./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83b9baf9f6deb0db64cb6e97ea77e31e0e6aa56bc46a9ba9c0c02a0377225524 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:32:49,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:32:49,806 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:32:49,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:32:49,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:32:49,850 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:32:49,851 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:32:49,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:32:49,853 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:32:49,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:32:49,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:32:49,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:32:49,861 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:32:49,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:32:49,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:32:49,864 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:32:49,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:32:49,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:32:49,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:32:49,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:32:49,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:32:49,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:32:49,868 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:32:49,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:32:49,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:32:49,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:32:49,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:32:49,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:32:49,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:49,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:32:49,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:32:49,874 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:32:49,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:32:49,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:32:49,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:32:49,875 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:32:49,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:32:49,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:32:49,876 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:32:49,877 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_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83b9baf9f6deb0db64cb6e97ea77e31e0e6aa56bc46a9ba9c0c02a0377225524 [2023-11-19 07:32:50,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:32:50,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:32:50,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:32:50,266 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:32:50,267 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:32:50,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/eca-rers2012/Problem03_label54.c [2023-11-19 07:32:53,447 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:32:53,891 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:32:53,891 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/sv-benchmarks/c/eca-rers2012/Problem03_label54.c [2023-11-19 07:32:53,916 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/data/24dbbb476/a88fb0b790914a53989203c32d999963/FLAG82a90b669 [2023-11-19 07:32:53,935 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/data/24dbbb476/a88fb0b790914a53989203c32d999963 [2023-11-19 07:32:53,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:32:53,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:32:53,947 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:53,947 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:32:53,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:32:53,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:53,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8f82ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:53, skipping insertion in model container [2023-11-19 07:32:53,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:53" (1/1) ... [2023-11-19 07:32:54,053 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:32:54,725 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_4fb0d214-897f-45a1-956b-e966a7958d66/sv-benchmarks/c/eca-rers2012/Problem03_label54.c[56627,56640] [2023-11-19 07:32:54,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:54,769 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:32:54,980 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_4fb0d214-897f-45a1-956b-e966a7958d66/sv-benchmarks/c/eca-rers2012/Problem03_label54.c[56627,56640] [2023-11-19 07:32:54,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:55,015 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:32:55,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55 WrapperNode [2023-11-19 07:32:55,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:55,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:55,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:32:55,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:32:55,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,178 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-11-19 07:32:55,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:55,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:32:55,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:32:55,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:32:55,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,323 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:32:55,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:32:55,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:32:55,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:32:55,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (1/1) ... [2023-11-19 07:32:55,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:55,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:55,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:55,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:32:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:32:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:32:55,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:32:55,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:32:55,581 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:32:55,583 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:32:57,666 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:32:57,681 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:32:57,681 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:32:57,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:57 BoogieIcfgContainer [2023-11-19 07:32:57,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:32:57,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:32:57,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:32:57,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:32:57,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:32:53" (1/3) ... [2023-11-19 07:32:57,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f9a394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:57, skipping insertion in model container [2023-11-19 07:32:57,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:55" (2/3) ... [2023-11-19 07:32:57,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f9a394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:57, skipping insertion in model container [2023-11-19 07:32:57,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:57" (3/3) ... [2023-11-19 07:32:57,698 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label54.c [2023-11-19 07:32:57,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:32:57,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:32:57,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:32:57,785 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c10cdd9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:32:57,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:32:57,792 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:32:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-19 07:32:57,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:32:57,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:32:57,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:32:57,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:32:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash -590757190, now seen corresponding path program 1 times [2023-11-19 07:32:57,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:32:57,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884054849] [2023-11-19 07:32:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:32:57,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:32:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:32:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:32:58,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:32:58,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884054849] [2023-11-19 07:32:58,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884054849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:32:58,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:32:58,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:32:58,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609910794] [2023-11-19 07:32:58,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:32:58,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:32:58,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:32:58,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:32:58,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:32:58,724 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:00,135 INFO L93 Difference]: Finished difference Result 829 states and 1478 transitions. [2023-11-19 07:33:00,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:00,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2023-11-19 07:33:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:00,169 INFO L225 Difference]: With dead ends: 829 [2023-11-19 07:33:00,169 INFO L226 Difference]: Without dead ends: 463 [2023-11-19 07:33:00,177 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 [2023-11-19 07:33:00,183 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 125 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:00,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 127 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:33:00,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-19 07:33:00,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2023-11-19 07:33:00,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 448 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 725 transitions. [2023-11-19 07:33:00,268 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 725 transitions. Word has length 166 [2023-11-19 07:33:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:00,270 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 725 transitions. [2023-11-19 07:33:00,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:00,270 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 725 transitions. [2023-11-19 07:33:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-19 07:33:00,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:00,276 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:33:00,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:33:00,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:00,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:00,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1027354506, now seen corresponding path program 1 times [2023-11-19 07:33:00,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:00,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459912296] [2023-11-19 07:33:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:00,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:00,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459912296] [2023-11-19 07:33:00,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459912296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:00,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:00,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624729794] [2023-11-19 07:33:00,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:00,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:00,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:00,784 INFO L87 Difference]: Start difference. First operand 449 states and 725 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:01,813 INFO L93 Difference]: Finished difference Result 1319 states and 2138 transitions. [2023-11-19 07:33:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:01,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-11-19 07:33:01,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:01,820 INFO L225 Difference]: With dead ends: 1319 [2023-11-19 07:33:01,820 INFO L226 Difference]: Without dead ends: 872 [2023-11-19 07:33:01,821 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 [2023-11-19 07:33:01,823 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:01,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 150 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:33:01,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-11-19 07:33:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2023-11-19 07:33:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2023-11-19 07:33:01,874 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 171 [2023-11-19 07:33:01,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:01,874 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2023-11-19 07:33:01,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2023-11-19 07:33:01,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-19 07:33:01,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:01,883 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2023-11-19 07:33:01,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:33:01,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:01,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2004202496, now seen corresponding path program 1 times [2023-11-19 07:33:01,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:01,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497988645] [2023-11-19 07:33:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:01,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:33:02,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:02,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497988645] [2023-11-19 07:33:02,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497988645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:02,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:02,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861550133] [2023-11-19 07:33:02,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:02,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:02,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:02,381 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:03,394 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2023-11-19 07:33:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2023-11-19 07:33:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:03,406 INFO L225 Difference]: With dead ends: 2554 [2023-11-19 07:33:03,406 INFO L226 Difference]: Without dead ends: 1686 [2023-11-19 07:33:03,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:03,409 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 232 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:03,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 417 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:33:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2023-11-19 07:33:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2023-11-19 07:33:03,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3363042186571599) internal successors, (2249), 1683 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2249 transitions. [2023-11-19 07:33:03,459 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2249 transitions. Word has length 186 [2023-11-19 07:33:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:03,460 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2249 transitions. [2023-11-19 07:33:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2249 transitions. [2023-11-19 07:33:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-19 07:33:03,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:03,466 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:03,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:33:03,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:03,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:03,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1182972067, now seen corresponding path program 1 times [2023-11-19 07:33:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:03,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042353938] [2023-11-19 07:33:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:03,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:03,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:03,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042353938] [2023-11-19 07:33:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042353938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:03,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:03,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021181516] [2023-11-19 07:33:03,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:03,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:03,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:03,899 INFO L87 Difference]: Start difference. First operand 1684 states and 2249 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:04,946 INFO L93 Difference]: Finished difference Result 5017 states and 6707 transitions. [2023-11-19 07:33:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:04,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2023-11-19 07:33:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:04,965 INFO L225 Difference]: With dead ends: 5017 [2023-11-19 07:33:04,966 INFO L226 Difference]: Without dead ends: 3335 [2023-11-19 07:33:04,968 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 [2023-11-19 07:33:04,981 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:04,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 123 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:33:04,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2023-11-19 07:33:05,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3326. [2023-11-19 07:33:05,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 1.3230075187969925) internal successors, (4399), 3325 states have internal predecessors, (4399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4399 transitions. [2023-11-19 07:33:05,078 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4399 transitions. Word has length 189 [2023-11-19 07:33:05,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:05,078 INFO L495 AbstractCegarLoop]: Abstraction has 3326 states and 4399 transitions. [2023-11-19 07:33:05,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4399 transitions. [2023-11-19 07:33:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-19 07:33:05,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:05,087 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:05,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:33:05,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:05,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:05,091 INFO L85 PathProgramCache]: Analyzing trace with hash -50841403, now seen corresponding path program 1 times [2023-11-19 07:33:05,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:05,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605017214] [2023-11-19 07:33:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:05,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:05,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605017214] [2023-11-19 07:33:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605017214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:05,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:05,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:05,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576608322] [2023-11-19 07:33:05,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:05,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:05,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:05,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:05,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:05,571 INFO L87 Difference]: Start difference. First operand 3326 states and 4399 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:06,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:06,599 INFO L93 Difference]: Finished difference Result 9928 states and 13145 transitions. [2023-11-19 07:33:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:06,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-11-19 07:33:06,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:06,635 INFO L225 Difference]: With dead ends: 9928 [2023-11-19 07:33:06,635 INFO L226 Difference]: Without dead ends: 6604 [2023-11-19 07:33:06,643 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 [2023-11-19 07:33:06,646 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:06,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 167 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:33:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2023-11-19 07:33:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 5768. [2023-11-19 07:33:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 1.3370903415987516) internal successors, (7711), 5767 states have internal predecessors, (7711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 7711 transitions. [2023-11-19 07:33:06,864 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 7711 transitions. Word has length 192 [2023-11-19 07:33:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:06,864 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 7711 transitions. [2023-11-19 07:33:06,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:06,865 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 7711 transitions. [2023-11-19 07:33:06,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-19 07:33:06,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:06,879 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:06,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:33:06,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:06,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash 564713384, now seen corresponding path program 1 times [2023-11-19 07:33:06,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:06,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571292036] [2023-11-19 07:33:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:06,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:33:07,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:07,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571292036] [2023-11-19 07:33:07,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571292036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:07,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:07,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:07,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078307694] [2023-11-19 07:33:07,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:07,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:07,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:07,315 INFO L87 Difference]: Start difference. First operand 5768 states and 7711 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:08,418 INFO L93 Difference]: Finished difference Result 14591 states and 19420 transitions. [2023-11-19 07:33:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:08,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 201 [2023-11-19 07:33:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:08,463 INFO L225 Difference]: With dead ends: 14591 [2023-11-19 07:33:08,464 INFO L226 Difference]: Without dead ends: 8825 [2023-11-19 07:33:08,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:08,473 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:08,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 421 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:33:08,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8825 states. [2023-11-19 07:33:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8825 to 8821. [2023-11-19 07:33:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 8820 states have (on average 1.2786848072562358) internal successors, (11278), 8820 states have internal predecessors, (11278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 11278 transitions. [2023-11-19 07:33:08,705 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 11278 transitions. Word has length 201 [2023-11-19 07:33:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:08,706 INFO L495 AbstractCegarLoop]: Abstraction has 8821 states and 11278 transitions. [2023-11-19 07:33:08,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 11278 transitions. [2023-11-19 07:33:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2023-11-19 07:33:08,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:08,732 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:08,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:33:08,732 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:08,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:08,733 INFO L85 PathProgramCache]: Analyzing trace with hash -567138394, now seen corresponding path program 1 times [2023-11-19 07:33:08,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:08,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850899886] [2023-11-19 07:33:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:08,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:09,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:09,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850899886] [2023-11-19 07:33:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850899886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838871769] [2023-11-19 07:33:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:09,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:09,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:09,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:09,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:33:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:09,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:09,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:33:09,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:09,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838871769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:09,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-11-19 07:33:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977238424] [2023-11-19 07:33:09,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:09,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:09,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:09,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:09,721 INFO L87 Difference]: Start difference. First operand 8821 states and 11278 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:11,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:11,019 INFO L93 Difference]: Finished difference Result 25787 states and 33056 transitions. [2023-11-19 07:33:11,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:11,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 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 203 [2023-11-19 07:33:11,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:11,085 INFO L225 Difference]: With dead ends: 25787 [2023-11-19 07:33:11,085 INFO L226 Difference]: Without dead ends: 16968 [2023-11-19 07:33:11,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:11,101 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 232 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:11,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 169 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:33:11,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16968 states. [2023-11-19 07:33:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16968 to 16559. [2023-11-19 07:33:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16559 states, 16558 states have (on average 1.2510568909288562) internal successors, (20715), 16558 states have internal predecessors, (20715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:11,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16559 states to 16559 states and 20715 transitions. [2023-11-19 07:33:11,625 INFO L78 Accepts]: Start accepts. Automaton has 16559 states and 20715 transitions. Word has length 203 [2023-11-19 07:33:11,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:11,625 INFO L495 AbstractCegarLoop]: Abstraction has 16559 states and 20715 transitions. [2023-11-19 07:33:11,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 16559 states and 20715 transitions. [2023-11-19 07:33:11,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-19 07:33:11,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:11,658 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:11,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:11,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:33:11,875 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:11,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1701117943, now seen corresponding path program 1 times [2023-11-19 07:33:11,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:11,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784523848] [2023-11-19 07:33:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:11,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:12,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:12,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784523848] [2023-11-19 07:33:12,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784523848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:12,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:12,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:33:12,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677899093] [2023-11-19 07:33:12,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:12,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:12,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:12,579 INFO L87 Difference]: Start difference. First operand 16559 states and 20715 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:13,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:13,936 INFO L93 Difference]: Finished difference Result 38428 states and 47966 transitions. [2023-11-19 07:33:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:13,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2023-11-19 07:33:13,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:13,990 INFO L225 Difference]: With dead ends: 38428 [2023-11-19 07:33:13,991 INFO L226 Difference]: Without dead ends: 21871 [2023-11-19 07:33:14,011 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 [2023-11-19 07:33:14,012 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:14,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 195 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:33:14,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21871 states. [2023-11-19 07:33:14,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21871 to 21857. [2023-11-19 07:33:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21857 states, 21856 states have (on average 1.2374633967789166) internal successors, (27046), 21856 states have internal predecessors, (27046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21857 states to 21857 states and 27046 transitions. [2023-11-19 07:33:14,628 INFO L78 Accepts]: Start accepts. Automaton has 21857 states and 27046 transitions. Word has length 207 [2023-11-19 07:33:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:14,628 INFO L495 AbstractCegarLoop]: Abstraction has 21857 states and 27046 transitions. [2023-11-19 07:33:14,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:14,629 INFO L276 IsEmpty]: Start isEmpty. Operand 21857 states and 27046 transitions. [2023-11-19 07:33:14,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2023-11-19 07:33:14,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:14,667 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:14,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:33:14,668 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:14,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash -325061122, now seen corresponding path program 1 times [2023-11-19 07:33:14,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:14,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815135610] [2023-11-19 07:33:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:14,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,407 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:15,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815135610] [2023-11-19 07:33:15,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815135610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:15,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159200075] [2023-11-19 07:33:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:15,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:15,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:15,413 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:15,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:33:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:33:15,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:33:16,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159200075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:16,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:16,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 07:33:16,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774733356] [2023-11-19 07:33:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:16,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:16,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:16,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:16,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:16,084 INFO L87 Difference]: Start difference. First operand 21857 states and 27046 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:17,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:17,596 INFO L93 Difference]: Finished difference Result 50637 states and 63488 transitions. [2023-11-19 07:33:17,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:17,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 214 [2023-11-19 07:33:17,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:17,695 INFO L225 Difference]: With dead ends: 50637 [2023-11-19 07:33:17,695 INFO L226 Difference]: Without dead ends: 29391 [2023-11-19 07:33:17,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:17,731 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 87 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:17,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 398 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:33:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29391 states. [2023-11-19 07:33:18,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29391 to 29378. [2023-11-19 07:33:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29378 states, 29377 states have (on average 1.2391326547979713) internal successors, (36402), 29377 states have internal predecessors, (36402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29378 states to 29378 states and 36402 transitions. [2023-11-19 07:33:18,400 INFO L78 Accepts]: Start accepts. Automaton has 29378 states and 36402 transitions. Word has length 214 [2023-11-19 07:33:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:18,401 INFO L495 AbstractCegarLoop]: Abstraction has 29378 states and 36402 transitions. [2023-11-19 07:33:18,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 29378 states and 36402 transitions. [2023-11-19 07:33:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-19 07:33:18,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:18,458 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:18,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:18,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:33:18,674 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:18,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash 749729365, now seen corresponding path program 1 times [2023-11-19 07:33:18,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:18,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937043823] [2023-11-19 07:33:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:18,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 07:33:18,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:18,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937043823] [2023-11-19 07:33:18,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937043823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:18,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:18,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727537931] [2023-11-19 07:33:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:18,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:18,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:18,923 INFO L87 Difference]: Start difference. First operand 29378 states and 36402 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:19,720 INFO L93 Difference]: Finished difference Result 81392 states and 100767 transitions. [2023-11-19 07:33:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:19,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 227 [2023-11-19 07:33:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:19,819 INFO L225 Difference]: With dead ends: 81392 [2023-11-19 07:33:19,819 INFO L226 Difference]: Without dead ends: 52625 [2023-11-19 07:33:19,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:19,849 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 332 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:19,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 963 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:33:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52625 states. [2023-11-19 07:33:21,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52625 to 52622. [2023-11-19 07:33:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52622 states, 52621 states have (on average 1.2153892932479429) internal successors, (63955), 52621 states have internal predecessors, (63955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52622 states to 52622 states and 63955 transitions. [2023-11-19 07:33:21,259 INFO L78 Accepts]: Start accepts. Automaton has 52622 states and 63955 transitions. Word has length 227 [2023-11-19 07:33:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:21,260 INFO L495 AbstractCegarLoop]: Abstraction has 52622 states and 63955 transitions. [2023-11-19 07:33:21,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 52622 states and 63955 transitions. [2023-11-19 07:33:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-11-19 07:33:21,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:21,606 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:21,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:33:21,607 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:21,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash -585838557, now seen corresponding path program 1 times [2023-11-19 07:33:21,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:21,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722083859] [2023-11-19 07:33:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:21,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-19 07:33:22,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:22,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722083859] [2023-11-19 07:33:22,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722083859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:22,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979996849] [2023-11-19 07:33:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:22,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:22,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:22,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:22,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:33:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:22,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:22,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:33:22,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:22,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979996849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:22,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:22,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 07:33:22,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172722429] [2023-11-19 07:33:22,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:22,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:22,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:22,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:22,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:22,907 INFO L87 Difference]: Start difference. First operand 52622 states and 63955 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:24,730 INFO L93 Difference]: Finished difference Result 124531 states and 153524 transitions. [2023-11-19 07:33:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:24,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 [2023-11-19 07:33:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:24,891 INFO L225 Difference]: With dead ends: 124531 [2023-11-19 07:33:24,891 INFO L226 Difference]: Without dead ends: 72114 [2023-11-19 07:33:24,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:24,939 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 224 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:24,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 172 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 07:33:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72114 states. [2023-11-19 07:33:26,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72114 to 71704. [2023-11-19 07:33:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71704 states, 71703 states have (on average 1.183353555639234) internal successors, (84850), 71703 states have internal predecessors, (84850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71704 states to 71704 states and 84850 transitions. [2023-11-19 07:33:26,458 INFO L78 Accepts]: Start accepts. Automaton has 71704 states and 84850 transitions. Word has length 233 [2023-11-19 07:33:26,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:26,458 INFO L495 AbstractCegarLoop]: Abstraction has 71704 states and 84850 transitions. [2023-11-19 07:33:26,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 71704 states and 84850 transitions. [2023-11-19 07:33:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2023-11-19 07:33:26,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:26,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:33:26,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-19 07:33:26,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:26,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:26,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:26,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1614905310, now seen corresponding path program 1 times [2023-11-19 07:33:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:26,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765554795] [2023-11-19 07:33:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:26,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 07:33:28,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:28,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765554795] [2023-11-19 07:33:28,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765554795] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146561767] [2023-11-19 07:33:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:28,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:28,267 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:28,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:33:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:28,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:33:28,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:33:28,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:33:28,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146561767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:28,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:33:28,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-19 07:33:28,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076059568] [2023-11-19 07:33:28,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:28,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:28,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:28,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:28,589 INFO L87 Difference]: Start difference. First operand 71704 states and 84850 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:30,232 INFO L93 Difference]: Finished difference Result 143207 states and 169481 transitions. [2023-11-19 07:33:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:30,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 234 [2023-11-19 07:33:30,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:30,357 INFO L225 Difference]: With dead ends: 143207 [2023-11-19 07:33:30,358 INFO L226 Difference]: Without dead ends: 71708 [2023-11-19 07:33:30,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:30,392 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 260 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:30,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 97 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 07:33:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71708 states. [2023-11-19 07:33:31,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71708 to 71704. [2023-11-19 07:33:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71704 states, 71703 states have (on average 1.1726287603029162) internal successors, (84081), 71703 states have internal predecessors, (84081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71704 states to 71704 states and 84081 transitions. [2023-11-19 07:33:31,946 INFO L78 Accepts]: Start accepts. Automaton has 71704 states and 84081 transitions. Word has length 234 [2023-11-19 07:33:31,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:33:31,946 INFO L495 AbstractCegarLoop]: Abstraction has 71704 states and 84081 transitions. [2023-11-19 07:33:31,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 71704 states and 84081 transitions. [2023-11-19 07:33:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-11-19 07:33:32,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:33:32,025 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-11-19 07:33:32,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:32,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fb0d214-897f-45a1-956b-e966a7958d66/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:32,241 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:33:32,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:32,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1686341063, now seen corresponding path program 1 times [2023-11-19 07:33:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:32,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659289038] [2023-11-19 07:33:32,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:32,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-19 07:33:32,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:32,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659289038] [2023-11-19 07:33:32,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659289038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:32,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:32,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:32,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249445497] [2023-11-19 07:33:32,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:32,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:33:32,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:33:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:32,790 INFO L87 Difference]: Start difference. First operand 71704 states and 84081 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:33:34,701 INFO L93 Difference]: Finished difference Result 154410 states and 181101 transitions. [2023-11-19 07:33:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:33:34,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2023-11-19 07:33:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:33:34,813 INFO L225 Difference]: With dead ends: 154410 [2023-11-19 07:33:34,813 INFO L226 Difference]: Without dead ends: 82911 [2023-11-19 07:33:34,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:33:34,860 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:33:34,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 388 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 07:33:34,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82911 states.