./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal133.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal133.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ecfcf8fad4ec27f396008c3581b7f4322357696eac8da0b9150f8556c8670180 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:03:40,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:03:40,902 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 23:03:40,912 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:03:40,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:03:40,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:03:40,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:03:40,954 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:03:40,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:03:40,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:03:40,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:03:40,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:03:40,959 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:03:40,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:03:40,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:03:40,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:03:40,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:03:40,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:03:40,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:03:40,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:03:40,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:03:40,971 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:03:40,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:03:40,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:03:40,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:03:40,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:03:40,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:03:40,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:03:40,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:03:40,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:03:40,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:03:40,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:03:40,977 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:03:40,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:03:40,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:03:40,978 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:03:40,978 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_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecfcf8fad4ec27f396008c3581b7f4322357696eac8da0b9150f8556c8670180 [2023-11-06 23:03:41,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:03:41,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:03:41,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:03:41,368 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:03:41,369 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:03:41,371 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal133.c [2023-11-06 23:03:44,431 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:03:45,310 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:03:45,313 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal133.c [2023-11-06 23:03:45,429 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/data/a11edd3c7/4855a09c749c4ed5889a862872657cca/FLAG8aa33229c [2023-11-06 23:03:45,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/data/a11edd3c7/4855a09c749c4ed5889a862872657cca [2023-11-06 23:03:45,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:03:45,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:03:45,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:45,469 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:03:45,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:03:45,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:45" (1/1) ... [2023-11-06 23:03:45,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7011a5c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:45, skipping insertion in model container [2023-11-06 23:03:45,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:45" (1/1) ... [2023-11-06 23:03:45,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:03:46,385 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_aa246724-5c55-4974-874a-829a08f831d0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal133.c[1246,1259] [2023-11-06 23:03:48,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:48,761 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:03:48,776 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_aa246724-5c55-4974-874a-829a08f831d0/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal133.c[1246,1259] [2023-11-06 23:03:50,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:50,311 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:03:50,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50 WrapperNode [2023-11-06 23:03:50,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:50,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:03:50,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:03:50,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:03:50,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:03:51,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:03:56,318 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58242 [2023-11-06 23:03:56,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:03:56,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:03:56,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:03:56,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:03:56,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:03:56,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:03:58,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:03:58,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:03:59,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:04:00,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:04:00,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:04:00,749 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:04:01,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:04:01,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:04:01,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:04:01,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:04:01,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (1/1) ... [2023-11-06 23:04:01,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:04:01,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:01,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:04:01,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:04:01,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:04:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:04:01,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:04:01,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:04:05,504 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:04:05,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:04:46,991 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:04:47,058 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:04:47,059 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:04:47,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:47 BoogieIcfgContainer [2023-11-06 23:04:47,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:04:47,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:04:47,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:04:47,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:04:47,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:03:45" (1/3) ... [2023-11-06 23:04:47,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4067837b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:47, skipping insertion in model container [2023-11-06 23:04:47,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:50" (2/3) ... [2023-11-06 23:04:47,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4067837b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:47, skipping insertion in model container [2023-11-06 23:04:47,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:47" (3/3) ... [2023-11-06 23:04:47,085 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal133.c [2023-11-06 23:04:47,105 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:04:47,106 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:04:47,359 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:04:47,368 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@796bbda0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:04:47,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:04:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 12125 states, 12123 states have (on average 1.66707910583189) internal successors, (20210), 12124 states have internal predecessors, (20210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:47,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2023-11-06 23:04:47,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:47,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:47,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:47,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:47,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1556395081, now seen corresponding path program 1 times [2023-11-06 23:04:47,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:47,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517180517] [2023-11-06 23:04:47,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:47,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:48,179 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:04:48,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727727358] [2023-11-06 23:04:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:48,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:48,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:48,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:04:48,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:04:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:52,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-06 23:04:52,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:04:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:04:55,002 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:04:55,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:55,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517180517] [2023-11-06 23:04:55,003 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:04:55,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727727358] [2023-11-06 23:04:55,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727727358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:55,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:55,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:04:55,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355593176] [2023-11-06 23:04:55,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:55,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:04:55,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:55,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:04:55,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:04:55,073 INFO L87 Difference]: Start difference. First operand has 12125 states, 12123 states have (on average 1.66707910583189) internal successors, (20210), 12124 states have internal predecessors, (20210), 0 states have call successors, (0), 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 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:04:58,522 INFO L93 Difference]: Finished difference Result 23962 states and 39945 transitions. [2023-11-06 23:04:58,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:04:58,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 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 496 [2023-11-06 23:04:58,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:04:58,618 INFO L225 Difference]: With dead ends: 23962 [2023-11-06 23:04:58,618 INFO L226 Difference]: Without dead ends: 12121 [2023-11-06 23:04:58,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:04:58,645 INFO L413 NwaCegarLoop]: 19319 mSDtfsCounter, 19949 mSDsluCounter, 19318 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19949 SdHoareTripleChecker+Valid, 38637 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.6s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:04:58,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19949 Valid, 38637 Invalid, 1760 Unknown, 0 Unchecked, 0.6s Time], IncrementalHoareTripleChecker [1 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 23:04:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12121 states. [2023-11-06 23:04:58,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12121 to 12121. [2023-11-06 23:04:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12121 states, 12120 states have (on average 1.6665841584158416) internal successors, (20199), 12120 states have internal predecessors, (20199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12121 states to 12121 states and 20199 transitions. [2023-11-06 23:04:59,057 INFO L78 Accepts]: Start accepts. Automaton has 12121 states and 20199 transitions. Word has length 496 [2023-11-06 23:04:59,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:04:59,060 INFO L495 AbstractCegarLoop]: Abstraction has 12121 states and 20199 transitions. [2023-11-06 23:04:59,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:04:59,060 INFO L276 IsEmpty]: Start isEmpty. Operand 12121 states and 20199 transitions. [2023-11-06 23:04:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2023-11-06 23:04:59,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:04:59,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:59,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:04:59,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 23:04:59,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:04:59,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash 855093043, now seen corresponding path program 1 times [2023-11-06 23:04:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:59,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285302690] [2023-11-06 23:04:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:59,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:59,645 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:04:59,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505688457] [2023-11-06 23:04:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:59,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:04:59,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:59,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:04:59,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:05:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:03,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 23:05:04,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:05,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:05,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:05,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285302690] [2023-11-06 23:05:05,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:05,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505688457] [2023-11-06 23:05:05,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505688457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:05,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:05:05,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976538910] [2023-11-06 23:05:05,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:05,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:05,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:05,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:05,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:05,746 INFO L87 Difference]: Start difference. First operand 12121 states and 20199 transitions. Second operand has 5 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:09,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:09,941 INFO L93 Difference]: Finished difference Result 23958 states and 39926 transitions. [2023-11-06 23:05:09,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:09,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 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 497 [2023-11-06 23:05:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:10,005 INFO L225 Difference]: With dead ends: 23958 [2023-11-06 23:05:10,006 INFO L226 Difference]: Without dead ends: 12121 [2023-11-06 23:05:10,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:05:10,019 INFO L413 NwaCegarLoop]: 19337 mSDtfsCounter, 19820 mSDsluCounter, 38671 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19820 SdHoareTripleChecker+Valid, 58008 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:10,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19820 Valid, 58008 Invalid, 2580 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [2 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-06 23:05:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12121 states. [2023-11-06 23:05:10,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12121 to 12121. [2023-11-06 23:05:10,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12121 states, 12120 states have (on average 1.6664191419141914) internal successors, (20197), 12120 states have internal predecessors, (20197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12121 states to 12121 states and 20197 transitions. [2023-11-06 23:05:10,307 INFO L78 Accepts]: Start accepts. Automaton has 12121 states and 20197 transitions. Word has length 497 [2023-11-06 23:05:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:10,310 INFO L495 AbstractCegarLoop]: Abstraction has 12121 states and 20197 transitions. [2023-11-06 23:05:10,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.4) internal successors, (497), 5 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 12121 states and 20197 transitions. [2023-11-06 23:05:10,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2023-11-06 23:05:10,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:10,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:10,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:10,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:10,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:10,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:10,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1376760631, now seen corresponding path program 1 times [2023-11-06 23:05:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:10,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766778133] [2023-11-06 23:05:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:10,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:10,806 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:10,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433188138] [2023-11-06 23:05:10,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:10,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:10,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:10,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:10,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:05:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:14,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 23:05:14,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:16,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:16,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:16,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766778133] [2023-11-06 23:05:16,279 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:16,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433188138] [2023-11-06 23:05:16,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433188138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:16,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:16,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:05:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032203747] [2023-11-06 23:05:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:16,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:05:16,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:16,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:05:16,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:05:16,289 INFO L87 Difference]: Start difference. First operand 12121 states and 20197 transitions. Second operand has 9 states, 9 states have (on average 55.333333333333336) internal successors, (498), 9 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:21,524 INFO L93 Difference]: Finished difference Result 35795 states and 59647 transitions. [2023-11-06 23:05:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:05:21,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 55.333333333333336) internal successors, (498), 9 states have internal predecessors, (498), 0 states have call successors, (0), 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 498 [2023-11-06 23:05:21,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:21,575 INFO L225 Difference]: With dead ends: 35795 [2023-11-06 23:05:21,575 INFO L226 Difference]: Without dead ends: 23958 [2023-11-06 23:05:21,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:05:21,593 INFO L413 NwaCegarLoop]: 20056 mSDtfsCounter, 136474 mSDsluCounter, 79516 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136474 SdHoareTripleChecker+Valid, 99572 SdHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:21,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136474 Valid, 99572 Invalid, 4457 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [6 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 23:05:21,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23958 states. [2023-11-06 23:05:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23958 to 12125. [2023-11-06 23:05:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12125 states, 12124 states have (on average 1.6661992741669416) internal successors, (20201), 12124 states have internal predecessors, (20201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12125 states to 12125 states and 20201 transitions. [2023-11-06 23:05:21,937 INFO L78 Accepts]: Start accepts. Automaton has 12125 states and 20201 transitions. Word has length 498 [2023-11-06 23:05:21,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:21,940 INFO L495 AbstractCegarLoop]: Abstraction has 12125 states and 20201 transitions. [2023-11-06 23:05:21,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 55.333333333333336) internal successors, (498), 9 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 12125 states and 20201 transitions. [2023-11-06 23:05:21,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2023-11-06 23:05:21,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:21,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:21,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:22,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:22,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:22,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:22,166 INFO L85 PathProgramCache]: Analyzing trace with hash 60175569, now seen corresponding path program 1 times [2023-11-06 23:05:22,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:22,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225840409] [2023-11-06 23:05:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:22,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:22,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:22,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615135061] [2023-11-06 23:05:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:22,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:22,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:22,406 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:22,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:05:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:26,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:05:26,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:27,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:27,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:27,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225840409] [2023-11-06 23:05:27,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:27,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615135061] [2023-11-06 23:05:27,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615135061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:27,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:27,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:27,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677536899] [2023-11-06 23:05:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:27,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:05:27,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:27,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:05:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:05:27,831 INFO L87 Difference]: Start difference. First operand 12125 states and 20201 transitions. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:28,685 INFO L93 Difference]: Finished difference Result 23966 states and 39930 transitions. [2023-11-06 23:05:28,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:05:28,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 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 500 [2023-11-06 23:05:28,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:28,710 INFO L225 Difference]: With dead ends: 23966 [2023-11-06 23:05:28,710 INFO L226 Difference]: Without dead ends: 12125 [2023-11-06 23:05:28,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:05:28,723 INFO L413 NwaCegarLoop]: 19983 mSDtfsCounter, 19889 mSDsluCounter, 19981 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19889 SdHoareTripleChecker+Valid, 39964 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:28,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19889 Valid, 39964 Invalid, 424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:05:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12125 states. [2023-11-06 23:05:28,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12125 to 12125. [2023-11-06 23:05:28,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12125 states, 12124 states have (on average 1.666034312108215) internal successors, (20199), 12124 states have internal predecessors, (20199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:28,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12125 states to 12125 states and 20199 transitions. [2023-11-06 23:05:28,942 INFO L78 Accepts]: Start accepts. Automaton has 12125 states and 20199 transitions. Word has length 500 [2023-11-06 23:05:28,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:28,942 INFO L495 AbstractCegarLoop]: Abstraction has 12125 states and 20199 transitions. [2023-11-06 23:05:28,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:28,943 INFO L276 IsEmpty]: Start isEmpty. Operand 12125 states and 20199 transitions. [2023-11-06 23:05:28,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2023-11-06 23:05:28,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:28,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:28,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:29,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:29,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:29,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:29,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1466206601, now seen corresponding path program 1 times [2023-11-06 23:05:29,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:29,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97552129] [2023-11-06 23:05:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:29,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:29,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:29,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067134629] [2023-11-06 23:05:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:29,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:29,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:29,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:29,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:05:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:33,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:05:33,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:34,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:34,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97552129] [2023-11-06 23:05:34,745 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:34,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067134629] [2023-11-06 23:05:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067134629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:34,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:34,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:05:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205802207] [2023-11-06 23:05:34,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:34,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:05:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:34,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:05:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:05:34,748 INFO L87 Difference]: Start difference. First operand 12125 states and 20199 transitions. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:35,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:35,740 INFO L93 Difference]: Finished difference Result 23966 states and 39926 transitions. [2023-11-06 23:05:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:35,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 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 501 [2023-11-06 23:05:35,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:35,763 INFO L225 Difference]: With dead ends: 23966 [2023-11-06 23:05:35,763 INFO L226 Difference]: Without dead ends: 12125 [2023-11-06 23:05:35,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 496 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:05:35,779 INFO L413 NwaCegarLoop]: 19983 mSDtfsCounter, 20069 mSDsluCounter, 39963 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20069 SdHoareTripleChecker+Valid, 59946 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:35,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20069 Valid, 59946 Invalid, 631 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:05:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12125 states. [2023-11-06 23:05:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12125 to 12125. [2023-11-06 23:05:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12125 states, 12124 states have (on average 1.665951831078852) internal successors, (20198), 12124 states have internal predecessors, (20198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12125 states to 12125 states and 20198 transitions. [2023-11-06 23:05:35,981 INFO L78 Accepts]: Start accepts. Automaton has 12125 states and 20198 transitions. Word has length 501 [2023-11-06 23:05:35,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:35,982 INFO L495 AbstractCegarLoop]: Abstraction has 12125 states and 20198 transitions. [2023-11-06 23:05:35,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 12125 states and 20198 transitions. [2023-11-06 23:05:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-11-06 23:05:35,987 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:35,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:36,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:36,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:36,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:36,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:36,208 INFO L85 PathProgramCache]: Analyzing trace with hash 967309669, now seen corresponding path program 1 times [2023-11-06 23:05:36,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:36,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708739803] [2023-11-06 23:05:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:36,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:36,441 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:36,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935375320] [2023-11-06 23:05:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:36,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:36,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:36,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:36,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:05:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:40,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:05:40,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:41,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:41,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:41,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708739803] [2023-11-06 23:05:41,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:41,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935375320] [2023-11-06 23:05:41,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935375320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:41,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:05:41,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982960586] [2023-11-06 23:05:41,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:41,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:05:41,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:05:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:05:41,627 INFO L87 Difference]: Start difference. First operand 12125 states and 20198 transitions. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:42,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:42,621 INFO L93 Difference]: Finished difference Result 23966 states and 39924 transitions. [2023-11-06 23:05:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:42,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 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 502 [2023-11-06 23:05:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:42,638 INFO L225 Difference]: With dead ends: 23966 [2023-11-06 23:05:42,639 INFO L226 Difference]: Without dead ends: 12125 [2023-11-06 23:05:42,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:05:42,648 INFO L413 NwaCegarLoop]: 19983 mSDtfsCounter, 39823 mSDsluCounter, 39962 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39823 SdHoareTripleChecker+Valid, 59945 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:42,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39823 Valid, 59945 Invalid, 629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:05:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12125 states. [2023-11-06 23:05:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12125 to 12125. [2023-11-06 23:05:42,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12125 states, 12124 states have (on average 1.6658693500494886) internal successors, (20197), 12124 states have internal predecessors, (20197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12125 states to 12125 states and 20197 transitions. [2023-11-06 23:05:42,845 INFO L78 Accepts]: Start accepts. Automaton has 12125 states and 20197 transitions. Word has length 502 [2023-11-06 23:05:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:42,846 INFO L495 AbstractCegarLoop]: Abstraction has 12125 states and 20197 transitions. [2023-11-06 23:05:42,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 12125 states and 20197 transitions. [2023-11-06 23:05:42,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-11-06 23:05:42,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:42,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:42,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:43,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 23:05:43,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:43,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash 912916771, now seen corresponding path program 1 times [2023-11-06 23:05:43,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:43,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895885760] [2023-11-06 23:05:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:43,325 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:43,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248730865] [2023-11-06 23:05:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:43,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:43,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:43,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:43,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:05:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:47,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-06 23:05:47,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:49,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:49,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:49,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895885760] [2023-11-06 23:05:49,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:05:49,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248730865] [2023-11-06 23:05:49,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248730865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:49,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:49,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 23:05:49,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234395971] [2023-11-06 23:05:49,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:49,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 23:05:49,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 23:05:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:05:49,144 INFO L87 Difference]: Start difference. First operand 12125 states and 20197 transitions. Second operand has 16 states, 16 states have (on average 31.375) internal successors, (502), 16 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:57,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:57,077 INFO L93 Difference]: Finished difference Result 106897 states and 178045 transitions. [2023-11-06 23:05:57,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-06 23:05:57,077 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 31.375) internal successors, (502), 16 states have internal predecessors, (502), 0 states have call successors, (0), 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 502 [2023-11-06 23:05:57,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:57,148 INFO L225 Difference]: With dead ends: 106897 [2023-11-06 23:05:57,148 INFO L226 Difference]: Without dead ends: 95056 [2023-11-06 23:05:57,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=746, Invalid=4084, Unknown=0, NotChecked=0, Total=4830 [2023-11-06 23:05:57,171 INFO L413 NwaCegarLoop]: 40239 mSDtfsCounter, 353531 mSDsluCounter, 443194 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353531 SdHoareTripleChecker+Valid, 483433 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.6s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:57,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353531 Valid, 483433 Invalid, 1305 Unknown, 0 Unchecked, 1.6s Time], IncrementalHoareTripleChecker [14 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-06 23:05:57,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95056 states. [2023-11-06 23:05:57,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95056 to 12142. [2023-11-06 23:05:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12142 states, 12141 states have (on average 1.6651840869780083) internal successors, (20217), 12141 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 20217 transitions. [2023-11-06 23:05:57,875 INFO L78 Accepts]: Start accepts. Automaton has 12142 states and 20217 transitions. Word has length 502 [2023-11-06 23:05:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:57,876 INFO L495 AbstractCegarLoop]: Abstraction has 12142 states and 20217 transitions. [2023-11-06 23:05:57,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 31.375) internal successors, (502), 16 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 12142 states and 20217 transitions. [2023-11-06 23:05:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-11-06 23:05:57,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:57,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:57,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:58,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 23:05:58,107 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:05:58,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:58,108 INFO L85 PathProgramCache]: Analyzing trace with hash -920935887, now seen corresponding path program 1 times [2023-11-06 23:05:58,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:58,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781215964] [2023-11-06 23:05:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:58,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:58,318 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:05:58,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512057995] [2023-11-06 23:05:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:58,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:58,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:58,320 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:58,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:06:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:02,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:06:02,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:02,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:02,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:02,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781215964] [2023-11-06 23:06:02,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512057995] [2023-11-06 23:06:02,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512057995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:02,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:02,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:02,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752084074] [2023-11-06 23:06:02,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:02,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:02,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:02,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:02,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:02,308 INFO L87 Difference]: Start difference. First operand 12142 states and 20217 transitions. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:02,671 INFO L93 Difference]: Finished difference Result 24001 states and 39964 transitions. [2023-11-06 23:06:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:02,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 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 502 [2023-11-06 23:06:02,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:02,685 INFO L225 Difference]: With dead ends: 24001 [2023-11-06 23:06:02,685 INFO L226 Difference]: Without dead ends: 12143 [2023-11-06 23:06:02,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:02,695 INFO L413 NwaCegarLoop]: 20192 mSDtfsCounter, 6 mSDsluCounter, 20181 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40373 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:02,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40373 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:06:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2023-11-06 23:06:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 12142. [2023-11-06 23:06:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12142 states, 12141 states have (on average 1.6651017214397497) internal successors, (20216), 12141 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 20216 transitions. [2023-11-06 23:06:02,870 INFO L78 Accepts]: Start accepts. Automaton has 12142 states and 20216 transitions. Word has length 502 [2023-11-06 23:06:02,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:02,871 INFO L495 AbstractCegarLoop]: Abstraction has 12142 states and 20216 transitions. [2023-11-06 23:06:02,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 12142 states and 20216 transitions. [2023-11-06 23:06:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2023-11-06 23:06:02,876 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:02,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:02,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:03,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 23:06:03,093 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:03,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:03,093 INFO L85 PathProgramCache]: Analyzing trace with hash 2121849045, now seen corresponding path program 1 times [2023-11-06 23:06:03,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:03,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979545766] [2023-11-06 23:06:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:03,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:03,344 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:03,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885579331] [2023-11-06 23:06:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:03,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:03,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:03,346 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:03,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:06:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:07,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:06:07,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:07,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:07,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:07,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979545766] [2023-11-06 23:06:07,611 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:07,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885579331] [2023-11-06 23:06:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885579331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:07,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:07,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310454575] [2023-11-06 23:06:07,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:07,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:07,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:07,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:07,622 INFO L87 Difference]: Start difference. First operand 12142 states and 20216 transitions. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:07,877 INFO L93 Difference]: Finished difference Result 24002 states and 39963 transitions. [2023-11-06 23:06:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:07,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 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 502 [2023-11-06 23:06:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:07,892 INFO L225 Difference]: With dead ends: 24002 [2023-11-06 23:06:07,892 INFO L226 Difference]: Without dead ends: 12144 [2023-11-06 23:06:07,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:07,903 INFO L413 NwaCegarLoop]: 20192 mSDtfsCounter, 6 mSDsluCounter, 20181 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40373 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:07,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40373 Invalid, 7 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:06:07,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12144 states. [2023-11-06 23:06:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12144 to 12143. [2023-11-06 23:06:08,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12143 states, 12142 states have (on average 1.6650469444901994) internal successors, (20217), 12142 states have internal predecessors, (20217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:08,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12143 states to 12143 states and 20217 transitions. [2023-11-06 23:06:08,089 INFO L78 Accepts]: Start accepts. Automaton has 12143 states and 20217 transitions. Word has length 502 [2023-11-06 23:06:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:08,090 INFO L495 AbstractCegarLoop]: Abstraction has 12143 states and 20217 transitions. [2023-11-06 23:06:08,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 12143 states and 20217 transitions. [2023-11-06 23:06:08,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-11-06 23:06:08,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:08,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:08,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:08,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:08,309 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:08,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:08,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1520729547, now seen corresponding path program 1 times [2023-11-06 23:06:08,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:08,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896405095] [2023-11-06 23:06:08,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:08,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:08,513 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:08,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214738094] [2023-11-06 23:06:08,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:08,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:08,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:08,515 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:08,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:06:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:12,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 2500 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-06 23:06:12,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:14,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:14,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896405095] [2023-11-06 23:06:14,234 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214738094] [2023-11-06 23:06:14,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214738094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:14,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:14,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 23:06:14,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310383396] [2023-11-06 23:06:14,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:14,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:06:14,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:14,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:06:14,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:06:14,238 INFO L87 Difference]: Start difference. First operand 12143 states and 20217 transitions. Second operand has 10 states, 10 states have (on average 50.3) internal successors, (503), 10 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:16,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:16,679 INFO L93 Difference]: Finished difference Result 59874 states and 99671 transitions. [2023-11-06 23:06:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 23:06:16,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 50.3) internal successors, (503), 10 states have internal predecessors, (503), 0 states have call successors, (0), 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 503 [2023-11-06 23:06:16,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:16,708 INFO L225 Difference]: With dead ends: 59874 [2023-11-06 23:06:16,708 INFO L226 Difference]: Without dead ends: 48015 [2023-11-06 23:06:16,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2023-11-06 23:06:16,721 INFO L413 NwaCegarLoop]: 20894 mSDtfsCounter, 272891 mSDsluCounter, 103240 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272891 SdHoareTripleChecker+Valid, 124134 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:16,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272891 Valid, 124134 Invalid, 244 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [8 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 23:06:16,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48015 states. [2023-11-06 23:06:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48015 to 12143. [2023-11-06 23:06:17,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12143 states, 12142 states have (on average 1.6649645857354636) internal successors, (20216), 12142 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12143 states to 12143 states and 20216 transitions. [2023-11-06 23:06:17,023 INFO L78 Accepts]: Start accepts. Automaton has 12143 states and 20216 transitions. Word has length 503 [2023-11-06 23:06:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:17,024 INFO L495 AbstractCegarLoop]: Abstraction has 12143 states and 20216 transitions. [2023-11-06 23:06:17,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 50.3) internal successors, (503), 10 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 12143 states and 20216 transitions. [2023-11-06 23:06:17,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-11-06 23:06:17,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:17,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:17,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:17,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:17,246 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:17,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:17,247 INFO L85 PathProgramCache]: Analyzing trace with hash -958856741, now seen corresponding path program 1 times [2023-11-06 23:06:17,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:17,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198735811] [2023-11-06 23:06:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:17,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:17,465 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:17,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883094747] [2023-11-06 23:06:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:17,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:17,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:17,572 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:17,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:06:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:21,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 23:06:21,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:22,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:22,579 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:22,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:22,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198735811] [2023-11-06 23:06:22,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:22,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883094747] [2023-11-06 23:06:22,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883094747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:22,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:22,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:06:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192265508] [2023-11-06 23:06:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:06:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:06:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:22,583 INFO L87 Difference]: Start difference. First operand 12143 states and 20216 transitions. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:23,200 INFO L93 Difference]: Finished difference Result 24002 states and 39960 transitions. [2023-11-06 23:06:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:06:23,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 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 504 [2023-11-06 23:06:23,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:23,211 INFO L225 Difference]: With dead ends: 24002 [2023-11-06 23:06:23,211 INFO L226 Difference]: Without dead ends: 12143 [2023-11-06 23:06:23,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:23,221 INFO L413 NwaCegarLoop]: 20019 mSDtfsCounter, 19944 mSDsluCounter, 20018 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19944 SdHoareTripleChecker+Valid, 40037 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:23,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19944 Valid, 40037 Invalid, 344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:06:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2023-11-06 23:06:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 12143. [2023-11-06 23:06:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12143 states, 12142 states have (on average 1.6647998682259924) internal successors, (20214), 12142 states have internal predecessors, (20214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12143 states to 12143 states and 20214 transitions. [2023-11-06 23:06:23,565 INFO L78 Accepts]: Start accepts. Automaton has 12143 states and 20214 transitions. Word has length 504 [2023-11-06 23:06:23,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:23,567 INFO L495 AbstractCegarLoop]: Abstraction has 12143 states and 20214 transitions. [2023-11-06 23:06:23,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 12143 states and 20214 transitions. [2023-11-06 23:06:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2023-11-06 23:06:23,572 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:23,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:23,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:23,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:23,795 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:23,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1618774763, now seen corresponding path program 1 times [2023-11-06 23:06:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:23,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998577637] [2023-11-06 23:06:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:23,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:24,005 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:24,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908810286] [2023-11-06 23:06:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:24,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:24,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:24,013 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:24,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:06:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:27,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:06:27,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:28,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:28,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:28,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998577637] [2023-11-06 23:06:28,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:28,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908810286] [2023-11-06 23:06:28,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908810286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:28,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:28,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:06:28,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041252812] [2023-11-06 23:06:28,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:28,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:06:28,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:28,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:06:28,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:06:28,924 INFO L87 Difference]: Start difference. First operand 12143 states and 20214 transitions. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:29,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:29,856 INFO L93 Difference]: Finished difference Result 24002 states and 39956 transitions. [2023-11-06 23:06:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:06:29,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 0 states have call successors, (0), 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 505 [2023-11-06 23:06:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:29,866 INFO L225 Difference]: With dead ends: 24002 [2023-11-06 23:06:29,866 INFO L226 Difference]: Without dead ends: 12143 [2023-11-06 23:06:29,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:06:29,872 INFO L413 NwaCegarLoop]: 20019 mSDtfsCounter, 20061 mSDsluCounter, 40035 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20061 SdHoareTripleChecker+Valid, 60054 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:29,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20061 Valid, 60054 Invalid, 511 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 23:06:29,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2023-11-06 23:06:29,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 12143. [2023-11-06 23:06:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12143 states, 12142 states have (on average 1.6647175094712567) internal successors, (20213), 12142 states have internal predecessors, (20213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12143 states to 12143 states and 20213 transitions. [2023-11-06 23:06:29,999 INFO L78 Accepts]: Start accepts. Automaton has 12143 states and 20213 transitions. Word has length 505 [2023-11-06 23:06:30,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:30,000 INFO L495 AbstractCegarLoop]: Abstraction has 12143 states and 20213 transitions. [2023-11-06 23:06:30,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand 12143 states and 20213 transitions. [2023-11-06 23:06:30,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-11-06 23:06:30,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:30,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:30,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:30,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:30,227 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:30,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash 396647125, now seen corresponding path program 1 times [2023-11-06 23:06:30,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:30,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785934805] [2023-11-06 23:06:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:30,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:30,431 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:30,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334639269] [2023-11-06 23:06:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:30,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:30,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:30,433 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:30,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 23:06:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:34,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:06:34,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:35,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:35,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785934805] [2023-11-06 23:06:35,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334639269] [2023-11-06 23:06:35,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334639269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:35,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:35,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:06:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096753552] [2023-11-06 23:06:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:35,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:06:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:06:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:06:35,281 INFO L87 Difference]: Start difference. First operand 12143 states and 20213 transitions. Second operand has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:06:36,234 INFO L93 Difference]: Finished difference Result 24002 states and 39954 transitions. [2023-11-06 23:06:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:06:36,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 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 506 [2023-11-06 23:06:36,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:06:36,246 INFO L225 Difference]: With dead ends: 24002 [2023-11-06 23:06:36,247 INFO L226 Difference]: Without dead ends: 12143 [2023-11-06 23:06:36,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:06:36,254 INFO L413 NwaCegarLoop]: 20019 mSDtfsCounter, 39868 mSDsluCounter, 40034 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39868 SdHoareTripleChecker+Valid, 60053 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:06:36,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39868 Valid, 60053 Invalid, 509 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 23:06:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12143 states. [2023-11-06 23:06:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12143 to 12143. [2023-11-06 23:06:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12143 states, 12142 states have (on average 1.6646351507165211) internal successors, (20212), 12142 states have internal predecessors, (20212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12143 states to 12143 states and 20212 transitions. [2023-11-06 23:06:36,381 INFO L78 Accepts]: Start accepts. Automaton has 12143 states and 20212 transitions. Word has length 506 [2023-11-06 23:06:36,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:06:36,382 INFO L495 AbstractCegarLoop]: Abstraction has 12143 states and 20212 transitions. [2023-11-06 23:06:36,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 12143 states and 20212 transitions. [2023-11-06 23:06:36,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2023-11-06 23:06:36,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:06:36,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:06:36,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:36,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:36,609 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:06:36,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash -309949481, now seen corresponding path program 1 times [2023-11-06 23:06:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:06:36,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334257986] [2023-11-06 23:06:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:06:36,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:06:36,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717616158] [2023-11-06 23:06:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:36,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:06:36,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:06:36,817 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:06:36,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa246724-5c55-4974-874a-829a08f831d0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 23:06:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:40,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 77 conjunts are in the unsatisfiable core [2023-11-06 23:06:40,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:06:45,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:45,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:06:45,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334257986] [2023-11-06 23:06:45,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:06:45,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717616158] [2023-11-06 23:06:45,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717616158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:45,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:45,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-06 23:06:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54924674] [2023-11-06 23:06:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:45,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:06:45,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:06:45,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:06:45,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:06:45,526 INFO L87 Difference]: Start difference. First operand 12143 states and 20212 transitions. Second operand has 13 states, 13 states have (on average 38.92307692307692) internal successors, (506), 13 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)