./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem16_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem16_label22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 61824f34d635413f2c8461e23bcb6dbedaef85995d2443839b8c05bab9ad7ca9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:07,022 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:07,180 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:06:07,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:07,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:07,235 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:07,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:07,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:07,237 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:07,242 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:07,244 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:07,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:07,245 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:07,247 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:07,247 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:07,248 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:07,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:07,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:07,249 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:07,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:07,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:07,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:07,251 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:07,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:07,251 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:07,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:07,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:07,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:07,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:07,254 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:07,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:07,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:07,256 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:07,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:07,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:07,256 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:07,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:07,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:07,257 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:07,257 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_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61824f34d635413f2c8461e23bcb6dbedaef85995d2443839b8c05bab9ad7ca9 [2023-11-19 08:06:07,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:07,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:07,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:07,608 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:07,609 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:07,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/eca-rers2012/Problem16_label22.c [2023-11-19 08:06:10,957 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:11,601 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:11,602 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/sv-benchmarks/c/eca-rers2012/Problem16_label22.c [2023-11-19 08:06:11,627 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/data/1d56e70bf/a205b2319be74455b150f85003dd6bb6/FLAG6dae82751 [2023-11-19 08:06:11,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/data/1d56e70bf/a205b2319be74455b150f85003dd6bb6 [2023-11-19 08:06:11,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:11,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:11,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:11,665 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:11,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:11,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:11" (1/1) ... [2023-11-19 08:06:11,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b6e7153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:11, skipping insertion in model container [2023-11-19 08:06:11,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:11" (1/1) ... [2023-11-19 08:06:11,770 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:11,993 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_dab69a70-de18-4525-a039-c837f00bb440/sv-benchmarks/c/eca-rers2012/Problem16_label22.c[1636,1649] [2023-11-19 08:06:12,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:12,613 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:12,635 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_dab69a70-de18-4525-a039-c837f00bb440/sv-benchmarks/c/eca-rers2012/Problem16_label22.c[1636,1649] [2023-11-19 08:06:13,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:13,054 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:13,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13 WrapperNode [2023-11-19 08:06:13,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:13,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:13,057 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:13,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:13,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,269 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1769 [2023-11-19 08:06:13,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:13,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:13,271 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:13,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:13,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,507 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:13,508 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:13,508 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:13,509 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:13,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (1/1) ... [2023-11-19 08:06:13,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:13,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:13,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:13,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:13,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:13,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:13,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:13,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:13,681 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:13,683 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:16,425 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:16,440 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:16,441 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:06:16,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:16 BoogieIcfgContainer [2023-11-19 08:06:16,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:16,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:16,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:16,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:16,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:11" (1/3) ... [2023-11-19 08:06:16,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41415eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:16, skipping insertion in model container [2023-11-19 08:06:16,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:13" (2/3) ... [2023-11-19 08:06:16,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41415eab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:16, skipping insertion in model container [2023-11-19 08:06:16,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:16" (3/3) ... [2023-11-19 08:06:16,461 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label22.c [2023-11-19 08:06:16,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:16,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:06:16,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:16,564 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5eda7a9e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:16,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:06:16,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:16,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 08:06:16,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:16,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:16,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:16,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:16,588 INFO L85 PathProgramCache]: Analyzing trace with hash -461255479, now seen corresponding path program 1 times [2023-11-19 08:06:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:16,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640856671] [2023-11-19 08:06:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:16,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:16,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:16,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640856671] [2023-11-19 08:06:16,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640856671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:16,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:16,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:16,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134487080] [2023-11-19 08:06:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:16,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:16,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:16,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:16,927 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 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 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:19,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:19,124 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2023-11-19 08:06:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:19,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2023-11-19 08:06:19,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:19,152 INFO L225 Difference]: With dead ends: 1122 [2023-11-19 08:06:19,153 INFO L226 Difference]: Without dead ends: 662 [2023-11-19 08:06:19,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:19,163 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 347 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:19,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 223 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 08:06:19,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-11-19 08:06:19,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2023-11-19 08:06:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.5824508320726172) internal successors, (1046), 661 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1046 transitions. [2023-11-19 08:06:19,254 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1046 transitions. Word has length 13 [2023-11-19 08:06:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:19,254 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1046 transitions. [2023-11-19 08:06:19,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:19,255 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1046 transitions. [2023-11-19 08:06:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 08:06:19,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:19,259 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:06:19,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:06:19,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:19,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1096230195, now seen corresponding path program 1 times [2023-11-19 08:06:19,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:19,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514591381] [2023-11-19 08:06:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:19,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:19,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:19,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514591381] [2023-11-19 08:06:19,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514591381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:19,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:19,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:19,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856627457] [2023-11-19 08:06:19,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:19,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:19,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:19,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:19,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:19,684 INFO L87 Difference]: Start difference. First operand 662 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:21,419 INFO L93 Difference]: Finished difference Result 1651 states and 2539 transitions. [2023-11-19 08:06:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2023-11-19 08:06:21,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:21,434 INFO L225 Difference]: With dead ends: 1651 [2023-11-19 08:06:21,435 INFO L226 Difference]: Without dead ends: 991 [2023-11-19 08:06:21,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:21,439 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 338 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:21,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 77 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-19 08:06:21,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2023-11-19 08:06:21,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2023-11-19 08:06:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3767676767676769) internal successors, (1363), 990 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1363 transitions. [2023-11-19 08:06:21,494 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1363 transitions. Word has length 84 [2023-11-19 08:06:21,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:21,494 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1363 transitions. [2023-11-19 08:06:21,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:21,495 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1363 transitions. [2023-11-19 08:06:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 08:06:21,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:21,499 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:06:21,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:06:21,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:21,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash -38581384, now seen corresponding path program 1 times [2023-11-19 08:06:21,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:21,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887382457] [2023-11-19 08:06:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:21,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:21,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:21,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887382457] [2023-11-19 08:06:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887382457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:21,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:21,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275199472] [2023-11-19 08:06:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:21,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:21,809 INFO L87 Difference]: Start difference. First operand 991 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:23,731 INFO L93 Difference]: Finished difference Result 2967 states and 4084 transitions. [2023-11-19 08:06:23,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:23,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-11-19 08:06:23,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:23,747 INFO L225 Difference]: With dead ends: 2967 [2023-11-19 08:06:23,747 INFO L226 Difference]: Without dead ends: 1978 [2023-11-19 08:06:23,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:23,753 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 289 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:23,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 209 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 08:06:23,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2023-11-19 08:06:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2023-11-19 08:06:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.2468386444107233) internal successors, (2465), 1977 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2465 transitions. [2023-11-19 08:06:23,814 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2465 transitions. Word has length 85 [2023-11-19 08:06:23,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:23,815 INFO L495 AbstractCegarLoop]: Abstraction has 1978 states and 2465 transitions. [2023-11-19 08:06:23,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:23,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2465 transitions. [2023-11-19 08:06:23,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 08:06:23,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:23,820 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:06:23,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:06:23,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:23,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1536310875, now seen corresponding path program 1 times [2023-11-19 08:06:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:23,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005889570] [2023-11-19 08:06:23,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:23,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:23,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005889570] [2023-11-19 08:06:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005889570] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:23,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479232859] [2023-11-19 08:06:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:23,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:23,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:23,963 INFO L87 Difference]: Start difference. First operand 1978 states and 2465 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:25,824 INFO L93 Difference]: Finished difference Result 4612 states and 5852 transitions. [2023-11-19 08:06:25,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:25,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2023-11-19 08:06:25,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:25,844 INFO L225 Difference]: With dead ends: 4612 [2023-11-19 08:06:25,845 INFO L226 Difference]: Without dead ends: 2636 [2023-11-19 08:06:25,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:25,860 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 371 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:25,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 539 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 08:06:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2023-11-19 08:06:25,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2636. [2023-11-19 08:06:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2636 states, 2635 states have (on average 1.21707779886148) internal successors, (3207), 2635 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2636 states to 2636 states and 3207 transitions. [2023-11-19 08:06:25,941 INFO L78 Accepts]: Start accepts. Automaton has 2636 states and 3207 transitions. Word has length 100 [2023-11-19 08:06:25,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:25,945 INFO L495 AbstractCegarLoop]: Abstraction has 2636 states and 3207 transitions. [2023-11-19 08:06:25,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2636 states and 3207 transitions. [2023-11-19 08:06:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-19 08:06:25,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:25,964 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:25,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:06:25,965 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:25,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:25,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1824283015, now seen corresponding path program 1 times [2023-11-19 08:06:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:25,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361560782] [2023-11-19 08:06:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:25,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-19 08:06:26,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361560782] [2023-11-19 08:06:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361560782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:26,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:26,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769196668] [2023-11-19 08:06:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:26,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:26,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:26,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:26,436 INFO L87 Difference]: Start difference. First operand 2636 states and 3207 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:28,308 INFO L93 Difference]: Finished difference Result 6586 states and 8078 transitions. [2023-11-19 08:06:28,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:28,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 285 [2023-11-19 08:06:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:28,335 INFO L225 Difference]: With dead ends: 6586 [2023-11-19 08:06:28,336 INFO L226 Difference]: Without dead ends: 3294 [2023-11-19 08:06:28,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:28,342 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:28,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 156 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 08:06:28,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2023-11-19 08:06:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3294. [2023-11-19 08:06:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 3293 states have (on average 1.0652900091102337) internal successors, (3508), 3293 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 3508 transitions. [2023-11-19 08:06:28,444 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 3508 transitions. Word has length 285 [2023-11-19 08:06:28,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:28,445 INFO L495 AbstractCegarLoop]: Abstraction has 3294 states and 3508 transitions. [2023-11-19 08:06:28,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 3508 transitions. [2023-11-19 08:06:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-11-19 08:06:28,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:28,458 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2023-11-19 08:06:28,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:06:28,459 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:28,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2049321621, now seen corresponding path program 1 times [2023-11-19 08:06:28,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:28,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545216906] [2023-11-19 08:06:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:28,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2023-11-19 08:06:29,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:29,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545216906] [2023-11-19 08:06:29,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545216906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:29,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:29,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:29,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817006134] [2023-11-19 08:06:29,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:29,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:29,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:29,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:29,239 INFO L87 Difference]: Start difference. First operand 3294 states and 3508 transitions. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:30,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:30,730 INFO L93 Difference]: Finished difference Result 9547 states and 10184 transitions. [2023-11-19 08:06:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:30,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 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 451 [2023-11-19 08:06:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:30,766 INFO L225 Difference]: With dead ends: 9547 [2023-11-19 08:06:30,766 INFO L226 Difference]: Without dead ends: 6255 [2023-11-19 08:06:30,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:30,772 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 238 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:30,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 72 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 08:06:30,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2023-11-19 08:06:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 5926. [2023-11-19 08:06:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5926 states, 5925 states have (on average 1.0616033755274261) internal successors, (6290), 5925 states have internal predecessors, (6290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:30,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5926 states to 5926 states and 6290 transitions. [2023-11-19 08:06:30,986 INFO L78 Accepts]: Start accepts. Automaton has 5926 states and 6290 transitions. Word has length 451 [2023-11-19 08:06:30,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:30,987 INFO L495 AbstractCegarLoop]: Abstraction has 5926 states and 6290 transitions. [2023-11-19 08:06:30,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 2 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand 5926 states and 6290 transitions. [2023-11-19 08:06:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2023-11-19 08:06:31,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:31,012 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:31,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:06:31,013 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:31,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:31,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1390635834, now seen corresponding path program 1 times [2023-11-19 08:06:31,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:31,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903420267] [2023-11-19 08:06:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:31,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-11-19 08:06:32,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:32,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903420267] [2023-11-19 08:06:32,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903420267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:32,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:32,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224943309] [2023-11-19 08:06:32,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:32,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:32,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:32,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:32,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:32,306 INFO L87 Difference]: Start difference. First operand 5926 states and 6290 transitions. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:33,693 INFO L93 Difference]: Finished difference Result 11537 states and 12262 transitions. [2023-11-19 08:06:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:33,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 554 [2023-11-19 08:06:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:33,727 INFO L225 Difference]: With dead ends: 11537 [2023-11-19 08:06:33,727 INFO L226 Difference]: Without dead ends: 5942 [2023-11-19 08:06:33,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:33,736 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 173 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:33,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 170 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 08:06:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2023-11-19 08:06:33,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5926. [2023-11-19 08:06:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5926 states, 5925 states have (on average 1.061434599156118) internal successors, (6289), 5925 states have internal predecessors, (6289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5926 states to 5926 states and 6289 transitions. [2023-11-19 08:06:33,939 INFO L78 Accepts]: Start accepts. Automaton has 5926 states and 6289 transitions. Word has length 554 [2023-11-19 08:06:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:33,940 INFO L495 AbstractCegarLoop]: Abstraction has 5926 states and 6289 transitions. [2023-11-19 08:06:33,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5926 states and 6289 transitions. [2023-11-19 08:06:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2023-11-19 08:06:33,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:33,996 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2023-11-19 08:06:33,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:06:33,997 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:33,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1945223882, now seen corresponding path program 1 times [2023-11-19 08:06:33,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:33,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109851783] [2023-11-19 08:06:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:33,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1031 backedges. 806 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-19 08:06:34,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:34,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109851783] [2023-11-19 08:06:34,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109851783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:34,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:34,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:34,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756217165] [2023-11-19 08:06:34,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:34,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:34,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:34,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:34,942 INFO L87 Difference]: Start difference. First operand 5926 states and 6289 transitions. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:36,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:36,177 INFO L93 Difference]: Finished difference Result 14482 states and 15474 transitions. [2023-11-19 08:06:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:36,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 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 669 [2023-11-19 08:06:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:36,222 INFO L225 Difference]: With dead ends: 14482 [2023-11-19 08:06:36,222 INFO L226 Difference]: Without dead ends: 8887 [2023-11-19 08:06:36,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:36,228 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 219 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:36,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 426 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 08:06:36,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8887 states. [2023-11-19 08:06:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8887 to 8558. [2023-11-19 08:06:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8557 states have (on average 1.048381442094192) internal successors, (8971), 8557 states have internal predecessors, (8971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 8971 transitions. [2023-11-19 08:06:36,444 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 8971 transitions. Word has length 669 [2023-11-19 08:06:36,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:36,448 INFO L495 AbstractCegarLoop]: Abstraction has 8558 states and 8971 transitions. [2023-11-19 08:06:36,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:36,449 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 8971 transitions. [2023-11-19 08:06:36,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-19 08:06:36,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:36,487 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:36,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:06:36,488 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:36,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:36,489 INFO L85 PathProgramCache]: Analyzing trace with hash 100139087, now seen corresponding path program 1 times [2023-11-19 08:06:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:36,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498031042] [2023-11-19 08:06:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 911 backedges. 783 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-19 08:06:37,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:37,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498031042] [2023-11-19 08:06:37,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498031042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:37,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:37,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:37,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692832298] [2023-11-19 08:06:37,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:37,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:37,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:37,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:37,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:37,432 INFO L87 Difference]: Start difference. First operand 8558 states and 8971 transitions. Second operand has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:38,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:38,675 INFO L93 Difference]: Finished difference Result 19417 states and 20484 transitions. [2023-11-19 08:06:38,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:38,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 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 771 [2023-11-19 08:06:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:38,713 INFO L225 Difference]: With dead ends: 19417 [2023-11-19 08:06:38,713 INFO L226 Difference]: Without dead ends: 11190 [2023-11-19 08:06:38,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:38,785 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 175 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:38,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 414 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 08:06:38,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2023-11-19 08:06:38,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 10532. [2023-11-19 08:06:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10532 states, 10531 states have (on average 1.0454847592821195) internal successors, (11010), 10531 states have internal predecessors, (11010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10532 states to 10532 states and 11010 transitions. [2023-11-19 08:06:39,028 INFO L78 Accepts]: Start accepts. Automaton has 10532 states and 11010 transitions. Word has length 771 [2023-11-19 08:06:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:39,031 INFO L495 AbstractCegarLoop]: Abstraction has 10532 states and 11010 transitions. [2023-11-19 08:06:39,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 10532 states and 11010 transitions. [2023-11-19 08:06:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2023-11-19 08:06:39,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:39,064 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:39,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:06:39,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:39,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:39,065 INFO L85 PathProgramCache]: Analyzing trace with hash 678900935, now seen corresponding path program 1 times [2023-11-19 08:06:39,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:39,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720053584] [2023-11-19 08:06:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:39,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1873 backedges. 1374 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2023-11-19 08:06:40,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:40,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720053584] [2023-11-19 08:06:40,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720053584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:40,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:40,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394416995] [2023-11-19 08:06:40,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:40,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:40,313 INFO L87 Difference]: Start difference. First operand 10532 states and 11010 transitions. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:41,553 INFO L93 Difference]: Finished difference Result 23694 states and 24916 transitions. [2023-11-19 08:06:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:41,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 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 1029 [2023-11-19 08:06:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:41,578 INFO L225 Difference]: With dead ends: 23694 [2023-11-19 08:06:41,578 INFO L226 Difference]: Without dead ends: 13493 [2023-11-19 08:06:41,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:41,591 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:41,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 433 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 08:06:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13493 states. [2023-11-19 08:06:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13493 to 12835. [2023-11-19 08:06:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0409069658719028) internal successors, (13359), 12834 states have internal predecessors, (13359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13359 transitions. [2023-11-19 08:06:41,781 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13359 transitions. Word has length 1029 [2023-11-19 08:06:41,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:41,783 INFO L495 AbstractCegarLoop]: Abstraction has 12835 states and 13359 transitions. [2023-11-19 08:06:41,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:41,783 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13359 transitions. [2023-11-19 08:06:41,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2023-11-19 08:06:41,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:41,809 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:41,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:06:41,810 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:41,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2062153128, now seen corresponding path program 1 times [2023-11-19 08:06:41,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:41,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095723814] [2023-11-19 08:06:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1878 backedges. 733 proven. 774 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2023-11-19 08:06:44,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:44,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095723814] [2023-11-19 08:06:44,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095723814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:44,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548455759] [2023-11-19 08:06:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:44,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:44,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:44,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:44,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:06:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:44,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:06:44,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1878 backedges. 1090 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2023-11-19 08:06:45,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548455759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:45,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:45,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-19 08:06:45,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788973786] [2023-11-19 08:06:45,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:45,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:45,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:45,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:45,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:45,401 INFO L87 Difference]: Start difference. First operand 12835 states and 13359 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:46,412 INFO L93 Difference]: Finished difference Result 25339 states and 26385 transitions. [2023-11-19 08:06:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:46,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 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 1030 [2023-11-19 08:06:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:46,437 INFO L225 Difference]: With dead ends: 25339 [2023-11-19 08:06:46,437 INFO L226 Difference]: Without dead ends: 12835 [2023-11-19 08:06:46,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:46,448 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 117 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:46,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 377 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 08:06:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12835 states. [2023-11-19 08:06:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12835 to 12835. [2023-11-19 08:06:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0363877201184355) internal successors, (13301), 12834 states have internal predecessors, (13301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13301 transitions. [2023-11-19 08:06:46,657 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13301 transitions. Word has length 1030 [2023-11-19 08:06:46,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:46,659 INFO L495 AbstractCegarLoop]: Abstraction has 12835 states and 13301 transitions. [2023-11-19 08:06:46,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13301 transitions. [2023-11-19 08:06:46,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2023-11-19 08:06:46,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:46,690 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:46,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:46,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dab69a70-de18-4525-a039-c837f00bb440/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:06:46,920 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:46,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:46,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1046866302, now seen corresponding path program 1 times [2023-11-19 08:06:46,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:46,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915302938] [2023-11-19 08:06:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:46,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2023-11-19 08:06:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:48,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915302938] [2023-11-19 08:06:48,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915302938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:48,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:48,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:48,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584699470] [2023-11-19 08:06:48,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:48,250 INFO L87 Difference]: Start difference. First operand 12835 states and 13301 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:49,343 INFO L93 Difference]: Finished difference Result 27642 states and 28662 transitions. [2023-11-19 08:06:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:49,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 1201 [2023-11-19 08:06:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:49,369 INFO L225 Difference]: With dead ends: 27642 [2023-11-19 08:06:49,369 INFO L226 Difference]: Without dead ends: 14151 [2023-11-19 08:06:49,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:49,381 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 172 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:49,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 410 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:06:49,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14151 states. [2023-11-19 08:06:49,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14151 to 11848. [2023-11-19 08:06:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11848 states, 11847 states have (on average 1.0297121634168989) internal successors, (12199), 11847 states have internal predecessors, (12199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:49,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 12199 transitions. [2023-11-19 08:06:49,540 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 12199 transitions. Word has length 1201 [2023-11-19 08:06:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:49,542 INFO L495 AbstractCegarLoop]: Abstraction has 11848 states and 12199 transitions. [2023-11-19 08:06:49,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 12199 transitions. [2023-11-19 08:06:49,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2023-11-19 08:06:49,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:49,659 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:49,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:06:49,660 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:49,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:49,661 INFO L85 PathProgramCache]: Analyzing trace with hash -551765767, now seen corresponding path program 1 times [2023-11-19 08:06:49,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:49,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047832157] [2023-11-19 08:06:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:49,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2699 backedges. 1943 proven. 0 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2023-11-19 08:06:51,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047832157] [2023-11-19 08:06:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047832157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:51,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:51,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:51,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382600264] [2023-11-19 08:06:51,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:51,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:06:51,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:51,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:51,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:51,008 INFO L87 Difference]: Start difference. First operand 11848 states and 12199 transitions. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:06:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:52,038 INFO L93 Difference]: Finished difference Result 23694 states and 24395 transitions. [2023-11-19 08:06:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:52,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 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 1277 [2023-11-19 08:06:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted.