./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/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_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/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_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/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 c6eeba0e1c333b0671bbfcf3662adf7139859c1a965a716dd9b28c849af19818 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:50:32,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:50:33,024 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:50:33,030 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:50:33,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:50:33,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:50:33,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:50:33,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:50:33,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:50:33,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:50:33,062 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:50:33,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:50:33,063 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:50:33,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:50:33,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:50:33,065 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:50:33,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:50:33,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:50:33,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:50:33,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:50:33,068 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:50:33,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:50:33,069 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:50:33,070 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:50:33,070 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:50:33,071 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:50:33,072 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:50:33,072 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:50:33,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:33,073 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:50:33,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:50:33,074 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:50:33,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:50:33,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:50:33,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:50:33,076 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:50:33,077 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:50:33,077 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:50:33,078 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:50:33,078 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_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6eeba0e1c333b0671bbfcf3662adf7139859c1a965a716dd9b28c849af19818 [2023-11-06 22:50:33,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:50:33,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:50:33,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:50:33,405 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:50:33,406 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:50:33,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem13_label07.c [2023-11-06 22:50:36,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:50:37,364 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:50:37,365 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/sv-benchmarks/c/eca-rers2012/Problem13_label07.c [2023-11-06 22:50:37,413 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/data/98653c8a6/191d843e27ba43f0852574d439f951c7/FLAGb20ca21e0 [2023-11-06 22:50:37,431 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/data/98653c8a6/191d843e27ba43f0852574d439f951c7 [2023-11-06 22:50:37,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:50:37,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:50:37,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:37,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:50:37,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:50:37,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:37" (1/1) ... [2023-11-06 22:50:37,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb4aaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:37, skipping insertion in model container [2023-11-06 22:50:37,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:37" (1/1) ... [2023-11-06 22:50:37,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:50:37,938 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_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/sv-benchmarks/c/eca-rers2012/Problem13_label07.c[3249,3262] [2023-11-06 22:50:39,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:39,307 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:50:39,333 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_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/sv-benchmarks/c/eca-rers2012/Problem13_label07.c[3249,3262] [2023-11-06 22:50:40,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:40,104 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:50:40,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40 WrapperNode [2023-11-06 22:50:40,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:40,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:40,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:50:40,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:50:40,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:40,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:40,826 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5584 [2023-11-06 22:50:40,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:40,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:50:40,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:50:40,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:50:40,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:40,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:40,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:40,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:41,494 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:41,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:41,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:41,752 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:41,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:50:41,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:50:41,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:50:41,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:50:41,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (1/1) ... [2023-11-06 22:50:41,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:41,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:41,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:50:41,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:50:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:50:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:50:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:50:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:50:42,063 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:50:42,067 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:50:48,938 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:50:48,955 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:50:48,955 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:50:48,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:48 BoogieIcfgContainer [2023-11-06 22:50:48,960 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:50:48,962 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:50:48,962 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:50:48,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:50:48,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:50:37" (1/3) ... [2023-11-06 22:50:48,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd3ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:48, skipping insertion in model container [2023-11-06 22:50:48,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:40" (2/3) ... [2023-11-06 22:50:48,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd3ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:48, skipping insertion in model container [2023-11-06 22:50:48,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:48" (3/3) ... [2023-11-06 22:50:48,970 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07.c [2023-11-06 22:50:48,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:50:48,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:50:49,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:50:49,074 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;@b3027a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:50:49,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:50:49,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 22:50:49,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 22:50:49,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:49,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:49,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:49,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:49,102 INFO L85 PathProgramCache]: Analyzing trace with hash -85512855, now seen corresponding path program 1 times [2023-11-06 22:50:49,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:49,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859661685] [2023-11-06 22:50:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:49,439 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 22:50:49,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859661685] [2023-11-06 22:50:49,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859661685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:49,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:49,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:50:49,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543557993] [2023-11-06 22:50:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:49,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:49,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:49,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:49,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:49,493 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 3 states, 3 states have (on average 7.0) internal successors, (21), 2 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 22:50:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:55,493 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2023-11-06 22:50:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:55,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 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 21 [2023-11-06 22:50:55,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:55,533 INFO L225 Difference]: With dead ends: 3082 [2023-11-06 22:50:55,534 INFO L226 Difference]: Without dead ends: 1899 [2023-11-06 22:50:55,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 22:50:55,550 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1018 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:55,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-06 22:50:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2023-11-06 22:50:55,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2023-11-06 22:50:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 0 states have call successors, (0), 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 22:50:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2023-11-06 22:50:55,721 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 21 [2023-11-06 22:50:55,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:55,722 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2023-11-06 22:50:55,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 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 22:50:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2023-11-06 22:50:55,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:50:55,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:55,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:55,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:50:55,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:55,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:55,729 INFO L85 PathProgramCache]: Analyzing trace with hash -774471582, now seen corresponding path program 1 times [2023-11-06 22:50:55,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:55,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749766015] [2023-11-06 22:50:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:55,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749766015] [2023-11-06 22:50:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749766015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:56,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:56,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:50:56,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643351263] [2023-11-06 22:50:56,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:56,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:56,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:56,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:56,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:56,126 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 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 22:51:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:01,438 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2023-11-06 22:51:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:01,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 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) Word has length 86 [2023-11-06 22:51:01,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:01,462 INFO L225 Difference]: With dead ends: 5384 [2023-11-06 22:51:01,463 INFO L226 Difference]: Without dead ends: 3492 [2023-11-06 22:51:01,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 22:51:01,473 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:01,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-06 22:51:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2023-11-06 22:51:01,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2023-11-06 22:51:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 0 states have call successors, (0), 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 22:51:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2023-11-06 22:51:01,600 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 86 [2023-11-06 22:51:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:01,601 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2023-11-06 22:51:01,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 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 22:51:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2023-11-06 22:51:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-06 22:51:01,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:01,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:01,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:51:01,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:01,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:01,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1608126599, now seen corresponding path program 1 times [2023-11-06 22:51:01,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:01,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175904717] [2023-11-06 22:51:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:01,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:01,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:01,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175904717] [2023-11-06 22:51:01,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175904717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:01,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:01,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:01,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482983135] [2023-11-06 22:51:01,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:01,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:01,843 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:06,891 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2023-11-06 22:51:06,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:06,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-11-06 22:51:06,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:06,931 INFO L225 Difference]: With dead ends: 10169 [2023-11-06 22:51:06,932 INFO L226 Difference]: Without dead ends: 6680 [2023-11-06 22:51:06,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 22:51:06,938 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:06,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-06 22:51:06,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2023-11-06 22:51:07,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2023-11-06 22:51:07,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 0 states have call successors, (0), 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 22:51:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2023-11-06 22:51:07,113 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 88 [2023-11-06 22:51:07,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:07,117 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2023-11-06 22:51:07,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:07,118 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2023-11-06 22:51:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-06 22:51:07,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:07,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:07,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:51:07,127 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:07,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:07,132 INFO L85 PathProgramCache]: Analyzing trace with hash -881651307, now seen corresponding path program 1 times [2023-11-06 22:51:07,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:07,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004235864] [2023-11-06 22:51:07,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:07,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:07,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:07,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004235864] [2023-11-06 22:51:07,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004235864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:07,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:07,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378786782] [2023-11-06 22:51:07,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:07,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:07,691 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 22:51:11,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:11,620 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2023-11-06 22:51:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2023-11-06 22:51:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:11,663 INFO L225 Difference]: With dead ends: 14123 [2023-11-06 22:51:11,663 INFO L226 Difference]: Without dead ends: 7456 [2023-11-06 22:51:11,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 22:51:11,672 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:11,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-06 22:51:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2023-11-06 22:51:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2023-11-06 22:51:11,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 0 states have call successors, (0), 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 22:51:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2023-11-06 22:51:11,850 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 132 [2023-11-06 22:51:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:11,852 INFO L495 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2023-11-06 22:51:11,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 22:51:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2023-11-06 22:51:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-06 22:51:11,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:11,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:11,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:51:11,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:11,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:11,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2047768511, now seen corresponding path program 1 times [2023-11-06 22:51:11,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536197047] [2023-11-06 22:51:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:12,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:12,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536197047] [2023-11-06 22:51:12,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536197047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:12,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840121800] [2023-11-06 22:51:12,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:12,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:12,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:12,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:12,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:51:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:51:12,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 22:51:12,912 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:12,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840121800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:12,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:51:12,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-06 22:51:12,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148291401] [2023-11-06 22:51:12,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:12,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:12,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:12,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:12,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:51:12,915 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 22:51:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:17,662 INFO L93 Difference]: Finished difference Result 19656 states and 26991 transitions. [2023-11-06 22:51:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:17,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 22:51:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:17,718 INFO L225 Difference]: With dead ends: 19656 [2023-11-06 22:51:17,718 INFO L226 Difference]: Without dead ends: 12989 [2023-11-06 22:51:17,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:51:17,729 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 737 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:17,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 1222 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-06 22:51:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12989 states. [2023-11-06 22:51:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12989 to 12972. [2023-11-06 22:51:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.235910878112713) internal successors, (16031), 12971 states have internal predecessors, (16031), 0 states have call successors, (0), 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 22:51:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16031 transitions. [2023-11-06 22:51:18,026 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16031 transitions. Word has length 146 [2023-11-06 22:51:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:18,027 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16031 transitions. [2023-11-06 22:51:18,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 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 22:51:18,028 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16031 transitions. [2023-11-06 22:51:18,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-06 22:51:18,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:18,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:18,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:51:18,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:18,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:18,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:18,242 INFO L85 PathProgramCache]: Analyzing trace with hash 482289442, now seen corresponding path program 1 times [2023-11-06 22:51:18,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:18,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205267335] [2023-11-06 22:51:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:18,715 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-06 22:51:18,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205267335] [2023-11-06 22:51:18,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205267335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:18,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:18,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:18,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765228558] [2023-11-06 22:51:18,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:18,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:18,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:18,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:18,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:18,723 INFO L87 Difference]: Start difference. First operand 12972 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 22:51:23,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:23,181 INFO L93 Difference]: Finished difference Result 22792 states and 28651 transitions. [2023-11-06 22:51:23,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:23,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 233 [2023-11-06 22:51:23,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:23,211 INFO L225 Difference]: With dead ends: 22792 [2023-11-06 22:51:23,212 INFO L226 Difference]: Without dead ends: 12980 [2023-11-06 22:51:23,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 22:51:23,224 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:23,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1211 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-06 22:51:23,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12980 states. [2023-11-06 22:51:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12980 to 12972. [2023-11-06 22:51:23,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12972 states, 12971 states have (on average 1.2347544522396114) internal successors, (16016), 12971 states have internal predecessors, (16016), 0 states have call successors, (0), 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 22:51:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12972 states to 12972 states and 16016 transitions. [2023-11-06 22:51:23,512 INFO L78 Accepts]: Start accepts. Automaton has 12972 states and 16016 transitions. Word has length 233 [2023-11-06 22:51:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:23,513 INFO L495 AbstractCegarLoop]: Abstraction has 12972 states and 16016 transitions. [2023-11-06 22:51:23,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 22:51:23,514 INFO L276 IsEmpty]: Start isEmpty. Operand 12972 states and 16016 transitions. [2023-11-06 22:51:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2023-11-06 22:51:23,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:23,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:23,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:51:23,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:23,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:23,520 INFO L85 PathProgramCache]: Analyzing trace with hash 447702536, now seen corresponding path program 1 times [2023-11-06 22:51:23,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:23,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287260499] [2023-11-06 22:51:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:23,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287260499] [2023-11-06 22:51:23,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287260499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:23,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:23,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098385366] [2023-11-06 22:51:23,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:23,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:23,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:23,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:23,836 INFO L87 Difference]: Start difference. First operand 12972 states and 16016 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 22:51:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:28,535 INFO L93 Difference]: Finished difference Result 36166 states and 45134 transitions. [2023-11-06 22:51:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:28,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2023-11-06 22:51:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:28,589 INFO L225 Difference]: With dead ends: 36166 [2023-11-06 22:51:28,589 INFO L226 Difference]: Without dead ends: 23196 [2023-11-06 22:51:28,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:28,607 INFO L413 NwaCegarLoop]: 1851 mSDtfsCounter, 842 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:28,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1988 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:51:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2023-11-06 22:51:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 23191. [2023-11-06 22:51:29,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23191 states, 23190 states have (on average 1.1870202673566193) internal successors, (27527), 23190 states have internal predecessors, (27527), 0 states have call successors, (0), 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 22:51:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 27527 transitions. [2023-11-06 22:51:29,056 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 27527 transitions. Word has length 235 [2023-11-06 22:51:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:29,057 INFO L495 AbstractCegarLoop]: Abstraction has 23191 states and 27527 transitions. [2023-11-06 22:51:29,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 22:51:29,057 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 27527 transitions. [2023-11-06 22:51:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-06 22:51:29,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:29,062 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:29,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:51:29,063 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:29,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:29,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1872557880, now seen corresponding path program 1 times [2023-11-06 22:51:29,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:29,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104015416] [2023-11-06 22:51:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:29,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-06 22:51:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104015416] [2023-11-06 22:51:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104015416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:29,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:29,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527667559] [2023-11-06 22:51:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:29,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:29,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:29,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:29,326 INFO L87 Difference]: Start difference. First operand 23191 states and 27527 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:51:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:34,166 INFO L93 Difference]: Finished difference Result 56620 states and 68544 transitions. [2023-11-06 22:51:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:34,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 257 [2023-11-06 22:51:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:34,220 INFO L225 Difference]: With dead ends: 56620 [2023-11-06 22:51:34,220 INFO L226 Difference]: Without dead ends: 34218 [2023-11-06 22:51:34,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:34,250 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 882 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:34,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 928 Invalid, 3287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 22:51:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34218 states. [2023-11-06 22:51:34,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34218 to 33423. [2023-11-06 22:51:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33423 states, 33422 states have (on average 1.1722518101849082) internal successors, (39179), 33422 states have internal predecessors, (39179), 0 states have call successors, (0), 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 22:51:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33423 states to 33423 states and 39179 transitions. [2023-11-06 22:51:34,830 INFO L78 Accepts]: Start accepts. Automaton has 33423 states and 39179 transitions. Word has length 257 [2023-11-06 22:51:34,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:34,831 INFO L495 AbstractCegarLoop]: Abstraction has 33423 states and 39179 transitions. [2023-11-06 22:51:34,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 22:51:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 33423 states and 39179 transitions. [2023-11-06 22:51:34,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2023-11-06 22:51:34,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:34,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:34,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:51:34,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:34,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:34,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1002442702, now seen corresponding path program 1 times [2023-11-06 22:51:34,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:34,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485891718] [2023-11-06 22:51:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:34,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:35,180 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-06 22:51:35,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:35,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485891718] [2023-11-06 22:51:35,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485891718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:35,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:35,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:35,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874369669] [2023-11-06 22:51:35,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:35,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:35,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:35,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:35,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:35,185 INFO L87 Difference]: Start difference. First operand 33423 states and 39179 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 22:51:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:44,790 INFO L93 Difference]: Finished difference Result 118210 states and 138562 transitions. [2023-11-06 22:51:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:51:44,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 309 [2023-11-06 22:51:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:44,929 INFO L225 Difference]: With dead ends: 118210 [2023-11-06 22:51:44,929 INFO L226 Difference]: Without dead ends: 85576 [2023-11-06 22:51:44,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:44,956 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 1699 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 6259 mSolverCounterSat, 994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 7253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 6259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:44,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1065 Invalid, 7253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [994 Valid, 6259 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-11-06 22:51:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85576 states. [2023-11-06 22:51:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85576 to 82306. [2023-11-06 22:51:46,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82306 states, 82305 states have (on average 1.1536723163841809) internal successors, (94953), 82305 states have internal predecessors, (94953), 0 states have call successors, (0), 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 22:51:46,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82306 states to 82306 states and 94953 transitions. [2023-11-06 22:51:46,429 INFO L78 Accepts]: Start accepts. Automaton has 82306 states and 94953 transitions. Word has length 309 [2023-11-06 22:51:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:46,430 INFO L495 AbstractCegarLoop]: Abstraction has 82306 states and 94953 transitions. [2023-11-06 22:51:46,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 22:51:46,431 INFO L276 IsEmpty]: Start isEmpty. Operand 82306 states and 94953 transitions. [2023-11-06 22:51:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-11-06 22:51:46,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:46,440 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:46,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:51:46,441 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:46,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1986433391, now seen corresponding path program 1 times [2023-11-06 22:51:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:46,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574336617] [2023-11-06 22:51:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 166 proven. 113 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-06 22:51:48,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574336617] [2023-11-06 22:51:48,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574336617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786478051] [2023-11-06 22:51:48,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:48,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:48,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:48,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:48,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:51:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:48,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:51:48,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-06 22:51:48,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:48,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786478051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:48,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:51:48,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-06 22:51:48,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129601681] [2023-11-06 22:51:48,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:48,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:48,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:48,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:48,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:51:48,950 INFO L87 Difference]: Start difference. First operand 82306 states and 94953 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 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 22:51:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:51:53,686 INFO L93 Difference]: Finished difference Result 163812 states and 189102 transitions. [2023-11-06 22:51:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:53,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 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 327 [2023-11-06 22:51:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:51:53,802 INFO L225 Difference]: With dead ends: 163812 [2023-11-06 22:51:53,802 INFO L226 Difference]: Without dead ends: 82295 [2023-11-06 22:51:53,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:51:53,844 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1073 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:51:53,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 816 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 22:51:53,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82295 states. [2023-11-06 22:51:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82295 to 82292. [2023-11-06 22:51:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82292 states, 82291 states have (on average 1.1159057491098663) internal successors, (91829), 82291 states have internal predecessors, (91829), 0 states have call successors, (0), 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 22:51:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82292 states to 82292 states and 91829 transitions. [2023-11-06 22:51:55,525 INFO L78 Accepts]: Start accepts. Automaton has 82292 states and 91829 transitions. Word has length 327 [2023-11-06 22:51:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:51:55,526 INFO L495 AbstractCegarLoop]: Abstraction has 82292 states and 91829 transitions. [2023-11-06 22:51:55,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 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 22:51:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 82292 states and 91829 transitions. [2023-11-06 22:51:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-11-06 22:51:55,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:51:55,545 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:55,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:55,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:55,751 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:51:55,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:55,752 INFO L85 PathProgramCache]: Analyzing trace with hash -832537303, now seen corresponding path program 1 times [2023-11-06 22:51:55,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:51:55,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867509921] [2023-11-06 22:51:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:55,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:51:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 260 proven. 113 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-06 22:51:58,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:51:58,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867509921] [2023-11-06 22:51:58,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867509921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:51:58,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804509864] [2023-11-06 22:51:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:58,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:51:58,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:51:58,194 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:51:58,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:51:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:58,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:51:58,419 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-06 22:51:58,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:58,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804509864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:58,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:51:58,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-06 22:51:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745669715] [2023-11-06 22:51:58,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:58,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:58,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:51:58,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:58,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:51:58,647 INFO L87 Difference]: Start difference. First operand 82292 states and 91829 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 22:52:03,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:03,403 INFO L93 Difference]: Finished difference Result 163793 states and 182863 transitions. [2023-11-06 22:52:03,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:03,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 376 [2023-11-06 22:52:03,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:03,499 INFO L225 Difference]: With dead ends: 163793 [2023-11-06 22:52:03,499 INFO L226 Difference]: Without dead ends: 82290 [2023-11-06 22:52:03,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:52:03,538 INFO L413 NwaCegarLoop]: 1344 mSDtfsCounter, 1084 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2463 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:52:03,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1424 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2463 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 22:52:03,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82290 states. [2023-11-06 22:52:04,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82290 to 82289. [2023-11-06 22:52:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82289 states, 82288 states have (on average 1.0886277464514875) internal successors, (89581), 82288 states have internal predecessors, (89581), 0 states have call successors, (0), 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 22:52:05,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82289 states to 82289 states and 89581 transitions. [2023-11-06 22:52:05,033 INFO L78 Accepts]: Start accepts. Automaton has 82289 states and 89581 transitions. Word has length 376 [2023-11-06 22:52:05,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:05,050 INFO L495 AbstractCegarLoop]: Abstraction has 82289 states and 89581 transitions. [2023-11-06 22:52:05,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 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 22:52:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 82289 states and 89581 transitions. [2023-11-06 22:52:05,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2023-11-06 22:52:05,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:05,082 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:05,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:05,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:05,288 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:52:05,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:05,289 INFO L85 PathProgramCache]: Analyzing trace with hash -645209022, now seen corresponding path program 1 times [2023-11-06 22:52:05,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:05,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772070673] [2023-11-06 22:52:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:05,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-06 22:52:05,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:05,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772070673] [2023-11-06 22:52:05,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772070673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:05,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:05,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:52:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132538253] [2023-11-06 22:52:05,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:05,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:05,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:05,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:05,818 INFO L87 Difference]: Start difference. First operand 82289 states and 89581 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 22:52:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:12,211 INFO L93 Difference]: Finished difference Result 189767 states and 208222 transitions. [2023-11-06 22:52:12,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:12,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 377 [2023-11-06 22:52:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:12,352 INFO L225 Difference]: With dead ends: 189767 [2023-11-06 22:52:12,352 INFO L226 Difference]: Without dead ends: 108267 [2023-11-06 22:52:12,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:12,385 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 884 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 3349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:52:12,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 904 Invalid, 3349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-11-06 22:52:12,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108267 states. [2023-11-06 22:52:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108267 to 106674. [2023-11-06 22:52:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106674 states, 106673 states have (on average 1.092113280773954) internal successors, (116499), 106673 states have internal predecessors, (116499), 0 states have call successors, (0), 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 22:52:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106674 states to 106674 states and 116499 transitions. [2023-11-06 22:52:14,473 INFO L78 Accepts]: Start accepts. Automaton has 106674 states and 116499 transitions. Word has length 377 [2023-11-06 22:52:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:14,475 INFO L495 AbstractCegarLoop]: Abstraction has 106674 states and 116499 transitions. [2023-11-06 22:52:14,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 22:52:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 106674 states and 116499 transitions. [2023-11-06 22:52:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2023-11-06 22:52:14,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:14,488 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:14,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:52:14,488 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:52:14,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:14,489 INFO L85 PathProgramCache]: Analyzing trace with hash 307251648, now seen corresponding path program 1 times [2023-11-06 22:52:14,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:14,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769499135] [2023-11-06 22:52:14,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:14,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 246 proven. 110 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-06 22:52:16,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:16,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769499135] [2023-11-06 22:52:16,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769499135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:16,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493583714] [2023-11-06 22:52:16,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:16,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:16,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:16,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:16,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:52:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:16,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:52:16,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-06 22:52:18,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:52:18,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493583714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:18,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:52:18,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-06 22:52:18,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502025462] [2023-11-06 22:52:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:18,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:18,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:18,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:52:18,303 INFO L87 Difference]: Start difference. First operand 106674 states and 116499 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 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 22:52:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:24,025 INFO L93 Difference]: Finished difference Result 206271 states and 225611 transitions. [2023-11-06 22:52:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:24,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 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 410 [2023-11-06 22:52:24,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:24,172 INFO L225 Difference]: With dead ends: 206271 [2023-11-06 22:52:24,172 INFO L226 Difference]: Without dead ends: 110619 [2023-11-06 22:52:24,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:52:24,221 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 643 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:52:24,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1167 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-06 22:52:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110619 states. [2023-11-06 22:52:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110619 to 109035. [2023-11-06 22:52:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109035 states, 109034 states have (on average 1.0828365463983711) internal successors, (118066), 109034 states have internal predecessors, (118066), 0 states have call successors, (0), 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 22:52:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109035 states to 109035 states and 118066 transitions. [2023-11-06 22:52:26,062 INFO L78 Accepts]: Start accepts. Automaton has 109035 states and 118066 transitions. Word has length 410 [2023-11-06 22:52:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:26,062 INFO L495 AbstractCegarLoop]: Abstraction has 109035 states and 118066 transitions. [2023-11-06 22:52:26,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 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 22:52:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 109035 states and 118066 transitions. [2023-11-06 22:52:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2023-11-06 22:52:26,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:26,076 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:26,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:26,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:26,284 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:52:26,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:26,285 INFO L85 PathProgramCache]: Analyzing trace with hash -482627801, now seen corresponding path program 1 times [2023-11-06 22:52:26,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:26,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306695023] [2023-11-06 22:52:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:26,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-06 22:52:27,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:27,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306695023] [2023-11-06 22:52:27,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306695023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:27,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:27,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:52:27,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209185780] [2023-11-06 22:52:27,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:27,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:27,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:27,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:27,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:27,312 INFO L87 Difference]: Start difference. First operand 109035 states and 118066 transitions. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 22:52:34,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:34,073 INFO L93 Difference]: Finished difference Result 242480 states and 264083 transitions. [2023-11-06 22:52:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:34,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 469 [2023-11-06 22:52:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:34,278 INFO L225 Difference]: With dead ends: 242480 [2023-11-06 22:52:34,278 INFO L226 Difference]: Without dead ends: 132660 [2023-11-06 22:52:34,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:34,318 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 721 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 3162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:52:34,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1897 Invalid, 3162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-06 22:52:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132660 states. [2023-11-06 22:52:36,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132660 to 131070. [2023-11-06 22:52:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131070 states, 131069 states have (on average 1.0732057160732134) internal successors, (140664), 131069 states have internal predecessors, (140664), 0 states have call successors, (0), 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 22:52:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131070 states to 131070 states and 140664 transitions. [2023-11-06 22:52:36,639 INFO L78 Accepts]: Start accepts. Automaton has 131070 states and 140664 transitions. Word has length 469 [2023-11-06 22:52:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:36,640 INFO L495 AbstractCegarLoop]: Abstraction has 131070 states and 140664 transitions. [2023-11-06 22:52:36,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 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 22:52:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 131070 states and 140664 transitions. [2023-11-06 22:52:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2023-11-06 22:52:36,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:36,661 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:36,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:52:36,661 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:52:36,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:36,662 INFO L85 PathProgramCache]: Analyzing trace with hash -493778240, now seen corresponding path program 1 times [2023-11-06 22:52:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:36,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210464693] [2023-11-06 22:52:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:36,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 709 proven. 75 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-06 22:52:38,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:38,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210464693] [2023-11-06 22:52:38,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210464693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:38,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974927700] [2023-11-06 22:52:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:38,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:38,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:38,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:38,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:52:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:38,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:52:38,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 939 backedges. 847 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-06 22:52:40,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:52:40,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974927700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:40,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:52:40,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-06 22:52:40,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140116312] [2023-11-06 22:52:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:40,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:52:40,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:40,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:52:40,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:52:40,288 INFO L87 Difference]: Start difference. First operand 131070 states and 140664 transitions. Second operand has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 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 22:52:48,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:48,104 INFO L93 Difference]: Finished difference Result 248759 states and 267808 transitions. [2023-11-06 22:52:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:52:48,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 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 543 [2023-11-06 22:52:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:48,283 INFO L225 Difference]: With dead ends: 248759 [2023-11-06 22:52:48,283 INFO L226 Difference]: Without dead ends: 133437 [2023-11-06 22:52:48,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 543 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:52:48,337 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 1603 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 4444 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 4444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:52:48,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 905 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 4444 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-06 22:52:48,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133437 states. [2023-11-06 22:52:50,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133437 to 131853. [2023-11-06 22:52:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131853 states, 131852 states have (on average 1.072634468950035) internal successors, (141429), 131852 states have internal predecessors, (141429), 0 states have call successors, (0), 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 22:52:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131853 states to 131853 states and 141429 transitions. [2023-11-06 22:52:50,827 INFO L78 Accepts]: Start accepts. Automaton has 131853 states and 141429 transitions. Word has length 543 [2023-11-06 22:52:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:50,827 INFO L495 AbstractCegarLoop]: Abstraction has 131853 states and 141429 transitions. [2023-11-06 22:52:50,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 0 states have call successors, (0), 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 22:52:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 131853 states and 141429 transitions. [2023-11-06 22:52:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2023-11-06 22:52:50,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:50,852 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:50,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:51,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b8e7d4c-6965-4c70-bb01-9a24b5d93ce9/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:51,053 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:52:51,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1371945116, now seen corresponding path program 1 times [2023-11-06 22:52:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:51,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782045255] [2023-11-06 22:52:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:51,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1059 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2023-11-06 22:52:51,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:51,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782045255] [2023-11-06 22:52:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782045255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:51,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:51,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:52:51,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893132434] [2023-11-06 22:52:51,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:51,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:51,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:51,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:51,802 INFO L87 Difference]: Start difference. First operand 131853 states and 141429 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 22:52:59,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:59,193 INFO L93 Difference]: Finished difference Result 299143 states and 322738 transitions. [2023-11-06 22:52:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:59,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 601 [2023-11-06 22:52:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:59,412 INFO L225 Difference]: With dead ends: 299143 [2023-11-06 22:52:59,412 INFO L226 Difference]: Without dead ends: 179881 [2023-11-06 22:52:59,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:59,460 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 917 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 3182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 816 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:52:59,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 856 Invalid, 3182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [816 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-06 22:52:59,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179881 states. [2023-11-06 22:53:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179881 to 148376. [2023-11-06 22:53:02,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148376 states, 148375 states have (on average 1.0655231676495367) internal successors, (158097), 148375 states have internal predecessors, (158097), 0 states have call successors, (0), 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 22:53:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148376 states to 148376 states and 158097 transitions. [2023-11-06 22:53:02,481 INFO L78 Accepts]: Start accepts. Automaton has 148376 states and 158097 transitions. Word has length 601 [2023-11-06 22:53:02,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:02,482 INFO L495 AbstractCegarLoop]: Abstraction has 148376 states and 158097 transitions. [2023-11-06 22:53:02,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 22:53:02,482 INFO L276 IsEmpty]: Start isEmpty. Operand 148376 states and 158097 transitions. [2023-11-06 22:53:02,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-11-06 22:53:02,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:02,507 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:02,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:53:02,507 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:53:02,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash -318205576, now seen corresponding path program 1 times [2023-11-06 22:53:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:02,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708689731] [2023-11-06 22:53:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:02,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:03,815 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 599 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-06 22:53:03,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708689731] [2023-11-06 22:53:03,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708689731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:03,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:03,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:53:03,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430187702] [2023-11-06 22:53:03,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:03,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:53:03,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:03,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:53:03,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:03,819 INFO L87 Difference]: Start difference. First operand 148376 states and 158097 transitions. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 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 22:53:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:10,920 INFO L93 Difference]: Finished difference Result 327472 states and 351177 transitions. [2023-11-06 22:53:10,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:53:10,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 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 607 [2023-11-06 22:53:10,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:11,143 INFO L225 Difference]: With dead ends: 327472 [2023-11-06 22:53:11,143 INFO L226 Difference]: Without dead ends: 194844 [2023-11-06 22:53:11,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:53:11,190 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 1024 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 3261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:11,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 611 Invalid, 3261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-06 22:53:11,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194844 states.