondet_uchar() [L70] input_6 = __VERIFIER_nondet_uchar() [L71] input_7 = __VERIFIER_nondet_uchar() [L72] input_8 = __VERIFIER_nondet_uchar() [L73] input_9 = __VERIFIER_nondet_uchar() [L74] input_10 = __VERIFIER_nondet_uchar() [L77] SORT_1 var_14_arg_0 = state_12; [L78] SORT_1 var_14 = ~var_14_arg_0; [L79] SORT_1 var_20_arg_0 = state_18; [L80] SORT_5 var_20_arg_1 = state_16; [L81] SORT_5 var_20_arg_2 = input_7; [L82] SORT_5 var_20 = var_20_arg_0 ? var_20_arg_1 : var_20_arg_2; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_24=1, var_41=1] [L83] EXPR var_20 & mask_SORT_5 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_24=1, var_41=1] [L83] var_20 = var_20 & mask_SORT_5 [L84] SORT_5 var_25_arg_0 = var_20; [L85] SORT_5 var_25_arg_1 = var_24; [L86] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L87] SORT_1 var_26_arg_0 = var_25; [L88] SORT_1 var_26 = ~var_26_arg_0; [L89] SORT_5 var_22_arg_0 = var_20; [L90] SORT_5 var_22_arg_1 = var_21; [L91] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L92] SORT_1 var_23_arg_0 = var_22; [L93] SORT_1 var_23 = ~var_23_arg_0; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=255, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_41=1] [L94] EXPR var_23 & mask_SORT_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=255, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_41=1] [L94] var_23 = var_23 & mask_SORT_1 [L95] SORT_1 var_28_arg_0 = var_26; [L96] SORT_1 var_28_arg_1 = var_23; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28_arg_0=255, var_28_arg_1=0, var_41=1] [L97] EXPR ((SORT_27)var_28_arg_0 << 1) | var_28_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28_arg_0=255, var_28_arg_1=0, var_41=1] [L97] SORT_27 var_28 = ((SORT_27)var_28_arg_0 << 1) | var_28_arg_1; [L98] EXPR var_28 & mask_SORT_27 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=254, var_28_arg_0=255, var_28_arg_1=0, var_41=1] [L98] var_28 = var_28 & mask_SORT_27 [L99] SORT_27 var_29_arg_0 = var_28; [L100] SORT_1 var_29 = var_29_arg_0 == mask_SORT_27; [L101] SORT_1 var_32_arg_0 = state_18; [L102] SORT_5 var_32_arg_1 = state_30; [L103] SORT_5 var_32_arg_2 = input_7; [L104] SORT_5 var_32 = var_32_arg_0 ? var_32_arg_1 : var_32_arg_2; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_41=1] [L105] EXPR var_32 & mask_SORT_5 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_41=1] [L105] var_32 = var_32 & mask_SORT_5 [L106] SORT_5 var_33_arg_0 = var_32; [L107] SORT_5 var_33_arg_1 = var_21; [L108] SORT_1 var_33 = var_33_arg_0 == var_33_arg_1; [L109] SORT_1 var_34_arg_0 = var_33; [L110] SORT_1 var_34 = ~var_34_arg_0; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=255, var_34_arg_0=0, var_41=1] [L111] EXPR var_34 & mask_SORT_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=255, var_34_arg_0=0, var_41=1] [L111] var_34 = var_34 & mask_SORT_1 [L112] SORT_1 var_35_arg_0 = var_26; [L113] SORT_1 var_35_arg_1 = var_34; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=0, var_34_arg_0=0, var_35_arg_0=255, var_35_arg_1=0, var_41=1] [L114] EXPR ((SORT_27)var_35_arg_0 << 1) | var_35_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=0, var_34_arg_0=0, var_35_arg_0=255, var_35_arg_1=0, var_41=1] [L114] SORT_27 var_35 = ((SORT_27)var_35_arg_0 << 1) | var_35_arg_1; [L115] EXPR var_35 & mask_SORT_27 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=0, var_34_arg_0=0, var_35=254, var_35_arg_0=255, var_35_arg_1=0, var_41=1] [L115] var_35 = var_35 & mask_SORT_27 [L116] SORT_27 var_36_arg_0 = var_35; [L117] SORT_1 var_36 = var_36_arg_0 == mask_SORT_27; [L118] SORT_1 var_37_arg_0 = var_29; [L119] SORT_1 var_37_arg_1 = var_36; [L120] SORT_1 var_37 = var_37_arg_0 == var_37_arg_1; [L121] SORT_1 var_38_arg_0 = var_14; [L122] SORT_1 var_38_arg_1 = var_37; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=0, var_34_arg_0=0, var_35=0, var_35_arg_0=255, var_35_arg_1=0, var_36=0, var_36_arg_0=0, var_37=1, var_37_arg_0=0, var_37_arg_1=0, var_38_arg_0=255, var_38_arg_1=1, var_41=1] [L123] EXPR var_38_arg_0 | var_38_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=0, var_34_arg_0=0, var_35=0, var_35_arg_0=255, var_35_arg_1=0, var_36=0, var_36_arg_0=0, var_37=1, var_37_arg_0=0, var_37_arg_1=0, var_38_arg_0=255, var_38_arg_1=1, var_41=1] [L123] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L124] SORT_1 var_42_arg_0 = var_38; [L125] SORT_1 var_42 = ~var_42_arg_0; [L126] SORT_1 var_43_arg_0 = var_41; [L127] SORT_1 var_43_arg_1 = var_42; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=0, var_34_arg_0=0, var_35=0, var_35_arg_0=255, var_35_arg_1=0, var_36=0, var_36_arg_0=0, var_37=1, var_37_arg_0=0, var_37_arg_1=0, var_38=0, var_38_arg_0=255, var_38_arg_1=1, var_41=1, var_42=255, var_42_arg_0=0, var_43_arg_0=1, var_43_arg_1=255] [L128] EXPR var_43_arg_0 & var_43_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=0, var_34_arg_0=0, var_35=0, var_35_arg_0=255, var_35_arg_1=0, var_36=0, var_36_arg_0=0, var_37=1, var_37_arg_0=0, var_37_arg_1=0, var_38=0, var_38_arg_0=255, var_38_arg_1=1, var_41=1, var_42=255, var_42_arg_0=0, var_43_arg_0=1, var_43_arg_1=255] [L128] SORT_1 var_43 = var_43_arg_0 & var_43_arg_1; [L129] EXPR var_43 & mask_SORT_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_31_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_27=3, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_27=2, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_30=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=2, var_22=0, var_22_arg_0=0, var_22_arg_1=2, var_23=0, var_23_arg_0=0, var_24=1, var_25=0, var_25_arg_0=0, var_25_arg_1=1, var_26=255, var_26_arg_0=0, var_28=2, var_28_arg_0=255, var_28_arg_1=0, var_29=0, var_29_arg_0=2, var_32=0, var_32_arg_0=0, var_32_arg_1=0, var_32_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=2, var_34=0, var_34_arg_0=0, var_35=0, var_35_arg_0=255, var_35_arg_1=0, var_36=0, var_36_arg_0=0, var_37=1, var_37_arg_0=0, var_37_arg_1=0, var_38=0, var_38_arg_0=255, var_38_arg_1=1, var_41=1, var_42=255, var_42_arg_0=0, var_43=1, var_43_arg_0=1, var_43_arg_1=255] [L129] var_43 = var_43 & mask_SORT_1 [L130] SORT_1 bad_44_arg_0 = var_43; [L131] CALL __VERIFIER_assert(!(bad_44_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3888 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3888 mSDsluCounter, 6531 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4701 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1629 IncrementalHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1830 mSDtfsCounter, 1629 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=14, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 625 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 796 NumberOfCodeBlocks, 796 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 731 ConstructedInterpolants, 0 QuantifiedInterpolants, 3512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 07:34:11,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/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_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 722f66c27e0daab44069acf5d7094f3a7f8b832453955e57154e2bc2fe9dd95b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:14,101 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:14,249 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-19 07:34:14,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:14,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:14,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:14,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:14,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:14,311 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:14,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:14,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:14,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:14,319 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:14,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:14,322 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:34:14,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:14,323 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:34:14,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:14,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:34:14,324 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:34:14,325 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 07:34:14,326 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 07:34:14,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:34:14,327 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:14,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:14,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:14,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:14,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:14,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:14,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:14,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:34:14,332 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-19 07:34:14,333 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 07:34:14,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:14,334 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:34:14,334 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:14,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:14,335 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-19 07:34:14,335 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:14,337 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_203bcb62-5991-490c-b1a6-8273f01b37ee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 722f66c27e0daab44069acf5d7094f3a7f8b832453955e57154e2bc2fe9dd95b [2023-11-19 07:34:14,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:14,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:14,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:14,858 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:14,859 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:14,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c [2023-11-19 07:34:18,164 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:18,482 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:18,483 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c [2023-11-19 07:34:18,493 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/data/a479c081f/2e48da51ba8d49f4be705412767522e3/FLAGf28296f3c [2023-11-19 07:34:18,508 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/data/a479c081f/2e48da51ba8d49f4be705412767522e3 [2023-11-19 07:34:18,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:18,513 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:18,515 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:18,515 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:18,520 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:18,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:18" (1/1) ... [2023-11-19 07:34:18,521 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af77881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:18, skipping insertion in model container [2023-11-19 07:34:18,522 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:18" (1/1) ... [2023-11-19 07:34:18,561 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:18,778 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_203bcb62-5991-490c-b1a6-8273f01b37ee/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c[1245,1258] [2023-11-19 07:34:18,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:18,912 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:18,933 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_203bcb62-5991-490c-b1a6-8273f01b37ee/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal51.c[1245,1258] [2023-11-19 07:34:19,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:19,025 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:19,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19 WrapperNode [2023-11-19 07:34:19,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:19,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:19,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:19,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:19,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,085 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 212 [2023-11-19 07:34:19,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:19,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:19,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:19,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:19,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,121 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:19,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:19,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:19,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:19,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (1/1) ... [2023-11-19 07:34:19,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:19,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:19,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:19,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:19,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 07:34:19,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:19,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:19,389 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:19,392 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:19,799 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:19,807 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:19,807 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:34:19,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:19 BoogieIcfgContainer [2023-11-19 07:34:19,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:19,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:19,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:19,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:19,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:18" (1/3) ... [2023-11-19 07:34:19,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503935f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:19, skipping insertion in model container [2023-11-19 07:34:19,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:19" (2/3) ... [2023-11-19 07:34:19,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503935f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:19, skipping insertion in model container [2023-11-19 07:34:19,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:19" (3/3) ... [2023-11-19 07:34:19,830 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal51.c [2023-11-19 07:34:19,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:19,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:34:19,908 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:19,917 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;@3cff5485, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:19,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:34:19,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states 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 07:34:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 07:34:19,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:19,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:34:19,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:19,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:19,941 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-19 07:34:19,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:19,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007660994] [2023-11-19 07:34:19,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:19,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:19,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:19,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:34:19,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 07:34:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:20,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:34:20,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:20,495 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 07:34:20,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:34:20,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007660994] [2023-11-19 07:34:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007660994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:20,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:20,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:34:20,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595318558] [2023-11-19 07:34:20,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:20,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:34:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:20,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:34:20,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:34:20,550 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 07:34:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:20,624 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-19 07:34:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:34:20,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-19 07:34:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:20,634 INFO L225 Difference]: With dead ends: 19 [2023-11-19 07:34:20,635 INFO L226 Difference]: Without dead ends: 10 [2023-11-19 07:34:20,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:34:20,642 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:20,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:34:20,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-19 07:34:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-19 07:34:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 07:34:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-19 07:34:20,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-19 07:34:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:20,678 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-19 07:34:20,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 07:34:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-19 07:34:20,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:34:20,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:20,680 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:34:20,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:20,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:20,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:20,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-19 07:34:20,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:20,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899453081] [2023-11-19 07:34:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:20,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:20,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:20,886 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:34:20,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 07:34:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:21,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-19 07:34:21,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:21,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:21,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:34:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:26,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-19 07:34:26,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899453081] [2023-11-19 07:34:26,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899453081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:34:26,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:34:26,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-19 07:34:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999425387] [2023-11-19 07:34:26,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:34:26,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:34:26,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-19 07:34:26,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:34:26,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:34:26,065 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 07:34:26,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:34:26,251 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-19 07:34:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:34:26,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 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 8 [2023-11-19 07:34:26,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:34:26,253 INFO L225 Difference]: With dead ends: 15 [2023-11-19 07:34:26,253 INFO L226 Difference]: Without dead ends: 13 [2023-11-19 07:34:26,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:34:26,255 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:34:26,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:34:26,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-19 07:34:26,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-19 07:34:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states 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 07:34:26,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-19 07:34:26,260 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2023-11-19 07:34:26,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:34:26,261 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-19 07:34:26,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 07:34:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-19 07:34:26,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 07:34:26,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:34:26,263 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 07:34:26,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:34:26,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:26,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:34:26,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:26,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2023-11-19 07:34:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-19 07:34:26,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037115424] [2023-11-19 07:34:26,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:34:26,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 07:34:26,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat [2023-11-19 07:34:26,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 07:34:26,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_203bcb62-5991-490c-b1a6-8273f01b37ee/bin/uautomizer-verify-uCwYo4JHxu/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 07:34:26,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:34:26,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:34:26,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 116 conjunts are in the unsatisfiable core [2023-11-19 07:34:26,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:34:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:34:29,337 INFO L327 TraceCheckSpWp]: Computing backward predicates...