./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gr2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/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_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gr2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:14:46,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:14:46,874 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:14:46,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:14:46,882 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:14:46,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:14:46,922 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:14:46,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:14:46,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:14:46,926 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:14:46,927 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:14:46,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:14:46,929 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:14:46,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:14:46,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:14:46,934 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:14:46,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:14:46,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:14:46,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:14:46,942 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:14:46,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:14:46,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:14:46,944 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:14:46,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:14:46,945 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:14:46,946 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:14:46,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:14:46,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:14:46,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:46,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:14:46,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:14:46,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:14:46,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:14:46,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:14:46,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:14:46,952 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:14:46,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:14:46,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:14:46,953 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:14:46,953 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_5fce8f08-a607-4d2b-9350-42db0df2b7f7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 [2023-11-06 22:14:47,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:14:47,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:14:47,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:14:47,325 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:14:47,326 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:14:47,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/loop-lit/gr2006.i [2023-11-06 22:14:50,974 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:14:51,310 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:14:51,311 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/sv-benchmarks/c/loop-lit/gr2006.i [2023-11-06 22:14:51,332 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/data/2ad758c60/d3c666f67ca9453a9c3c3b4cbed11afb/FLAGcb3873492 [2023-11-06 22:14:51,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/data/2ad758c60/d3c666f67ca9453a9c3c3b4cbed11afb [2023-11-06 22:14:51,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:14:51,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:14:51,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:51,380 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:14:51,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:14:51,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,390 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689a2b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51, skipping insertion in model container [2023-11-06 22:14:51,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,422 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:14:51,659 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_5fce8f08-a607-4d2b-9350-42db0df2b7f7/sv-benchmarks/c/loop-lit/gr2006.i[895,908] [2023-11-06 22:14:51,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:51,695 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:14:51,715 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_5fce8f08-a607-4d2b-9350-42db0df2b7f7/sv-benchmarks/c/loop-lit/gr2006.i[895,908] [2023-11-06 22:14:51,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:14:51,743 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:14:51,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51 WrapperNode [2023-11-06 22:14:51,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:14:51,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:51,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:14:51,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:14:51,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,791 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2023-11-06 22:14:51,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:14:51,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:14:51,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:14:51,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:14:51,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,813 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:14:51,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:14:51,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:14:51,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:14:51,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (1/1) ... [2023-11-06 22:14:51,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:14:51,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:51,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:14:51,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:14:51,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:14:51,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:14:51,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:14:51,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:14:52,037 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:14:52,041 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:14:52,264 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:14:52,271 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:14:52,272 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:14:52,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:52 BoogieIcfgContainer [2023-11-06 22:14:52,275 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:14:52,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:14:52,291 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:14:52,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:14:52,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:51" (1/3) ... [2023-11-06 22:14:52,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f985e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:52, skipping insertion in model container [2023-11-06 22:14:52,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:51" (2/3) ... [2023-11-06 22:14:52,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f985e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:52, skipping insertion in model container [2023-11-06 22:14:52,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:52" (3/3) ... [2023-11-06 22:14:52,300 INFO L112 eAbstractionObserver]: Analyzing ICFG gr2006.i [2023-11-06 22:14:52,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:14:52,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:14:52,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:14:52,424 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;@6b88b788, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:14:52,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:14:52,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-06 22:14:52,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:52,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:14:52,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:52,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash 890091623, now seen corresponding path program 1 times [2023-11-06 22:14:52,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:52,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349375461] [2023-11-06 22:14:52,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:52,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:52,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:52,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349375461] [2023-11-06 22:14:52,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349375461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:52,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:52,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:14:52,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291497277] [2023-11-06 22:14:52,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:52,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:14:52,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:52,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:14:52,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:14:52,756 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:52,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:52,774 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2023-11-06 22:14:52,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:14:52,777 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-11-06 22:14:52,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:52,788 INFO L225 Difference]: With dead ends: 21 [2023-11-06 22:14:52,789 INFO L226 Difference]: Without dead ends: 9 [2023-11-06 22:14:52,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:14:52,800 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:52,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:14:52,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-06 22:14:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-06 22:14:52,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-11-06 22:14:52,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-11-06 22:14:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:52,846 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-11-06 22:14:52,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-11-06 22:14:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:14:52,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:52,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:52,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:14:52,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:52,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash 297871632, now seen corresponding path program 1 times [2023-11-06 22:14:52,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:52,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446810524] [2023-11-06 22:14:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:52,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:52,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446810524] [2023-11-06 22:14:52,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446810524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:52,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:52,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:14:52,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287884362] [2023-11-06 22:14:52,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:14:52,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:53,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:14:53,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:53,001 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:53,038 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-06 22:14:53,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:14:53,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:14:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:53,041 INFO L225 Difference]: With dead ends: 23 [2023-11-06 22:14:53,041 INFO L226 Difference]: Without dead ends: 16 [2023-11-06 22:14:53,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:14:53,050 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:53,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:14:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-06 22:14:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 11. [2023-11-06 22:14:53,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:53,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-11-06 22:14:53,064 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2023-11-06 22:14:53,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:53,064 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-11-06 22:14:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:53,065 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-11-06 22:14:53,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:14:53,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:53,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:53,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:14:53,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:53,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:53,080 INFO L85 PathProgramCache]: Analyzing trace with hash 296024590, now seen corresponding path program 1 times [2023-11-06 22:14:53,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991125720] [2023-11-06 22:14:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:53,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991125720] [2023-11-06 22:14:53,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991125720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:53,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:53,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:14:53,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616514198] [2023-11-06 22:14:53,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:53,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:14:53,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:53,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:14:53,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:53,171 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:53,242 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2023-11-06 22:14:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:14:53,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-06 22:14:53,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:53,244 INFO L225 Difference]: With dead ends: 18 [2023-11-06 22:14:53,244 INFO L226 Difference]: Without dead ends: 14 [2023-11-06 22:14:53,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:14:53,246 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:53,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:14:53,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-06 22:14:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-06 22:14:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-11-06 22:14:53,253 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2023-11-06 22:14:53,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:53,253 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-11-06 22:14:53,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:53,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-11-06 22:14:53,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:14:53,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:53,255 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:53,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:14:53,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:53,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:53,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1661002755, now seen corresponding path program 1 times [2023-11-06 22:14:53,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:53,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047769171] [2023-11-06 22:14:53,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:53,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:53,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047769171] [2023-11-06 22:14:53,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047769171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:14:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378970439] [2023-11-06 22:14:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:53,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:53,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:53,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:53,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:14:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:53,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:14:53,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:53,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:14:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:53,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378970439] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:14:53,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:14:53,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-06 22:14:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984506906] [2023-11-06 22:14:53,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:14:53,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:14:53,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:53,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:14:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:53,565 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:53,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:53,625 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2023-11-06 22:14:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:14:53,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 11 [2023-11-06 22:14:53,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:53,627 INFO L225 Difference]: With dead ends: 35 [2023-11-06 22:14:53,627 INFO L226 Difference]: Without dead ends: 28 [2023-11-06 22:14:53,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:14:53,629 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:53,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:14:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-06 22:14:53,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2023-11-06 22:14:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-06 22:14:53,639 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 11 [2023-11-06 22:14:53,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:53,639 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-06 22:14:53,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:53,640 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-06 22:14:53,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:14:53,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:53,641 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:53,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:53,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:53,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:53,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1073415472, now seen corresponding path program 2 times [2023-11-06 22:14:53,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:53,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92541776] [2023-11-06 22:14:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:53,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:54,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:54,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:54,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92541776] [2023-11-06 22:14:54,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92541776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:14:54,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377553039] [2023-11-06 22:14:54,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:14:54,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:54,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:54,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:54,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:14:54,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:14:54,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:54,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:14:54,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:14:54,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:14:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:14:54,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377553039] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:14:54,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:14:54,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-06 22:14:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712262701] [2023-11-06 22:14:54,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:14:54,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:14:54,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:54,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:14:54,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:14:54,494 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:54,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:54,650 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2023-11-06 22:14:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:14:54,651 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-06 22:14:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:54,653 INFO L225 Difference]: With dead ends: 47 [2023-11-06 22:14:54,653 INFO L226 Difference]: Without dead ends: 40 [2023-11-06 22:14:54,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:14:54,655 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:54,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 47 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:14:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-06 22:14:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2023-11-06 22:14:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2023-11-06 22:14:54,664 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 20 [2023-11-06 22:14:54,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:54,665 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2023-11-06 22:14:54,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:54,665 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2023-11-06 22:14:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:14:54,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:54,667 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 5, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:54,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:54,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:54,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:54,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:54,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1219917565, now seen corresponding path program 3 times [2023-11-06 22:14:54,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:54,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480149631] [2023-11-06 22:14:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:54,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 73 proven. 40 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:14:55,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:55,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480149631] [2023-11-06 22:14:55,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480149631] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:14:55,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272194321] [2023-11-06 22:14:55,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:14:55,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:55,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:55,143 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:55,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:14:55,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-06 22:14:55,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:55,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:14:55,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:55,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:14:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:14:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272194321] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:14:55,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:14:55,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 23 [2023-11-06 22:14:55,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966363106] [2023-11-06 22:14:55,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:14:55,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:14:55,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:55,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:14:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:14:55,728 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:55,871 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2023-11-06 22:14:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:14:55,872 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 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 35 [2023-11-06 22:14:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:55,874 INFO L225 Difference]: With dead ends: 104 [2023-11-06 22:14:55,874 INFO L226 Difference]: Without dead ends: 84 [2023-11-06 22:14:55,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:14:55,876 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:55,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 49 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:14:55,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-06 22:14:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2023-11-06 22:14:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.075) internal successors, (86), 80 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2023-11-06 22:14:55,894 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 35 [2023-11-06 22:14:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:55,894 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2023-11-06 22:14:55,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 23 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2023-11-06 22:14:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 22:14:55,899 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:55,899 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 20, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:55,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:56,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:56,109 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:56,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:56,109 INFO L85 PathProgramCache]: Analyzing trace with hash 399884816, now seen corresponding path program 4 times [2023-11-06 22:14:56,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:56,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668088888] [2023-11-06 22:14:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:56,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 268 proven. 610 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:14:57,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:57,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668088888] [2023-11-06 22:14:57,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668088888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:14:57,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522984596] [2023-11-06 22:14:57,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:14:57,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:57,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:57,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:57,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:14:57,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:14:57,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:14:57,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:14:57,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:57,335 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 268 proven. 610 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:14:57,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:14:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 268 proven. 610 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:14:58,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522984596] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:14:58,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:14:58,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2023-11-06 22:14:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345771576] [2023-11-06 22:14:58,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:14:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-06 22:14:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:58,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-06 22:14:58,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2023-11-06 22:14:58,342 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:58,592 INFO L93 Difference]: Finished difference Result 170 states and 202 transitions. [2023-11-06 22:14:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-06 22:14:58,593 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 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 80 [2023-11-06 22:14:58,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:58,596 INFO L225 Difference]: With dead ends: 170 [2023-11-06 22:14:58,596 INFO L226 Difference]: Without dead ends: 150 [2023-11-06 22:14:58,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2023-11-06 22:14:58,599 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:58,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:14:58,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-06 22:14:58,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 147. [2023-11-06 22:14:58,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.0410958904109588) internal successors, (152), 146 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 152 transitions. [2023-11-06 22:14:58,647 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 152 transitions. Word has length 80 [2023-11-06 22:14:58,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:58,650 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 152 transitions. [2023-11-06 22:14:58,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.066666666666667) internal successors, (138), 45 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:14:58,652 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 152 transitions. [2023-11-06 22:14:58,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-06 22:14:58,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:58,666 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 42, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:58,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:58,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:14:58,872 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:58,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash -344528976, now seen corresponding path program 5 times [2023-11-06 22:14:58,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:58,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388973283] [2023-11-06 22:14:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:58,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 554 proven. 2667 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:15:01,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:01,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388973283] [2023-11-06 22:15:01,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388973283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:01,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782241255] [2023-11-06 22:15:01,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:15:01,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:01,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:01,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:01,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:15:01,661 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-11-06 22:15:01,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:15:01,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-06 22:15:01,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:01,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 554 proven. 2667 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:15:01,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:15:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 554 proven. 2667 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 22:15:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782241255] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:15:03,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:15:03,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 53 [2023-11-06 22:15:03,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532302156] [2023-11-06 22:15:03,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:15:03,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-06 22:15:03,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:03,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-06 22:15:03,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-11-06 22:15:03,856 INFO L87 Difference]: Start difference. First operand 147 states and 152 transitions. Second operand has 53 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 53 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:04,099 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions. [2023-11-06 22:15:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-06 22:15:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 53 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2023-11-06 22:15:04,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:04,109 INFO L225 Difference]: With dead ends: 194 [2023-11-06 22:15:04,109 INFO L226 Difference]: Without dead ends: 174 [2023-11-06 22:15:04,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 248 SyntacticMatches, 36 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2023-11-06 22:15:04,113 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:04,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 79 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:15:04,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-06 22:15:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 171. [2023-11-06 22:15:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.035294117647059) internal successors, (176), 170 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 176 transitions. [2023-11-06 22:15:04,157 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 176 transitions. Word has length 146 [2023-11-06 22:15:04,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:04,159 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 176 transitions. [2023-11-06 22:15:04,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.0943396226415096) internal successors, (164), 53 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:04,160 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 176 transitions. [2023-11-06 22:15:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-06 22:15:04,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:04,175 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 50, 5, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:04,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:15:04,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 22:15:04,382 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:04,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:04,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1661700912, now seen corresponding path program 6 times [2023-11-06 22:15:04,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:04,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359761339] [2023-11-06 22:15:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:04,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 1416 proven. 57 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2023-11-06 22:15:04,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:04,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359761339] [2023-11-06 22:15:04,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359761339] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:04,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819622145] [2023-11-06 22:15:04,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:15:04,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:04,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:04,900 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:04,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:15:05,049 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2023-11-06 22:15:05,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:15:05,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:15:05,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 1416 proven. 57 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2023-11-06 22:15:05,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:15:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 1416 proven. 57 refuted. 0 times theorem prover too weak. 2982 trivial. 0 not checked. [2023-11-06 22:15:05,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819622145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:15:05,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:15:05,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2023-11-06 22:15:05,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824696193] [2023-11-06 22:15:05,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:15:05,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:15:05,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:05,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:15:05,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:15:05,252 INFO L87 Difference]: Start difference. First operand 171 states and 176 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:05,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:05,304 INFO L93 Difference]: Finished difference Result 191 states and 201 transitions. [2023-11-06 22:15:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:15:05,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-11-06 22:15:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:05,308 INFO L225 Difference]: With dead ends: 191 [2023-11-06 22:15:05,308 INFO L226 Difference]: Without dead ends: 187 [2023-11-06 22:15:05,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 335 SyntacticMatches, 10 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:15:05,312 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:05,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:15:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-06 22:15:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 174. [2023-11-06 22:15:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.0404624277456647) internal successors, (180), 173 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 180 transitions. [2023-11-06 22:15:05,343 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 180 transitions. Word has length 170 [2023-11-06 22:15:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:05,345 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 180 transitions. [2023-11-06 22:15:05,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 180 transitions. [2023-11-06 22:15:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-06 22:15:05,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:05,350 INFO L195 NwaCegarLoop]: trace histogram [56, 55, 50, 6, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:05,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:05,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 22:15:05,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:05,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1272078235, now seen corresponding path program 7 times [2023-11-06 22:15:05,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:05,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98175196] [2023-11-06 22:15:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:05,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 1681 proven. 86 refuted. 0 times theorem prover too weak. 2853 trivial. 0 not checked. [2023-11-06 22:15:06,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:06,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98175196] [2023-11-06 22:15:06,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98175196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:06,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934777846] [2023-11-06 22:15:06,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:15:06,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:06,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:06,011 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:06,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:15:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:06,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-06 22:15:06,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 4518 proven. 86 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:15:08,139 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:15:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 4518 proven. 86 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:15:10,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934777846] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:15:10,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:15:10,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 53, 53] total 97 [2023-11-06 22:15:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76588215] [2023-11-06 22:15:10,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:15:10,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-11-06 22:15:10,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:10,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-11-06 22:15:10,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-06 22:15:10,038 INFO L87 Difference]: Start difference. First operand 174 states and 180 transitions. Second operand has 97 states, 97 states have (on average 3.1752577319587627) internal successors, (308), 97 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:11,145 INFO L93 Difference]: Finished difference Result 1033 states and 1353 transitions. [2023-11-06 22:15:11,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-06 22:15:11,146 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.1752577319587627) internal successors, (308), 97 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-11-06 22:15:11,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:11,154 INFO L225 Difference]: With dead ends: 1033 [2023-11-06 22:15:11,154 INFO L226 Difference]: Without dead ends: 1029 [2023-11-06 22:15:11,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 252 SyntacticMatches, 12 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4964 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-06 22:15:11,161 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 20 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:11,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 261 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:15:11,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-11-06 22:15:11,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 309. [2023-11-06 22:15:11,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.1688311688311688) internal successors, (360), 308 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:11,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 360 transitions. [2023-11-06 22:15:11,203 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 360 transitions. Word has length 173 [2023-11-06 22:15:11,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:11,205 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 360 transitions. [2023-11-06 22:15:11,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.1752577319587627) internal successors, (308), 97 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 360 transitions. [2023-11-06 22:15:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2023-11-06 22:15:11,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:11,211 INFO L195 NwaCegarLoop]: trace histogram [101, 100, 51, 50, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:11,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:11,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:15:11,419 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:11,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash -338193904, now seen corresponding path program 8 times [2023-11-06 22:15:11,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:11,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899431648] [2023-11-06 22:15:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:21,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:21,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899431648] [2023-11-06 22:15:21,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899431648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:21,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405906241] [2023-11-06 22:15:21,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:15:21,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:21,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:21,584 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:21,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:15:21,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:15:21,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:15:21,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 208 conjunts are in the unsatisfiable core [2023-11-06 22:15:21,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:26,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:15:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 15150 backedges. 0 proven. 15150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:15:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405906241] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:15:27,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:15:27,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 104, 104] total 155 [2023-11-06 22:15:27,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266409071] [2023-11-06 22:15:27,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:15:27,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2023-11-06 22:15:27,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:27,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2023-11-06 22:15:27,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2858, Invalid=21012, Unknown=0, NotChecked=0, Total=23870 [2023-11-06 22:15:27,443 INFO L87 Difference]: Start difference. First operand 309 states and 360 transitions. Second operand has 155 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:36,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:36,748 INFO L93 Difference]: Finished difference Result 4542 states and 5921 transitions. [2023-11-06 22:15:36,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-06 22:15:36,751 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 0 states have call successors, (0), 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 308 [2023-11-06 22:15:36,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:36,780 INFO L225 Difference]: With dead ends: 4542 [2023-11-06 22:15:36,780 INFO L226 Difference]: Without dead ends: 4382 [2023-11-06 22:15:36,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7652 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=2863, Invalid=21317, Unknown=0, NotChecked=0, Total=24180 [2023-11-06 22:15:36,795 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 197 mSDsluCounter, 15992 mSDsCounter, 0 mSdLazyCounter, 17568 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 16245 SdHoareTripleChecker+Invalid, 17621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 17568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:36,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 16245 Invalid, 17621 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 17568 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-11-06 22:15:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2023-11-06 22:15:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 4186. [2023-11-06 22:15:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4186 states, 4185 states have (on average 1.0241338112305853) internal successors, (4286), 4185 states have internal predecessors, (4286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:37,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 4286 transitions. [2023-11-06 22:15:37,229 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 4286 transitions. Word has length 308 [2023-11-06 22:15:37,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:37,230 INFO L495 AbstractCegarLoop]: Abstraction has 4186 states and 4286 transitions. [2023-11-06 22:15:37,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 2.967741935483871) internal successors, (460), 155 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:37,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 4286 transitions. [2023-11-06 22:15:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-11-06 22:15:37,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:15:37,237 INFO L195 NwaCegarLoop]: trace histogram [102, 101, 52, 50, 1, 1, 1, 1, 1, 1] [2023-11-06 22:15:37,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:15:37,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:15:37,448 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:15:37,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:15:37,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2103022405, now seen corresponding path program 9 times [2023-11-06 22:15:37,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:15:37,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822398715] [2023-11-06 22:15:37,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:15:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:15:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:15:43,027 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7403 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-11-06 22:15:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:15:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822398715] [2023-11-06 22:15:43,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822398715] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:15:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623520305] [2023-11-06 22:15:43,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:15:43,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:15:43,030 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:15:43,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:15:43,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2023-11-06 22:15:43,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:15:43,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 103 conjunts are in the unsatisfiable core [2023-11-06 22:15:43,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:15:44,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:15:44,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:15:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 15453 backedges. 7903 proven. 7401 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-06 22:15:47,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623520305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:15:47,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:15:47,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54, 54] total 55 [2023-11-06 22:15:47,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728752287] [2023-11-06 22:15:47,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:15:47,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-11-06 22:15:47,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:15:47,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-11-06 22:15:47,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2023-11-06 22:15:47,478 INFO L87 Difference]: Start difference. First operand 4186 states and 4286 transitions. Second operand has 55 states, 55 states have (on average 3.909090909090909) internal successors, (215), 55 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:47,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:15:47,937 INFO L93 Difference]: Finished difference Result 4337 states and 4437 transitions. [2023-11-06 22:15:47,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-06 22:15:47,938 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.909090909090909) internal successors, (215), 55 states have internal predecessors, (215), 0 states have call successors, (0), 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 311 [2023-11-06 22:15:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:15:47,939 INFO L225 Difference]: With dead ends: 4337 [2023-11-06 22:15:47,939 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 22:15:47,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 569 SyntacticMatches, 102 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3338 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1484, Invalid=1486, Unknown=0, NotChecked=0, Total=2970 [2023-11-06 22:15:47,948 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:15:47,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:15:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 22:15:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 22:15:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:15:47,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 311 [2023-11-06 22:15:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:15:47,950 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:15:47,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.909090909090909) internal successors, (215), 55 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:15:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:15:47,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 22:15:47,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:15:47,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-06 22:15:48,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:15:48,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 22:15:51,641 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 22:15:51,641 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 33) no Hoare annotation was computed. [2023-11-06 22:15:51,641 INFO L899 garLoopResultBuilder]: For program point L29-2(lines 28 36) no Hoare annotation was computed. [2023-11-06 22:15:51,641 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-06 22:15:51,641 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 22:15:51,642 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 24 39) the Hoare annotation is: true [2023-11-06 22:15:51,642 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 22:15:51,642 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 22:15:51,644 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 36) the Hoare annotation is: (let ((.cse8 (= |ULTIMATE.start_main_~y~0#1| 13)) (.cse11 (= 23 |ULTIMATE.start_main_~y~0#1|)) (.cse1 (= 44 |ULTIMATE.start_main_~y~0#1|)) (.cse22 (= |ULTIMATE.start_main_~y~0#1| 8)) (.cse15 (= |ULTIMATE.start_main_~y~0#1| 26)) (.cse14 (= |ULTIMATE.start_main_~y~0#1| 24)) (.cse6 (= 35 |ULTIMATE.start_main_~y~0#1|)) (.cse31 (= 49 |ULTIMATE.start_main_~y~0#1|)) (.cse7 (= |ULTIMATE.start_main_~y~0#1| 10)) (.cse10 (= |ULTIMATE.start_main_~y~0#1| 37)) (.cse18 (= |ULTIMATE.start_main_~y~0#1| 25)) (.cse28 (= |ULTIMATE.start_main_~y~0#1| 11)) (.cse37 (= 3 |ULTIMATE.start_main_~y~0#1|)) (.cse13 (= |ULTIMATE.start_main_~y~0#1| 28)) (.cse12 (= 14 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~y~0#1| 39)) (.cse21 (= 40 |ULTIMATE.start_main_~y~0#1|)) (.cse20 (= 22 |ULTIMATE.start_main_~y~0#1|)) (.cse16 (= 7 |ULTIMATE.start_main_~y~0#1|)) (.cse30 (= 31 |ULTIMATE.start_main_~y~0#1|)) (.cse32 (= |ULTIMATE.start_main_~y~0#1| 27)) (.cse17 (= |ULTIMATE.start_main_~y~0#1| 12)) (.cse33 (= 47 |ULTIMATE.start_main_~y~0#1|)) (.cse0 (= 2 |ULTIMATE.start_main_~y~0#1|)) (.cse42 (= 32 |ULTIMATE.start_main_~y~0#1|)) (.cse40 (= |ULTIMATE.start_main_~y~0#1| 17)) (.cse43 (= 9 |ULTIMATE.start_main_~y~0#1|)) (.cse27 (= 46 |ULTIMATE.start_main_~y~0#1|)) (.cse41 (= 30 |ULTIMATE.start_main_~y~0#1|)) (.cse23 (= |ULTIMATE.start_main_~y~0#1| 34)) (.cse38 (= 5 |ULTIMATE.start_main_~y~0#1|)) (.cse36 (= 42 |ULTIMATE.start_main_~y~0#1|)) (.cse34 (= |ULTIMATE.start_main_~y~0#1| 18)) (.cse39 (= 41 |ULTIMATE.start_main_~y~0#1|)) (.cse47 (= |ULTIMATE.start_main_~y~0#1| 20)) (.cse26 (= |ULTIMATE.start_main_~y~0#1| 43)) (.cse19 (= 21 |ULTIMATE.start_main_~y~0#1|)) (.cse45 (= 29 |ULTIMATE.start_main_~y~0#1|)) (.cse35 (= |ULTIMATE.start_main_~y~0#1| 4)) (.cse29 (= 16 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_main_~y~0#1| 15)) (.cse9 (= |ULTIMATE.start_main_~y~0#1| 1)) (.cse44 (= |ULTIMATE.start_main_~y~0#1| 0)) (.cse5 (= 6 |ULTIMATE.start_main_~y~0#1|)) (.cse24 (= 19 |ULTIMATE.start_main_~y~0#1|)) (.cse48 (= |ULTIMATE.start_main_~y~0#1| 45)) (.cse46 (= |ULTIMATE.start_main_~y~0#1| 48)) (.cse49 (= |ULTIMATE.start_main_~y~0#1| 38)) (.cse25 (= |ULTIMATE.start_main_~y~0#1| 36)) (.cse4 (= |ULTIMATE.start_main_~y~0#1| 33))) (or (and .cse0 (= 98 |ULTIMATE.start_main_~x~0#1|)) (and .cse1 (= 44 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~x~0#1| 15) .cse2) (and .cse3 (= |ULTIMATE.start_main_~x~0#1| 39)) (and .cse4 (= |ULTIMATE.start_main_~x~0#1| 33)) (and .cse5 (= 6 |ULTIMATE.start_main_~x~0#1|)) (and .cse6 (= |ULTIMATE.start_main_~x~0#1| 65)) (and .cse7 (= |ULTIMATE.start_main_~x~0#1| 90)) (and (= 87 |ULTIMATE.start_main_~x~0#1|) .cse8) (and (= |ULTIMATE.start_main_~x~0#1| 1) .cse9) (and (= |ULTIMATE.start_main_~x~0#1| 63) .cse10) (and .cse11 (= 23 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~x~0#1| 86) .cse12) (and .cse13 (= |ULTIMATE.start_main_~x~0#1| 28)) (and (= |ULTIMATE.start_main_~x~0#1| 24) .cse14) (and (= |ULTIMATE.start_main_~x~0#1| 13) .cse8) (and (= |ULTIMATE.start_main_~x~0#1| 26) .cse15) (and .cse16 (= 7 |ULTIMATE.start_main_~x~0#1|)) (and .cse11 (= 77 |ULTIMATE.start_main_~x~0#1|)) (and .cse17 (= 88 |ULTIMATE.start_main_~x~0#1|)) (and (= 56 |ULTIMATE.start_main_~x~0#1|) .cse1) (and (= |ULTIMATE.start_main_~x~0#1| 25) .cse18) (and .cse19 (= 21 |ULTIMATE.start_main_~x~0#1|)) (and .cse20 (= |ULTIMATE.start_main_~x~0#1| 78)) (and .cse21 (= 40 |ULTIMATE.start_main_~x~0#1|)) (and (= 92 |ULTIMATE.start_main_~x~0#1|) .cse22) (and (= |ULTIMATE.start_main_~x~0#1| 8) .cse22) (and (= |ULTIMATE.start_main_~x~0#1| 34) .cse23) (and .cse15 (= |ULTIMATE.start_main_~x~0#1| 74)) (and (= 19 |ULTIMATE.start_main_~x~0#1|) .cse24) (and (= |ULTIMATE.start_main_~x~0#1| 36) .cse25) (and .cse26 (= 57 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~x~0#1| 54) .cse27) (and (= |ULTIMATE.start_main_~x~0#1| 11) .cse28) (and (= 16 |ULTIMATE.start_main_~x~0#1|) .cse29) (and (= 69 |ULTIMATE.start_main_~x~0#1|) .cse30) (and (= 49 |ULTIMATE.start_main_~x~0#1|) .cse31) (and (= 76 |ULTIMATE.start_main_~x~0#1|) .cse14) (and (= |ULTIMATE.start_main_~x~0#1| 73) .cse32) (and .cse33 (= 47 |ULTIMATE.start_main_~x~0#1|)) (and .cse6 (= 35 |ULTIMATE.start_main_~x~0#1|)) (and (= 51 |ULTIMATE.start_main_~x~0#1|) .cse31) (and .cse34 (= 82 |ULTIMATE.start_main_~x~0#1|)) (and .cse7 (= |ULTIMATE.start_main_~x~0#1| 10)) (and (= |ULTIMATE.start_main_~x~0#1| 96) .cse35) (and (= |ULTIMATE.start_main_~x~0#1| 58) .cse36) (and .cse37 (= 97 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~x~0#1| 37) .cse10) (and (= |ULTIMATE.start_main_~x~0#1| 75) .cse18) (and (= 89 |ULTIMATE.start_main_~x~0#1|) .cse28) (and (= 3 |ULTIMATE.start_main_~x~0#1|) .cse37) (and (= 5 |ULTIMATE.start_main_~x~0#1|) .cse38) (and .cse39 (= 59 |ULTIMATE.start_main_~x~0#1|)) (and .cse40 (= |ULTIMATE.start_main_~x~0#1| 17)) (and .cse13 (= 72 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~x~0#1| 70) .cse41) (and .cse12 (= 14 |ULTIMATE.start_main_~x~0#1|)) (and .cse3 (= |ULTIMATE.start_main_~x~0#1| 61)) (and .cse42 (= 32 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~x~0#1| 60) .cse21) (and .cse20 (= 22 |ULTIMATE.start_main_~x~0#1|)) (and (= 91 |ULTIMATE.start_main_~x~0#1|) .cse43) (and .cse16 (= |ULTIMATE.start_main_~x~0#1| 93)) (and (= 31 |ULTIMATE.start_main_~x~0#1|) .cse30) (and .cse32 (= |ULTIMATE.start_main_~x~0#1| 27)) (and .cse44 (= |ULTIMATE.start_main_~x~0#1| 0)) (and .cse17 (= |ULTIMATE.start_main_~x~0#1| 12)) (and (= 71 |ULTIMATE.start_main_~x~0#1|) .cse45) (and .cse33 (= 53 |ULTIMATE.start_main_~x~0#1|)) (and (= 2 |ULTIMATE.start_main_~x~0#1|) .cse0) (and .cse42 (= 68 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~x~0#1| 83) .cse40) (and (= 9 |ULTIMATE.start_main_~x~0#1|) .cse43) (and .cse27 (= 46 |ULTIMATE.start_main_~x~0#1|)) (and (= 30 |ULTIMATE.start_main_~x~0#1|) .cse41) (and .cse23 (= 66 |ULTIMATE.start_main_~x~0#1|)) (and .cse46 (= 52 |ULTIMATE.start_main_~x~0#1|)) (and .cse38 (= 95 |ULTIMATE.start_main_~x~0#1|)) (and .cse47 (= |ULTIMATE.start_main_~x~0#1| 20)) (and .cse36 (= 42 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~x~0#1| 18) .cse34) (and .cse48 (= |ULTIMATE.start_main_~x~0#1| 55)) (and .cse49 (= 62 |ULTIMATE.start_main_~x~0#1|)) (and .cse39 (= 41 |ULTIMATE.start_main_~x~0#1|)) (and .cse47 (= |ULTIMATE.start_main_~x~0#1| 80)) (and .cse26 (= |ULTIMATE.start_main_~x~0#1| 43)) (and (= |ULTIMATE.start_main_~x~0#1| 79) .cse19) (and (= 29 |ULTIMATE.start_main_~x~0#1|) .cse45) (and .cse35 (= |ULTIMATE.start_main_~x~0#1| 4)) (and .cse29 (= 84 |ULTIMATE.start_main_~x~0#1|)) (and (= |ULTIMATE.start_main_~x~0#1| 85) .cse2) (and (= |ULTIMATE.start_main_~x~0#1| 99) .cse9) (and (= |ULTIMATE.start_main_~x~0#1| 100) .cse44) (and (= |ULTIMATE.start_main_~y~0#1| 50) (= |ULTIMATE.start_main_~x~0#1| 50)) (and .cse5 (= 94 |ULTIMATE.start_main_~x~0#1|)) (and (= 81 |ULTIMATE.start_main_~x~0#1|) .cse24) (and .cse48 (= |ULTIMATE.start_main_~x~0#1| 45)) (and .cse46 (= |ULTIMATE.start_main_~x~0#1| 48)) (and (= |ULTIMATE.start_main_~x~0#1| 38) .cse49) (and (= 64 |ULTIMATE.start_main_~x~0#1|) .cse25) (and .cse4 (= 67 |ULTIMATE.start_main_~x~0#1|)))) [2023-11-06 22:15:51,645 INFO L899 garLoopResultBuilder]: For program point L28-3(lines 28 36) no Hoare annotation was computed. [2023-11-06 22:15:51,645 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-06 22:15:51,645 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-11-06 22:15:51,646 INFO L902 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2023-11-06 22:15:51,650 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1] [2023-11-06 22:15:51,653 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:15:51,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:15:51 BoogieIcfgContainer [2023-11-06 22:15:51,699 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:15:51,700 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:15:51,700 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:15:51,700 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:15:51,701 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:52" (3/4) ... [2023-11-06 22:15:51,704 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:15:51,713 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-06 22:15:51,714 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:15:51,714 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:15:51,715 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:15:51,783 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:15:51,784 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:15:51,784 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:15:51,785 INFO L158 Benchmark]: Toolchain (without parser) took 60413.30ms. Allocated memory was 146.8MB in the beginning and 677.4MB in the end (delta: 530.6MB). Free memory was 106.9MB in the beginning and 449.6MB in the end (delta: -342.7MB). Peak memory consumption was 189.9MB. Max. memory is 16.1GB. [2023-11-06 22:15:51,785 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 107.0MB. Free memory is still 60.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:15:51,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.15ms. Allocated memory is still 146.8MB. Free memory was 106.3MB in the beginning and 96.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:15:51,786 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.18ms. Allocated memory is still 146.8MB. Free memory was 96.4MB in the beginning and 95.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:15:51,787 INFO L158 Benchmark]: Boogie Preprocessor took 36.06ms. Allocated memory is still 146.8MB. Free memory was 95.0MB in the beginning and 93.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:15:51,788 INFO L158 Benchmark]: RCFGBuilder took 444.62ms. Allocated memory is still 146.8MB. Free memory was 93.7MB in the beginning and 84.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:15:51,788 INFO L158 Benchmark]: TraceAbstraction took 59421.27ms. Allocated memory was 146.8MB in the beginning and 677.4MB in the end (delta: 530.6MB). Free memory was 83.8MB in the beginning and 452.8MB in the end (delta: -368.9MB). Peak memory consumption was 318.6MB. Max. memory is 16.1GB. [2023-11-06 22:15:51,789 INFO L158 Benchmark]: Witness Printer took 84.41ms. Allocated memory is still 677.4MB. Free memory was 452.8MB in the beginning and 449.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:15:51,791 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 107.0MB. Free memory is still 60.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.15ms. Allocated memory is still 146.8MB. Free memory was 106.3MB in the beginning and 96.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.18ms. Allocated memory is still 146.8MB. Free memory was 96.4MB in the beginning and 95.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.06ms. Allocated memory is still 146.8MB. Free memory was 95.0MB in the beginning and 93.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.62ms. Allocated memory is still 146.8MB. Free memory was 93.7MB in the beginning and 84.0MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 59421.27ms. Allocated memory was 146.8MB in the beginning and 677.4MB in the end (delta: 530.6MB). Free memory was 83.8MB in the beginning and 452.8MB in the end (delta: -368.9MB). Peak memory consumption was 318.6MB. Max. memory is 16.1GB. * Witness Printer took 84.41ms. Allocated memory is still 677.4MB. Free memory was 452.8MB in the beginning and 449.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 59.3s, OverallIterations: 12, TraceHistogramMax: 102, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.1s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 255 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 255 mSDsluCounter, 16929 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16531 mSDsCounter, 192 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18846 IncrementalHoareTripleChecker+Invalid, 19038 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 192 mSolverCounterUnsat, 398 mSDtfsCounter, 18846 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2834 GetRequests, 2219 SyntacticMatches, 162 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17261 ImplicationChecksByTransitivity, 21.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4186occurred in iteration=11, InterpolantAutomatonStates: 373, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 952 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 106 NumberOfFragments, 710 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5535 FormulaSimplificationTreeSizeReduction, 1.7s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 38.0s InterpolantComputationTime, 2530 NumberOfCodeBlocks, 2452 NumberOfCodeBlocksAsserted, 208 NumberOfCheckSat, 3754 ConstructedInterpolants, 0 QuantifiedInterpolants, 10030 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2873 ConjunctsInSsa, 468 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 53726/131967 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2 == y) && (98 == x)) || ((44 == y) && (44 == x))) || ((x == 15) && (y == 15))) || ((y == 39) && (x == 39))) || ((y == 33) && (x == 33))) || ((6 == y) && (6 == x))) || ((35 == y) && (x == 65))) || ((y == 10) && (x == 90))) || ((87 == x) && (y == 13))) || ((x == 1) && (y == 1))) || ((x == 63) && (y == 37))) || ((23 == y) && (23 == x))) || ((x == 86) && (14 == y))) || ((y == 28) && (x == 28))) || ((x == 24) && (y == 24))) || ((x == 13) && (y == 13))) || ((x == 26) && (y == 26))) || ((7 == y) && (7 == x))) || ((23 == y) && (77 == x))) || ((y == 12) && (88 == x))) || ((56 == x) && (44 == y))) || ((x == 25) && (y == 25))) || ((21 == y) && (21 == x))) || ((22 == y) && (x == 78))) || ((40 == y) && (40 == x))) || ((92 == x) && (y == 8))) || ((x == 8) && (y == 8))) || ((x == 34) && (y == 34))) || ((y == 26) && (x == 74))) || ((19 == x) && (19 == y))) || ((x == 36) && (y == 36))) || ((y == 43) && (57 == x))) || ((x == 54) && (46 == y))) || ((x == 11) && (y == 11))) || ((16 == x) && (16 == y))) || ((69 == x) && (31 == y))) || ((49 == x) && (49 == y))) || ((76 == x) && (y == 24))) || ((x == 73) && (y == 27))) || ((47 == y) && (47 == x))) || ((35 == y) && (35 == x))) || ((51 == x) && (49 == y))) || ((y == 18) && (82 == x))) || ((y == 10) && (x == 10))) || ((x == 96) && (y == 4))) || ((x == 58) && (42 == y))) || ((3 == y) && (97 == x))) || ((x == 37) && (y == 37))) || ((x == 75) && (y == 25))) || ((89 == x) && (y == 11))) || ((3 == x) && (3 == y))) || ((5 == x) && (5 == y))) || ((41 == y) && (59 == x))) || ((y == 17) && (x == 17))) || ((y == 28) && (72 == x))) || ((x == 70) && (30 == y))) || ((14 == y) && (14 == x))) || ((y == 39) && (x == 61))) || ((32 == y) && (32 == x))) || ((x == 60) && (40 == y))) || ((22 == y) && (22 == x))) || ((91 == x) && (9 == y))) || ((7 == y) && (x == 93))) || ((31 == x) && (31 == y))) || ((y == 27) && (x == 27))) || ((y == 0) && (x == 0))) || ((y == 12) && (x == 12))) || ((71 == x) && (29 == y))) || ((47 == y) && (53 == x))) || ((2 == x) && (2 == y))) || ((32 == y) && (68 == x))) || ((x == 83) && (y == 17))) || ((9 == x) && (9 == y))) || ((46 == y) && (46 == x))) || ((30 == x) && (30 == y))) || ((y == 34) && (66 == x))) || ((y == 48) && (52 == x))) || ((5 == y) && (95 == x))) || ((y == 20) && (x == 20))) || ((42 == y) && (42 == x))) || ((x == 18) && (y == 18))) || ((y == 45) && (x == 55))) || ((y == 38) && (62 == x))) || ((41 == y) && (41 == x))) || ((y == 20) && (x == 80))) || ((y == 43) && (x == 43))) || ((x == 79) && (21 == y))) || ((29 == x) && (29 == y))) || ((y == 4) && (x == 4))) || ((16 == y) && (84 == x))) || ((x == 85) && (y == 15))) || ((x == 99) && (y == 1))) || ((x == 100) && (y == 0))) || ((y == 50) && (x == 50))) || ((6 == y) && (94 == x))) || ((81 == x) && (19 == y))) || ((y == 45) && (x == 45))) || ((y == 48) && (x == 48))) || ((x == 38) && (y == 38))) || ((64 == x) && (y == 36))) || ((y == 33) && (67 == x))) RESULT: Ultimate proved your program to be correct! [2023-11-06 22:15:51,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5fce8f08-a607-4d2b-9350-42db0df2b7f7/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE