./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label56.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label56.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6817325bf2ee6430e3e6b828534a0d98b8fcced6b8f752a4847958e1d99aaba4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:29,012 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:29,130 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:53:29,142 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:29,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:29,189 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:29,190 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:29,191 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:29,192 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:29,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:29,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:29,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:29,203 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:29,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:29,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:53:29,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:29,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:29,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:29,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:29,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:53:29,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:29,209 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:53:29,209 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:29,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:53:29,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:29,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:29,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:29,212 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:29,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:29,213 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:29,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:29,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:53:29,214 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:29,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:29,215 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:29,215 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:53:29,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:29,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:29,216 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:29,216 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_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6817325bf2ee6430e3e6b828534a0d98b8fcced6b8f752a4847958e1d99aaba4 [2023-11-06 21:53:29,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:29,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:29,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:29,596 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:29,596 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:29,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/eca-rers2012/Problem17_label56.c [2023-11-06 21:53:32,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:33,242 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:33,242 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/sv-benchmarks/c/eca-rers2012/Problem17_label56.c [2023-11-06 21:53:33,277 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/data/6267b097c/8e11935232684abf9f4f1c728401dae3/FLAG0b4f9932f [2023-11-06 21:53:33,299 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/data/6267b097c/8e11935232684abf9f4f1c728401dae3 [2023-11-06 21:53:33,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:33,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:33,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:33,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:33,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:33,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:33" (1/1) ... [2023-11-06 21:53:33,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f55310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:33, skipping insertion in model container [2023-11-06 21:53:33,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:33" (1/1) ... [2023-11-06 21:53:33,441 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:33,793 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_3542f380-0326-4d23-b8c3-27c0f080e971/sv-benchmarks/c/eca-rers2012/Problem17_label56.c[9824,9837] [2023-11-06 21:53:34,495 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:34,521 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:53:34,584 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_3542f380-0326-4d23-b8c3-27c0f080e971/sv-benchmarks/c/eca-rers2012/Problem17_label56.c[9824,9837] [2023-11-06 21:53:34,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:34,997 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:53:34,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34 WrapperNode [2023-11-06 21:53:34,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:35,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:35,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:53:35,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:53:35,008 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:35,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:35,478 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2023-11-06 21:53:35,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:35,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:53:35,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:53:35,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:53:35,490 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:35,490 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:35,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:35,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:35,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:35,896 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:35,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:35,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:36,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:53:36,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:53:36,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:53:36,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:53:36,066 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (1/1) ... [2023-11-06 21:53:36,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:36,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:36,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:53:36,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:53:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:53:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:53:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:53:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:53:36,219 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:53:36,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:53:40,636 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:53:40,658 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:53:40,658 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:53:40,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:40 BoogieIcfgContainer [2023-11-06 21:53:40,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:53:40,666 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:53:40,666 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:53:40,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:53:40,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:33" (1/3) ... [2023-11-06 21:53:40,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8dfa0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:40, skipping insertion in model container [2023-11-06 21:53:40,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:34" (2/3) ... [2023-11-06 21:53:40,674 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8dfa0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:40, skipping insertion in model container [2023-11-06 21:53:40,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:40" (3/3) ... [2023-11-06 21:53:40,676 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label56.c [2023-11-06 21:53:40,697 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:53:40,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:53:40,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:53:40,794 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@68d56b01, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:53:40,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:53:40,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:40,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 21:53:40,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:40,821 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] [2023-11-06 21:53:40,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:40,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:40,827 INFO L85 PathProgramCache]: Analyzing trace with hash -215114758, now seen corresponding path program 1 times [2023-11-06 21:53:40,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346533901] [2023-11-06 21:53:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:40,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:41,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346533901] [2023-11-06 21:53:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346533901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:41,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:41,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285276739] [2023-11-06 21:53:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:41,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:41,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:41,498 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:45,675 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2023-11-06 21:53:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:45,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-06 21:53:45,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:45,701 INFO L225 Difference]: With dead ends: 1644 [2023-11-06 21:53:45,701 INFO L226 Difference]: Without dead ends: 977 [2023-11-06 21:53:45,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:45,711 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 422 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:45,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-06 21:53:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-11-06 21:53:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2023-11-06 21:53:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2023-11-06 21:53:45,809 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 66 [2023-11-06 21:53:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:45,813 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2023-11-06 21:53:45,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 2 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2023-11-06 21:53:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 21:53:45,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:45,821 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, 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] [2023-11-06 21:53:45,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:53:45,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:45,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash -181115598, now seen corresponding path program 1 times [2023-11-06 21:53:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:45,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856224270] [2023-11-06 21:53:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:45,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:46,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:46,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856224270] [2023-11-06 21:53:46,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856224270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:46,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:46,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:46,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065200901] [2023-11-06 21:53:46,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:46,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:46,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:46,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:46,171 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:49,562 INFO L93 Difference]: Finished difference Result 2815 states and 4382 transitions. [2023-11-06 21:53:49,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:49,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-11-06 21:53:49,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:49,576 INFO L225 Difference]: With dead ends: 2815 [2023-11-06 21:53:49,576 INFO L226 Difference]: Without dead ends: 1846 [2023-11-06 21:53:49,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:49,580 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:49,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 580 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-06 21:53:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2023-11-06 21:53:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1841. [2023-11-06 21:53:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.3505434782608696) internal successors, (2485), 1840 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:49,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2485 transitions. [2023-11-06 21:53:49,643 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2485 transitions. Word has length 133 [2023-11-06 21:53:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:49,644 INFO L495 AbstractCegarLoop]: Abstraction has 1841 states and 2485 transitions. [2023-11-06 21:53:49,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2485 transitions. [2023-11-06 21:53:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-06 21:53:49,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:49,650 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, 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] [2023-11-06 21:53:49,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:53:49,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:49,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:49,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1697817478, now seen corresponding path program 1 times [2023-11-06 21:53:49,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:49,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017681649] [2023-11-06 21:53:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:49,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:49,966 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:49,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:49,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017681649] [2023-11-06 21:53:49,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017681649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:49,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:49,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:53:49,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47551069] [2023-11-06 21:53:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:49,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:49,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:49,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:49,975 INFO L87 Difference]: Start difference. First operand 1841 states and 2485 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:53,248 INFO L93 Difference]: Finished difference Result 4552 states and 6285 transitions. [2023-11-06 21:53:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:53,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-11-06 21:53:53,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:53,298 INFO L225 Difference]: With dead ends: 4552 [2023-11-06 21:53:53,299 INFO L226 Difference]: Without dead ends: 2713 [2023-11-06 21:53:53,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:53,310 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 441 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:53,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-06 21:53:53,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2023-11-06 21:53:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2023-11-06 21:53:53,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3007380073800738) internal successors, (3525), 2710 states have internal predecessors, (3525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3525 transitions. [2023-11-06 21:53:53,387 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3525 transitions. Word has length 136 [2023-11-06 21:53:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:53,391 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3525 transitions. [2023-11-06 21:53:53,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3525 transitions. [2023-11-06 21:53:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-06 21:53:53,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:53,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:53,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:53:53,406 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:53,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:53,413 INFO L85 PathProgramCache]: Analyzing trace with hash 2021649633, now seen corresponding path program 1 times [2023-11-06 21:53:53,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:53,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913423289] [2023-11-06 21:53:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:53,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-06 21:53:53,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913423289] [2023-11-06 21:53:53,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913423289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:53,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:53,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:53:53,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477180836] [2023-11-06 21:53:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:53,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:53,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:53,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:53,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:53,743 INFO L87 Difference]: Start difference. First operand 2711 states and 3525 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:56,625 INFO L93 Difference]: Finished difference Result 7984 states and 10364 transitions. [2023-11-06 21:53:56,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:56,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2023-11-06 21:53:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:56,650 INFO L225 Difference]: With dead ends: 7984 [2023-11-06 21:53:56,650 INFO L226 Difference]: Without dead ends: 4421 [2023-11-06 21:53:56,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:56,657 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:56,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-06 21:53:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2023-11-06 21:53:56,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3566. [2023-11-06 21:53:56,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3565 states have (on average 1.1778401122019635) internal successors, (4199), 3565 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 4199 transitions. [2023-11-06 21:53:56,756 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 4199 transitions. Word has length 205 [2023-11-06 21:53:56,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:56,756 INFO L495 AbstractCegarLoop]: Abstraction has 3566 states and 4199 transitions. [2023-11-06 21:53:56,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:56,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 4199 transitions. [2023-11-06 21:53:56,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2023-11-06 21:53:56,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:56,760 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:56,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:53:56,761 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:56,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:56,761 INFO L85 PathProgramCache]: Analyzing trace with hash 546947933, now seen corresponding path program 1 times [2023-11-06 21:53:56,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:56,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141859657] [2023-11-06 21:53:56,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:56,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:53:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:53:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:53:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141859657] [2023-11-06 21:53:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141859657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:53:57,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:53:57,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:53:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234988637] [2023-11-06 21:53:57,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:53:57,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:53:57,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:53:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:53:57,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:57,169 INFO L87 Difference]: Start difference. First operand 3566 states and 4199 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:53:59,609 INFO L93 Difference]: Finished difference Result 9263 states and 11078 transitions. [2023-11-06 21:53:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:53:59,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2023-11-06 21:53:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:53:59,646 INFO L225 Difference]: With dead ends: 9263 [2023-11-06 21:53:59,646 INFO L226 Difference]: Without dead ends: 5699 [2023-11-06 21:53:59,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:53:59,653 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:53:59,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 21:53:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2023-11-06 21:53:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 5699. [2023-11-06 21:53:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5699 states, 5698 states have (on average 1.1597051597051597) internal successors, (6608), 5698 states have internal predecessors, (6608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:59,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5699 states to 5699 states and 6608 transitions. [2023-11-06 21:53:59,791 INFO L78 Accepts]: Start accepts. Automaton has 5699 states and 6608 transitions. Word has length 218 [2023-11-06 21:53:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:53:59,792 INFO L495 AbstractCegarLoop]: Abstraction has 5699 states and 6608 transitions. [2023-11-06 21:53:59,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:53:59,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5699 states and 6608 transitions. [2023-11-06 21:53:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-06 21:53:59,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:53:59,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:53:59,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:53:59,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:53:59,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:53:59,798 INFO L85 PathProgramCache]: Analyzing trace with hash 754737944, now seen corresponding path program 1 times [2023-11-06 21:53:59,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:53:59,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431487868] [2023-11-06 21:53:59,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:53:59,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:53:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:00,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431487868] [2023-11-06 21:54:00,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431487868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:00,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120409971] [2023-11-06 21:54:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:00,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:00,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:00,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:54:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:00,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:54:00,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 127 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:00,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:01,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120409971] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:01,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:54:01,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-11-06 21:54:01,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631703094] [2023-11-06 21:54:01,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:01,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:01,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:01,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:01,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:01,244 INFO L87 Difference]: Start difference. First operand 5699 states and 6608 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:05,829 INFO L93 Difference]: Finished difference Result 16961 states and 19953 transitions. [2023-11-06 21:54:05,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:05,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2023-11-06 21:54:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:05,885 INFO L225 Difference]: With dead ends: 16961 [2023-11-06 21:54:05,886 INFO L226 Difference]: Without dead ends: 10384 [2023-11-06 21:54:05,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:05,902 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1048 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2183 mSolverCounterSat, 1043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1043 IncrementalHoareTripleChecker+Valid, 2183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:05,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 152 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1043 Valid, 2183 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-06 21:54:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10384 states. [2023-11-06 21:54:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10384 to 10379. [2023-11-06 21:54:06,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 10378 states have (on average 1.1553285796878012) internal successors, (11990), 10378 states have internal predecessors, (11990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 11990 transitions. [2023-11-06 21:54:06,145 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 11990 transitions. Word has length 220 [2023-11-06 21:54:06,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:06,145 INFO L495 AbstractCegarLoop]: Abstraction has 10379 states and 11990 transitions. [2023-11-06 21:54:06,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 11990 transitions. [2023-11-06 21:54:06,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2023-11-06 21:54:06,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:06,152 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:06,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:06,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 21:54:06,360 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:06,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:06,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1820760982, now seen corresponding path program 1 times [2023-11-06 21:54:06,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:06,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143028415] [2023-11-06 21:54:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:06,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 191 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143028415] [2023-11-06 21:54:07,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143028415] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564878029] [2023-11-06 21:54:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:07,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:07,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:07,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:07,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:54:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:07,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:54:07,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 268 proven. 73 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 21:54:07,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 21:54:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564878029] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:07,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:54:07,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2023-11-06 21:54:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838762114] [2023-11-06 21:54:07,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:07,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:07,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:07,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:07,942 INFO L87 Difference]: Start difference. First operand 10379 states and 11990 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:12,282 INFO L93 Difference]: Finished difference Result 28865 states and 33388 transitions. [2023-11-06 21:54:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 294 [2023-11-06 21:54:12,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:12,346 INFO L225 Difference]: With dead ends: 28865 [2023-11-06 21:54:12,347 INFO L226 Difference]: Without dead ends: 18488 [2023-11-06 21:54:12,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:12,360 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 882 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:12,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 171 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-06 21:54:12,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18488 states. [2023-11-06 21:54:12,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18488 to 18482. [2023-11-06 21:54:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18482 states, 18481 states have (on average 1.1429035225366593) internal successors, (21122), 18481 states have internal predecessors, (21122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:12,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18482 states to 18482 states and 21122 transitions. [2023-11-06 21:54:12,733 INFO L78 Accepts]: Start accepts. Automaton has 18482 states and 21122 transitions. Word has length 294 [2023-11-06 21:54:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:12,733 INFO L495 AbstractCegarLoop]: Abstraction has 18482 states and 21122 transitions. [2023-11-06 21:54:12,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:12,735 INFO L276 IsEmpty]: Start isEmpty. Operand 18482 states and 21122 transitions. [2023-11-06 21:54:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-06 21:54:12,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:12,746 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-11-06 21:54:12,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 21:54:12,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 21:54:12,953 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:12,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash -729878076, now seen corresponding path program 1 times [2023-11-06 21:54:12,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:12,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152778828] [2023-11-06 21:54:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:12,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 550 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-06 21:54:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152778828] [2023-11-06 21:54:13,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152778828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:13,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:13,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:13,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184804310] [2023-11-06 21:54:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:13,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:13,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:13,621 INFO L87 Difference]: Start difference. First operand 18482 states and 21122 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:16,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:16,664 INFO L93 Difference]: Finished difference Result 50636 states and 57339 transitions. [2023-11-06 21:54:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:16,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 399 [2023-11-06 21:54:16,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:16,735 INFO L225 Difference]: With dead ends: 50636 [2023-11-06 21:54:16,736 INFO L226 Difference]: Without dead ends: 32156 [2023-11-06 21:54:16,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:16,757 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 426 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:16,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 669 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-06 21:54:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32156 states. [2023-11-06 21:54:17,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32156 to 29570. [2023-11-06 21:54:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29570 states, 29569 states have (on average 1.131117048260002) internal successors, (33446), 29569 states have internal predecessors, (33446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29570 states to 29570 states and 33446 transitions. [2023-11-06 21:54:17,312 INFO L78 Accepts]: Start accepts. Automaton has 29570 states and 33446 transitions. Word has length 399 [2023-11-06 21:54:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:17,315 INFO L495 AbstractCegarLoop]: Abstraction has 29570 states and 33446 transitions. [2023-11-06 21:54:17,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 29570 states and 33446 transitions. [2023-11-06 21:54:17,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2023-11-06 21:54:17,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:17,338 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 21:54:17,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:54:17,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:17,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:17,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1745983289, now seen corresponding path program 1 times [2023-11-06 21:54:17,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:17,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415142660] [2023-11-06 21:54:17,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:17,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 567 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-06 21:54:18,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:18,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415142660] [2023-11-06 21:54:18,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415142660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:18,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:18,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:18,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490028028] [2023-11-06 21:54:18,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:18,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:18,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:18,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:18,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:18,006 INFO L87 Difference]: Start difference. First operand 29570 states and 33446 transitions. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:20,892 INFO L93 Difference]: Finished difference Result 68521 states and 77908 transitions. [2023-11-06 21:54:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:20,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 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 400 [2023-11-06 21:54:20,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:20,974 INFO L225 Difference]: With dead ends: 68521 [2023-11-06 21:54:20,974 INFO L226 Difference]: Without dead ends: 38952 [2023-11-06 21:54:21,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:21,002 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 436 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:21,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 642 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 21:54:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38952 states. [2023-11-06 21:54:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38952 to 36818. [2023-11-06 21:54:21,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36818 states, 36817 states have (on average 1.1341228236955754) internal successors, (41755), 36817 states have internal predecessors, (41755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36818 states to 36818 states and 41755 transitions. [2023-11-06 21:54:21,822 INFO L78 Accepts]: Start accepts. Automaton has 36818 states and 41755 transitions. Word has length 400 [2023-11-06 21:54:21,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:21,823 INFO L495 AbstractCegarLoop]: Abstraction has 36818 states and 41755 transitions. [2023-11-06 21:54:21,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 36818 states and 41755 transitions. [2023-11-06 21:54:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-11-06 21:54:21,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:21,838 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:21,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:54:21,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:21,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:21,840 INFO L85 PathProgramCache]: Analyzing trace with hash -898319440, now seen corresponding path program 1 times [2023-11-06 21:54:21,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:21,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782858568] [2023-11-06 21:54:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:21,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 21:54:22,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:22,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782858568] [2023-11-06 21:54:22,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782858568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:22,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:22,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058247251] [2023-11-06 21:54:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:22,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:22,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:22,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:22,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:22,625 INFO L87 Difference]: Start difference. First operand 36818 states and 41755 transitions. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:26,813 INFO L93 Difference]: Finished difference Result 99668 states and 112882 transitions. [2023-11-06 21:54:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:26,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 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 404 [2023-11-06 21:54:26,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:26,920 INFO L225 Difference]: With dead ends: 99668 [2023-11-06 21:54:26,920 INFO L226 Difference]: Without dead ends: 62852 [2023-11-06 21:54:26,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:26,951 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 818 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:26,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 199 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-06 21:54:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62852 states. [2023-11-06 21:54:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62852 to 57736. [2023-11-06 21:54:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57736 states, 57735 states have (on average 1.1359660517883432) internal successors, (65585), 57735 states have internal predecessors, (65585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57736 states to 57736 states and 65585 transitions. [2023-11-06 21:54:28,144 INFO L78 Accepts]: Start accepts. Automaton has 57736 states and 65585 transitions. Word has length 404 [2023-11-06 21:54:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:28,144 INFO L495 AbstractCegarLoop]: Abstraction has 57736 states and 65585 transitions. [2023-11-06 21:54:28,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:28,145 INFO L276 IsEmpty]: Start isEmpty. Operand 57736 states and 65585 transitions. [2023-11-06 21:54:28,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2023-11-06 21:54:28,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:28,154 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:28,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:54:28,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:28,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:28,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2027173808, now seen corresponding path program 1 times [2023-11-06 21:54:28,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:28,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205323777] [2023-11-06 21:54:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:28,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:28,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:28,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205323777] [2023-11-06 21:54:28,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205323777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:28,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:28,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:28,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279277210] [2023-11-06 21:54:28,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:28,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:28,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:28,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:28,865 INFO L87 Difference]: Start difference. First operand 57736 states and 65585 transitions. Second operand has 4 states, 4 states have (on average 101.25) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:32,454 INFO L93 Difference]: Finished difference Result 120145 states and 136110 transitions. [2023-11-06 21:54:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:32,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 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 405 [2023-11-06 21:54:32,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:32,535 INFO L225 Difference]: With dead ends: 120145 [2023-11-06 21:54:32,535 INFO L226 Difference]: Without dead ends: 61986 [2023-11-06 21:54:32,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:32,565 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 546 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:32,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 249 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 21:54:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61986 states. [2023-11-06 21:54:33,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61986 to 58161. [2023-11-06 21:54:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58161 states, 58160 states have (on average 1.1350068775790922) internal successors, (66012), 58160 states have internal predecessors, (66012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58161 states to 58161 states and 66012 transitions. [2023-11-06 21:54:33,722 INFO L78 Accepts]: Start accepts. Automaton has 58161 states and 66012 transitions. Word has length 405 [2023-11-06 21:54:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:33,723 INFO L495 AbstractCegarLoop]: Abstraction has 58161 states and 66012 transitions. [2023-11-06 21:54:33,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.25) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:33,724 INFO L276 IsEmpty]: Start isEmpty. Operand 58161 states and 66012 transitions. [2023-11-06 21:54:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2023-11-06 21:54:33,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:33,737 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-11-06 21:54:33,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:54:33,737 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:33,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:33,738 INFO L85 PathProgramCache]: Analyzing trace with hash -626004042, now seen corresponding path program 1 times [2023-11-06 21:54:33,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:33,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435819983] [2023-11-06 21:54:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 403 proven. 64 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-06 21:54:35,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:35,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435819983] [2023-11-06 21:54:35,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435819983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:35,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926445239] [2023-11-06 21:54:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:35,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:54:35,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:35,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:54:35,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:54:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:35,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:54:35,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:54:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 403 proven. 64 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-06 21:54:35,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:54:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-11-06 21:54:36,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926445239] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:54:36,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:54:36,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-06 21:54:36,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846172363] [2023-11-06 21:54:36,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:36,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:36,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:36,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:36,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:36,245 INFO L87 Difference]: Start difference. First operand 58161 states and 66012 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:39,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:39,461 INFO L93 Difference]: Finished difference Result 118856 states and 134745 transitions. [2023-11-06 21:54:39,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:39,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 419 [2023-11-06 21:54:39,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:39,543 INFO L225 Difference]: With dead ends: 118856 [2023-11-06 21:54:39,543 INFO L226 Difference]: Without dead ends: 60690 [2023-11-06 21:54:39,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 835 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:39,572 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 423 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:39,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 713 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 21:54:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60690 states. [2023-11-06 21:54:40,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60690 to 60220. [2023-11-06 21:54:40,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60220 states, 60219 states have (on average 1.1171391089191118) internal successors, (67273), 60219 states have internal predecessors, (67273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60220 states to 60220 states and 67273 transitions. [2023-11-06 21:54:40,967 INFO L78 Accepts]: Start accepts. Automaton has 60220 states and 67273 transitions. Word has length 419 [2023-11-06 21:54:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:40,968 INFO L495 AbstractCegarLoop]: Abstraction has 60220 states and 67273 transitions. [2023-11-06 21:54:40,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 60220 states and 67273 transitions. [2023-11-06 21:54:41,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 633 [2023-11-06 21:54:41,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:41,022 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:41,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:54:41,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3542f380-0326-4d23-b8c3-27c0f080e971/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 21:54:41,229 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:41,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1908444143, now seen corresponding path program 1 times [2023-11-06 21:54:41,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728072767] [2023-11-06 21:54:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:41,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2023-11-06 21:54:42,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:42,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728072767] [2023-11-06 21:54:42,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728072767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:42,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:42,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:42,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567072286] [2023-11-06 21:54:42,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:42,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:42,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:42,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:42,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:42,169 INFO L87 Difference]: Start difference. First operand 60220 states and 67273 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:45,103 INFO L93 Difference]: Finished difference Result 131517 states and 146693 transitions. [2023-11-06 21:54:45,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:45,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 632 [2023-11-06 21:54:45,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:45,200 INFO L225 Difference]: With dead ends: 131517 [2023-11-06 21:54:45,200 INFO L226 Difference]: Without dead ends: 70024 [2023-11-06 21:54:45,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:45,267 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 384 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:45,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 814 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 21:54:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70024 states. [2023-11-06 21:54:46,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70024 to 69159. [2023-11-06 21:54:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69159 states, 69158 states have (on average 1.1079990745828392) internal successors, (76627), 69158 states have internal predecessors, (76627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:46,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69159 states to 69159 states and 76627 transitions. [2023-11-06 21:54:46,438 INFO L78 Accepts]: Start accepts. Automaton has 69159 states and 76627 transitions. Word has length 632 [2023-11-06 21:54:46,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:46,439 INFO L495 AbstractCegarLoop]: Abstraction has 69159 states and 76627 transitions. [2023-11-06 21:54:46,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:46,440 INFO L276 IsEmpty]: Start isEmpty. Operand 69159 states and 76627 transitions. [2023-11-06 21:54:46,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 644 [2023-11-06 21:54:46,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:46,682 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:54:46,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:54:46,683 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:46,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:46,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1905884555, now seen corresponding path program 1 times [2023-11-06 21:54:46,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:46,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672142101] [2023-11-06 21:54:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:46,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-11-06 21:54:47,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:47,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672142101] [2023-11-06 21:54:47,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672142101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:47,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:47,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:47,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705209722] [2023-11-06 21:54:47,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:47,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:47,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:47,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:47,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:47,234 INFO L87 Difference]: Start difference. First operand 69159 states and 76627 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:50,276 INFO L93 Difference]: Finished difference Result 145547 states and 161535 transitions. [2023-11-06 21:54:50,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:50,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 643 [2023-11-06 21:54:50,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:50,373 INFO L225 Difference]: With dead ends: 145547 [2023-11-06 21:54:50,373 INFO L226 Difference]: Without dead ends: 76387 [2023-11-06 21:54:50,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:50,412 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 499 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:50,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 676 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 21:54:50,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76387 states. [2023-11-06 21:54:51,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76387 to 76382. [2023-11-06 21:54:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76382 states, 76381 states have (on average 1.1021589138660137) internal successors, (84184), 76381 states have internal predecessors, (84184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76382 states to 76382 states and 84184 transitions. [2023-11-06 21:54:51,688 INFO L78 Accepts]: Start accepts. Automaton has 76382 states and 84184 transitions. Word has length 643 [2023-11-06 21:54:51,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:51,689 INFO L495 AbstractCegarLoop]: Abstraction has 76382 states and 84184 transitions. [2023-11-06 21:54:51,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 76382 states and 84184 transitions. [2023-11-06 21:54:51,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2023-11-06 21:54:51,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:51,724 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:51,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:54:51,725 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:51,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:51,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1235888099, now seen corresponding path program 1 times [2023-11-06 21:54:51,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:51,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022203287] [2023-11-06 21:54:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:51,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2023-11-06 21:54:53,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:53,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022203287] [2023-11-06 21:54:53,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022203287] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:53,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:53,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:53,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491865628] [2023-11-06 21:54:53,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:53,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:53,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:53,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:53,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:53,474 INFO L87 Difference]: Start difference. First operand 76382 states and 84184 transitions. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:57,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:54:57,139 INFO L93 Difference]: Finished difference Result 152418 states and 167977 transitions. [2023-11-06 21:54:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:57,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 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 749 [2023-11-06 21:54:57,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:54:57,228 INFO L225 Difference]: With dead ends: 152418 [2023-11-06 21:54:57,228 INFO L226 Difference]: Without dead ends: 76365 [2023-11-06 21:54:57,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:57,248 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 847 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 2214 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:54:57,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 157 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2214 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 21:54:57,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76365 states. [2023-11-06 21:54:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76365 to 74229. [2023-11-06 21:54:58,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74229 states, 74228 states have (on average 1.0969849652422266) internal successors, (81427), 74228 states have internal predecessors, (81427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74229 states to 74229 states and 81427 transitions. [2023-11-06 21:54:58,286 INFO L78 Accepts]: Start accepts. Automaton has 74229 states and 81427 transitions. Word has length 749 [2023-11-06 21:54:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:54:58,287 INFO L495 AbstractCegarLoop]: Abstraction has 74229 states and 81427 transitions. [2023-11-06 21:54:58,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand 74229 states and 81427 transitions. [2023-11-06 21:54:58,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-06 21:54:58,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:54:58,336 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:58,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:54:58,337 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:54:58,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1951325608, now seen corresponding path program 1 times [2023-11-06 21:54:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:58,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448622071] [2023-11-06 21:54:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:58,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-11-06 21:54:59,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448622071] [2023-11-06 21:54:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448622071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:59,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:59,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500321838] [2023-11-06 21:54:59,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:59,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:59,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:59,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:59,310 INFO L87 Difference]: Start difference. First operand 74229 states and 81427 transitions. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:02,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:02,317 INFO L93 Difference]: Finished difference Result 155290 states and 170402 transitions. [2023-11-06 21:55:02,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:02,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 816 [2023-11-06 21:55:02,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:02,414 INFO L225 Difference]: With dead ends: 155290 [2023-11-06 21:55:02,414 INFO L226 Difference]: Without dead ends: 81488 [2023-11-06 21:55:02,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:02,448 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 483 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:02,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 242 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-06 21:55:02,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81488 states. [2023-11-06 21:55:03,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81488 to 81034. [2023-11-06 21:55:03,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81034 states, 81033 states have (on average 1.089802919798107) internal successors, (88310), 81033 states have internal predecessors, (88310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81034 states to 81034 states and 88310 transitions. [2023-11-06 21:55:03,756 INFO L78 Accepts]: Start accepts. Automaton has 81034 states and 88310 transitions. Word has length 816 [2023-11-06 21:55:03,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:03,756 INFO L495 AbstractCegarLoop]: Abstraction has 81034 states and 88310 transitions. [2023-11-06 21:55:03,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:03,757 INFO L276 IsEmpty]: Start isEmpty. Operand 81034 states and 88310 transitions. [2023-11-06 21:55:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 873 [2023-11-06 21:55:03,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:03,809 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:03,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 21:55:03,810 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:03,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:03,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2081068811, now seen corresponding path program 1 times [2023-11-06 21:55:03,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:03,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656768036] [2023-11-06 21:55:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:03,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 931 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-06 21:55:05,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:05,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656768036] [2023-11-06 21:55:05,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656768036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:05,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:05,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:55:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980366402] [2023-11-06 21:55:05,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:05,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:55:05,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:05,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:55:05,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:55:05,319 INFO L87 Difference]: Start difference. First operand 81034 states and 88310 transitions. Second operand has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:09,528 INFO L93 Difference]: Finished difference Result 180791 states and 196707 transitions. [2023-11-06 21:55:09,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:55:09,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 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 872 [2023-11-06 21:55:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:09,645 INFO L225 Difference]: With dead ends: 180791 [2023-11-06 21:55:09,645 INFO L226 Difference]: Without dead ends: 100184 [2023-11-06 21:55:09,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:55:09,681 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 347 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 2438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:09,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 638 Invalid, 2438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-06 21:55:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100184 states. [2023-11-06 21:55:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100184 to 96347. [2023-11-06 21:55:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96347 states, 96346 states have (on average 1.0879123160276503) internal successors, (104816), 96346 states have internal predecessors, (104816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96347 states to 96347 states and 104816 transitions. [2023-11-06 21:55:11,523 INFO L78 Accepts]: Start accepts. Automaton has 96347 states and 104816 transitions. Word has length 872 [2023-11-06 21:55:11,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:11,524 INFO L495 AbstractCegarLoop]: Abstraction has 96347 states and 104816 transitions. [2023-11-06 21:55:11,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:11,525 INFO L276 IsEmpty]: Start isEmpty. Operand 96347 states and 104816 transitions. [2023-11-06 21:55:11,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2023-11-06 21:55:11,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:11,580 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:11,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 21:55:11,581 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:11,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash -986437759, now seen corresponding path program 1 times [2023-11-06 21:55:11,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:11,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866520072] [2023-11-06 21:55:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:11,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 721 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-06 21:55:13,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:13,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866520072] [2023-11-06 21:55:13,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866520072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:13,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:13,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:13,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109061883] [2023-11-06 21:55:13,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:13,049 INFO L87 Difference]: Start difference. First operand 96347 states and 104816 transitions. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:16,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:16,267 INFO L93 Difference]: Finished difference Result 203773 states and 221750 transitions. [2023-11-06 21:55:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:16,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 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 935 [2023-11-06 21:55:16,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:16,407 INFO L225 Difference]: With dead ends: 203773 [2023-11-06 21:55:16,407 INFO L226 Difference]: Without dead ends: 107853 [2023-11-06 21:55:16,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:16,447 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 195 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:16,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 261 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 21:55:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107853 states. [2023-11-06 21:55:18,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107853 to 103584. [2023-11-06 21:55:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103584 states, 103583 states have (on average 1.0836816852186169) internal successors, (112251), 103583 states have internal predecessors, (112251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:18,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103584 states to 103584 states and 112251 transitions. [2023-11-06 21:55:18,750 INFO L78 Accepts]: Start accepts. Automaton has 103584 states and 112251 transitions. Word has length 935 [2023-11-06 21:55:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:18,751 INFO L495 AbstractCegarLoop]: Abstraction has 103584 states and 112251 transitions. [2023-11-06 21:55:18,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 103584 states and 112251 transitions. [2023-11-06 21:55:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2023-11-06 21:55:18,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:18,806 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:55:18,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 21:55:18,807 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:18,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash -378932464, now seen corresponding path program 1 times [2023-11-06 21:55:18,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:18,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418210825] [2023-11-06 21:55:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:18,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:18,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1453 backedges. 941 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2023-11-06 21:55:19,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:19,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418210825] [2023-11-06 21:55:19,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418210825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:19,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:19,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:55:19,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194540159] [2023-11-06 21:55:19,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:19,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:19,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:19,921 INFO L87 Difference]: Start difference. First operand 103584 states and 112251 transitions. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:23,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:23,101 INFO L93 Difference]: Finished difference Result 228434 states and 247789 transitions. [2023-11-06 21:55:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:55:23,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 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 959 [2023-11-06 21:55:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:23,225 INFO L225 Difference]: With dead ends: 228434 [2023-11-06 21:55:23,225 INFO L226 Difference]: Without dead ends: 125277 [2023-11-06 21:55:23,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:23,262 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 382 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:23,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 272 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 21:55:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125277 states. [2023-11-06 21:55:25,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125277 to 123571. [2023-11-06 21:55:25,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123571 states, 123570 states have (on average 1.0769847050254917) internal successors, (133083), 123570 states have internal predecessors, (133083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123571 states to 123571 states and 133083 transitions. [2023-11-06 21:55:25,887 INFO L78 Accepts]: Start accepts. Automaton has 123571 states and 133083 transitions. Word has length 959 [2023-11-06 21:55:25,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:55:25,887 INFO L495 AbstractCegarLoop]: Abstraction has 123571 states and 133083 transitions. [2023-11-06 21:55:25,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:25,887 INFO L276 IsEmpty]: Start isEmpty. Operand 123571 states and 133083 transitions. [2023-11-06 21:55:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2023-11-06 21:55:25,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:55:25,942 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-06 21:55:25,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 21:55:25,942 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:55:25,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:25,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1327513093, now seen corresponding path program 1 times [2023-11-06 21:55:25,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:55:25,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715209520] [2023-11-06 21:55:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:25,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:55:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1412 backedges. 1183 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-06 21:55:27,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:55:27,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715209520] [2023-11-06 21:55:27,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715209520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:27,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:27,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:55:27,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843169451] [2023-11-06 21:55:27,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:27,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:55:27,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:55:27,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:55:27,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:55:27,401 INFO L87 Difference]: Start difference. First operand 123571 states and 133083 transitions. Second operand has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:55:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:55:32,211 INFO L93 Difference]: Finished difference Result 277377 states and 298256 transitions. [2023-11-06 21:55:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:55:32,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 203.0) internal successors, (812), 4 states have internal predecessors, (812), 0 states have call successors, (0), 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 966 [2023-11-06 21:55:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:55:32,360 INFO L225 Difference]: With dead ends: 277377 [2023-11-06 21:55:32,360 INFO L226 Difference]: Without dead ends: 153808 [2023-11-06 21:55:32,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:55:32,396 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 361 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 2346 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-06 21:55:32,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 235 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2346 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-06 21:55:32,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153808 states.